AC Systems, Inc. Automatic Controls Equipment Systems, Inc. Automation Solutions Group Behrmann Co. Blackmore & Glunt, Inc. C & C Group, Inc. Cambridge Engineering, Inc. Cape Winair Co. Comfort Sales Agency, Inc. Commair, Inc. Control Products, Inc. Controlco Inc. Crescent Parts & Equipment Co., Inc. Custom Product Solutions, Inc. Debco Equipment Co., Inc. Dynamic Controls Inc. Echelmeier Company Electro Motion Refrigeration Electronic Support Systems Enfab, Inc. Engineered Air Engineered Thermal Systems, Inc. Friemel-Love Co. Gaus-Scott Co. Heartland Mechanical Solutions Hughes Machinery Company HVAC Solutions, Inc. Johnson Controls, Inc. Koch Air, LLC - Bryant Division Koch Air, LLC - Carrier Division Koch Air, LLC-Parts & Supplies Division

Table of Contents

Advertiser Section Product Section Manufacturer Section

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Kuhlmann Supply Co Inc Langendorf Supply Co., Inc. Magary Sales, Inc. Mead O'Brien, Inc. Mechanical Supply Co., Inc. Mid-Valley Radiants & Industrials, Inc. Midwest Machinery Co. Nation-Wide Refrigeration, Inc. Pero Sales, Inc. Quality Water Treatment, Inc. RamAir, Inc. Rhodes Equipment Co. Rollie Johnson, Inc. (RJI) St. Louis Boiler Supply Co. H.C. Sharp Co. Siemens Building Technologies State Mechanical Services, Inc E.J. Taff Sales Co., Inc. TayCon Building Technologies Thermal Mechanics, Inc. Trabue Industrial Systems Trane R.R. Waites Co. Inc.

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AC Systems, Inc.AC Systems, Inc. Larry Miller, Vincent Stanec, Jr., Vincent F. Stanec, III, Kurt Trostel, David Taylor, Gary Nedrig, Greg Kuehnel, Kiersten Dennison, Jo McClintock, Ryan Fletcher, Liz Long, Mark Sacco 11724 Adie Rd, Maryland Heights, Missouri 63043 PHONE 314-569-1000 FAX 314-569-0532 EMAIL acsinfo@acsystemsinc.net WEB www.acsystemsinc.net JEFFERSON CITY-OFFICE Jeff Volmert 1200 Somerset Lane Jefferson City, Missouri 65101 PHONE 573-638-0474 FAX 573-638-0475 MANUFACTURER PRODUCT DESCRIPTION AAON Inc. Cooling & Heating Coils, Rooftop Air Conditioning (2- 230 Tons) Air Handlers Condensing Units & Chillers Acutherm, Inc. Variable Volume Diffusers Aero Tech Mfg Co. Radiant Ceiling Panels Hydronic Air Distribution Concepts, Inc Fabric Air Diffuser Systems AJ Manufacturing Stainless Steel Grilles American Louver Louvers, Egg Crate Louver Anemostat Grilles, diffusers, Nozzles, Security Grilles Bostick Construction Sealants C L Ward Duct Connectors & Corner, Spiral Access Doors Carnes Humidifiers; Fogging; Steam-Steam Grilles, Registers, Diffusers, Fan Term VAV Boxes, Humidifiers Fans, Blowers & Ventilators Commercial Acoustics Sound Attenuators, Acoustical Panels Compu-Aire, Inc. Computer Room Air Conditioners & Chillers Dadanco Active Chilled Beams Enviro-Tec Fan Coils, Air Handlers & VAV Boxes & Fan Terminals Flexmaster Flex Duct, Fittings, Access Doors Florida Heat Pump Water Source Heat Pumps, (Boiler/Tower & Geothermal) Water Source Chiller Hardcast Adhesives, Sealant & Mastics, Tapes Hastings Industries Unit Heaters, Duct Furnaces, Heating Systems, Direct Fired, Electric Heating Systems, Make-up, Air Rotation Units J.L. Industries Panel & Fire Doors Koch Filters Filters Lexton Fans Multi-Speed Bathroom Exhaust Fans Mason Industries Vibration Control, Flex Connectors, Stock: Seismic Restraints, Inertia Bases, Springs & Pads Mitsubishi Electric Variable Refrigerant Flow Systems, City Multi Simultaneous Heating & Cooling Ductless Splits Permatite Tapes & Duct Sealant Polymer Adhesive Duct Sealer, Adhesives & Tapes Raymon Donco Grilles & Diffusers Raywall Electric Baseboard, Unit and Duct Heaters, Radiant Panels Roberts-Gordon Co-Ray Vac Gas Infra-Red Heaters, Vented & Unvented Sigma, Inc. Electric Convectors, Finned Tube Radiation, Baseboard, Cabinet Unit Heaters Soudal Silicon Sealants Tyton Hellermann Duct Ties United Enertech Louvers, Airfoil Blades & Remote Dampers Wattmaster Controls, Inc. VVT-Control Systems Yaskawa Variable Frequency Drives

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Automatic Controls Equipment Systems, Inc.Automatic Controls Equipment Systems, Inc. Robert A. Vogt, Sr., President; Robert A. Vogt, Jr., Vice-President; Justin M. Vogt 11088 Gravois Ind Ct, St Louis MO 63128 PHONE 314-722-2727 FAX 314-722-2728 EMAIL sales@automaticcontrols.net WEB www.automaticcontrols.net MANUFACTURER PRODUCT DESCRIPTION Automated Logic Corp Building Automation Systems Controls, DDC Direct Digital Controls, Energy Management Systems, Facility Energy Manufacturing Systems Temperature Controls Lumisys Lighting Control System Automation Solutions GroupAutomation Solutions Group Brian Schuhmacher, Vice President, Tom Flaker, Mike Mertens, Chris Ruth, Danny Salomon, David Jerauld, Mark Italiano, Andrea Kramer, Ken Ellis, Andy Anderson 1055 Cassens Industrial Ct., Fenton, Missouri 63026 PHONE 636-680-2200 FAX 636-680-2203 EMAIL asg@automationsolutionsgroup.com WEB www.automationsolutionsgroup.com MANUFACTURER PRODUCT DESCRIPTION American Auto-Matrix Building Management Systems, Energy Management Systems, Facility Energy Management Systems, Fume Hood Controls, Temperature Humidity Controls, Building Monitoring Honeywell Building Automation, Security & Card Access Reliable Controls Building Management Systems, Energy Management Systems, Facility Energy Management Systems, Fume Hood Controls, Temperature Humidity Controls, Building Monitoring Toshiba Variable Frequency Drives Veris Energy Meters Yaskawa Variable Frequency Drives Behrmann Co.Behrmann Co. Tom Behrmann, Chuck Beasley, Doug Davis, Burt Estabrooks, Ed Foster, Jeanette Kille, Patricia Knott, Tom Borawski, Bob Evans,, Barb Rapp, Gordon Roberts, Jennifer Roland, Craig Sands, Eileen Snelson, Bill Spirk, Bob Stagg, Walt Steiner, Dave Westbrook, Shane Wallace, Marty Wolfe, Mark Zollner, Brian McCauley 4173 Hoffmeister Avenue, St. Louis, Missouri 63125-2296 PHONE 314-631-4400 FAX 314-638-5609 or 877-638-5609 TOLL FREE #800-500-8870 EMAIL behrco@behrco.com WEB www.behrco.com or www.behrmanncompany.com MANUFACTURER PRODUCT DESCRIPTION Armstrong International Pressure & Temperature Regulating Valves, Steam Traps, Float Valves, Ejectors, Pressure Powered Condensate Pumps Burnham Commercial Scotch Marine & Firebox Boilers, Deaerators, Blow down Separators & Blow off Heat Recovery Systems Burnham Hydronics Cast Iron Boilers, Hot Water & Steam, Gas, Oil, Electric, Radiation Cain Industries Economizers for Boiler Stacks Coilmaster, Inc. Heating-Cooling Coils Conbraco Industries, Inc. Relief Valves - Air, Steam, Water Exhausto Variable Speed Chimney Draft Fans & Combustion Air Fans Fulton Boiler Works Pulse Combustion Hot Water & Steam Boilers, Vertical Tubeless Boilers, Thermal Fluid Heaters Haydon Hot Water Baseboard Radiation Heat-Fab AL29-4C Stainless Steel Gas Vent Systems HVAC Solution HVAC Selection & Design Software Hydrolevel Co. Safeguard Probe-Type Boiler Water Safety Controls

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Hydronic Monitor Hydronic Indicator Systems Keckley Strainers for Piping Systems L.E.S. Inc. Scotch Box Compact Firebox Boilers, Vertical Firetube Boilers & Multiple Boiler Systems Lochinvar Corp. Copper Finned Tube Boilers Macon Balancing Precision Globe-Type Hydronic Flow Measurement and Balancing Valves Macon Control Corp. Non-Electric/Thermostatic Control Valves, Heating & Cooling Metalbestos Positive Pressure Breeching & Stacks for Boilers, Engine Generators, Grease Duct Power Flame Forced Draft Burners, low NOx, Conversion Burners Precision Boiler Electric Hot Water & Steam Boilers, Deaerators, Blow down Separators, Exhaust heads, Overflow Traps RECO, USA Forced Draft Water Heaters, Indirect Water Heaters REYMSA Cooling Towers Rite Engineering Inclined Water Tube Hot Water & Steam Boilers Selkirk Metalbestos Positive Pressure Breeching & Stacks for Boilers, Engine Generators, Grease Duct Skidmore Condensate, Vacuum, Boiler Feed & Low NPSH Pumps Sondex, Inc. Plate Heat Exchangers TACO, Inc. Circulators, Pumps, Air/Dirt Separators, Heat Exchangers, Hydronic Specialties, Bladder Expansion Tanks Tigerflow Packaged Pump Systems Turbonics, Inc. Kick space Heaters Twin City Hose Flexible Pump Connectors Weiss Instruments Gauges & Thermometers Blackmore & Glunt, Inc.Blackmore & Glunt, Inc. Cy Blackmore, Scott Blackmore, Dave Creasy, John Glunt, Robert Glunt, Mike Haywood, Greg Hoekstra, Ed Masterson, Angie Neal, John Schmidt, Bobbie Seibold, Bill Stobbs, Rich Waite 12 Kimler Drive, Maryland Heights, Missouri 63043 PHONE 314-878-4313 FAX 314-878-6029 EMAIL salesstl@b-g.com WEB www.b-g.com MANUFACTURER PRODUCT DESCRIPTION AERCO Packaged Water-to-Water & Steam-to-Water Heaters, Indirect Fired Steam Generators, High Efficiency Modular Gas Fired Boilers & Water Heaters Bell & Gossett Hydronic Specialties, Centrifugal Pumps, Heat Exchangers, Variable Speed Pumping Systems, Packaged Pumping Systems, Engineered Plumbing Products, Vertical Turbines, Submersible Pumps Bryan Boilers Boiler Feed, Deaerators, Blow Down Separators Cemline Lined Tanks, Packaged Electric & Steam Hot Water Heaters Danfoss, Inc. Self Contained Radiator Valves Domestic Pump Boiler Feed Units, Condensate Units, Clinical Vacuum Units, Control Panels Flow Conditioning Hydronic Indicator Systems, Double Suction Diffusers, Packaged Pumping Systems, Flange Adapters Flow Control Industries Pressure Independent 2-Way Modulating Control Valves, Electric

or Pneumatic Actuators, Flow and BTU Measuring Heat-Fab Single or Double Wall AL-29-4C Stainless Steel Gas Vent for Condensing Boiler Applications Hoffman Specialty Steam Specialties; Valves, Traps, Strainers, Pumps, Temperature Regulators Kadant-Johnson Corporation Pressure Powered Condensate Pumps, Packages, Air or Steam Motive, Electric or Pneumatic Control

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Marsh Instruments Co. Gauges, Thermometers, Needle Valves McDonnell & Miller Boiler Controls, Pump Controls, Flow Switches (Air, Water) Metraflex Metraloop Expansion Loops, Pipe Penetration Seals Peterson Equipment Company Pressure & Temperature Taps Raypak Atmospheric & High Efficiency Sealed Combustion Copper Tube Boilers, Water Heaters, Variable Speed Induced Draft Fans Watts Radiant Radiant Floor Heat & Snow Melting, Plumbing, Electric Resistance Floor Warming Wessels Custom Tanks for all Services, Diaphragm Tanks & Glass Lined Storage Tanks Winters Instruments Pressure Gauges and Thermometers C & C Group, Inc.C & C Group, Inc. Michael Wade, Mike Johnson, Terry Presley 4058 Wedgeway Court, Earth City, Missouri 63045 PHONE 314-291-8800 FAX 314-344-3112 TOLL FREE 888-524-4307 EMAIL mwade@c-cgroup.com WEB www.c-cgroup.com MANUFACTURER PRODUCT DESCRIPTION Barber-Coleman Belimo Erie Square D TAC/Invensys Schneider Electric Building Management Systems, Energy Management Systems, Design/Build, Commissioning, Security, CCTV, Fire Alarm Veris Cambridge Engineering, Inc.Cambridge Engineering, Inc. John Kramer, Jr.,President, Ken Williams, Director of Marketing, Steve Shaffer, Sales Manager 760 Long Road Crossing Dr., P.O. Box 1010, Chesterfield, Missouri 63005 PHONE 636-532-2233 FAX 636-530-6133 TOLL FREE 800-899-1989 EMAIL info@cambridge-eng.com WEB www.cambridge-eng.com MANUFACTURER PRODUCT DESCRIPTION Cambridge Engineering Inc Industrial Space Heating & Ventilation Systems, Direct Gas- Fired Space Heaters, Make-Up Air Heaters, Process Air Heaters & Air Curtain Door Heaters for Warehouses, Distribution Centers, Industrial Facilities, Factories, Commercial Kitchens & Auto Service Facilities. Cape Winair Co.Cape Winair Co. Mike Smith, Darrell Hess, David Blechle, Jeremy Bollinger 500 Commercial Street, Cape Girardeau, Missouri 63703 PHONE 573-335-5521 FAX 573-335-5537 TOLL FREE 800-777-4797 MANUFACTURER PRODUCT DESCRIPTION ADP Coils & Air Handlers ALCO Controls Driers & Expansion Valves American Air Filter Air Filters Aprilaire/Research Products Humidifiers Armstrong Air Commercial Package Units to 25 ton Armstrong Air Residential Heating & Air Conditioning Duro Dyne Zone Systems & Duct Accessories Florida Heat Pump Water Source Heat Pumps

4

GE PTAC, PTHP Hart & Cooley Grills & Registers Honeywell/White Rodgers Residential & Commercial Controls ICM Controls Temperature Controls Johnson Controls Refrigeration Controls Kinco Adhesive Duct Liner Adhesive Krack Commercial Refrigeration Equipment LG PTAC, PTHP Magic Aire Fan Coil Units Paragon Controls Time Clocks Raywall Electric & Infrared Gas heaters Reznor Unit heaters, Make-Up Air Systems Snap-Rite Furnace Pipe & Fittings Tecumseh Products Air Conditioning & Refrigeration Compressors Vapco - Garman Products Coil Cleaners & Products WITT Commercial Refrigeration Equipment Comfort Sales Agency, Inc.Comfort Sales Agency, Inc. Kevin Hay, Bill Inglis, Mark Nelson, Bob Luce, David Kaibel, Roger Perry, Rhonda Schwalb, Mike Whited 7103 Marine Rd - P.O. Box 483, Edwardsville, Illinois 62025 PHONE 618-656-1655 FAX 618-692-8066 TOLL FREE EMAIL info@comfortsales.com WEB www.comfortsales.com MANUFACTURER PRODUCT DESCRIPTION Beacon Morris Unit Heaters, Gas & Hydronic, Duct Furnaces, Cabinet Unit Heaters, Convectors, Commerical Wall Radiation Columbia Boiler Co. Steam & Hot Water Boilers - Up to 250 H.P., Low or High Pressure Heat Transfer Products, Inc. Munchkin High Efficiency Modulating Boilers, High Efficiency Water Heaters, Everlast Electric Water Heaters, Superstorage Indirect Water Heaters, Solar Heating Hydrotherm Cast Iron Boilers, Hot Water & Steam, Radiation, Modular Boilers, Cast Iron & Condensing Modular Boiler Plants High Efficient Water Boilers Up to 2000 MBH Mr PEX Systems Radiant Floor Heat & Snow Melting Systems Niles Steel Tank ASME Water Storage Tanks RBI Copper Boilers, Water Heaters & Swimming Pool Heaters Reimers Electra Steam Electric Boilers, Hot Water & Steam, Low or High Pressure, Up to 700 KW Smith Cast Iron Boiler Co. Cast Iron Boilers up to 400HP Spirotherm High Efficiency Micro bubble Air Separators, Dirt Separators, High Velocity Air/Dirt Separators, Air Vents for Hydronic Systems Sterling, Inc. Steam Traps, Condensate & Boiler Feed, Descaling For Boilers, Condensers, Heat Exchangers, & Tanks, Condensate & Boiler Feed Pumps Superior Boiler Works Scotch Marine & Vertical Tubeless Boilers 10 HP-2200 HP, Boiler Feed Systems, Deaerators Superior Radiant Products Infra-Red Heaters, Gas Tekmar Control Systems Mixing Valves & Boiler Staging Controls, Snow Melting & Radiant Floor Heating Controls Reset, Boiler Protection Radiant & Snow Melting Controls Webster Engineering Forced Draft Gas & Oil Burner Commercial & Industrial

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Commair, Inc.Commair, Inc. Brian Ingenthron, Karen Lueck 315 N. Laclede Station Rd., Webster Groves, Missouri 63119 PHONE 314-963-0057 FAX 314-963-0130 EMAIL BRIAN---briani99@sbcglobal.net- KAREN - karenl21@sbcglobal.net WEB www.commair-inc.com MANUFACTURER PRODUCT DESCRIPTION Airedale Cassette Type Ductless Split System Air Conditioners, Heat Pumps, with Hot Water or Electric Heat Options

Vertical Self Contained Classroom Unit Ventilators, Heat Pumps, Water Source Heat Pumps & Ground Source Heat Pumps Ammark Thermostatic Radiator Valves Brasch Mfg. Co. Electric Duct Heaters, Unit Heaters, Baseboard Heaters, Electric Make-up Air Units & Architectural Draft Barriers, Detectors, Carbon Monoxide, Dixode, Refrigerant, Ammonia, Leak, Toxic Detectors Change'Air Vertical Self Contained Classroom Unit Ventilators, Gas, Electric or Hydronic Heat, DX or Chilled Water Cooling, Automatic Ventilation, Water Source Heat Pumps Honeywell, Inc. Commercial Air Cleaners, Portable & Ceiling Mounted HEPA Filtration Systems Renewaire Full Enthalpy Energy Recovery Ventilators, Commercial, Industrial & Residential Samsung Ductless Split System, Air Conditioners & Heat Pumps Sterling HVAC Gas Heating Equipment, Unit Heaters, Make Up Air Units, Duct Heaters, Infrared Heaters Sterling Radiator Co. Hydronic Heating Equipment, Finned Tube Radiation, Unit Heaters, Convectors, Cabinet Unit Heaters, Radiant Ceiling Panels Suburban Manufacturing Co. Packaged Terminal Air Conditioner with Gas Heat Vibration Eliminator Co. Vibration Control Products, Seismic Isolation, Inertia Bases, Hangers, Springs & Pads

Control Products, Inc.Control Products, Inc. Gary Kirk, Eric Sengheiser, Tim Turner, Fran Hoard, Robert VanZanten, Mark Westmoreland, Bill Oberbeck, Jr., Larry Fisk, Kayt Acton 1668 Headland Drive, Fenton, Missouri 63026 PHONE 636-343-9501 FAX 636-343-9509 TOLL FREE 800-583-6896 EMAIL mail@cpinc.com WEB www.cpinc.com MANUFACTURER PRODUCT DESCRIPTION Advance Valve, Inc. Steel Exhaust Heads ARI Control Valves, 2-Way and 3-Way, Pneumatic & Electric Actuators, Safety Relief Valves Durabla Mfg. Co. Check Valves & Vacuum Breakers Ful-Flo Specialities Liquid By-Pass & Relief Valves Graham Manufacturing, Inc. Plate & Frame Heat Exchangers, Brazed Plate Heat Exchangers, Domestic Water Heaters, Clean Steam Generators Leser Safety Relief Valves Marsh-Bellofram, Inc. Air Regulators, Relays, and Boosters, I/P Transducers MEPCO (Dunham-Bush) Steam Traps and Specialties, Centrifugal Pumps, Vacuum & Condensate Pump Packages Nicholson Steam Trap Steam Traps, Pressure-Operated Condensate Pumps Parker Boiler Co. Steel Water Tube Boilers, Hot Water & Steam, Thermal Liquid,

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Indirect-Fired Water Heaters Precision Boilers LLC Electric Boilers and Water Heaters, Flash Tanks & Storage Tanks Russell Pump Centrifugal Pumps, Condensate Pump Packages. Spence Engineering, Inc. Pressure & Temperature Regulators, Control Valves, Safety Relief Valves SSI Strainers: -All Types, and Materials, Check Valves, Automatic Backwash Strainers. Trerice Pressure Gauges, Thermometers, Temperature Regulators Controlco Inc.Controlco Inc. Tom Kiser, Mike Byrne, Joe Wheeler, Randy Hendershot, Dave Bobbitt 2518 Lemay Ferry Rd, Suite 347, St. Louis, MO 63125 PHONE 314-631-2282 FAX 314-631-2287 WEB www.controlcocontrols.com MANUFACTURER PRODUCT DESCRIPTION Barber-Coleman Actuators, Temperature Controls, Valves Belimo Actuators & Valves HCI Piping Packages & Valves Honeywell Actuators, Temperature Controls, Valves Invensys Actuators, Temperature Control Valves Johnson Controls Actuators, temperature controls, Valves, installed Control Systems Macurco Gas Detectors Mamac Sensors Siemens Actuators, Temperature Controls, Valves TAC Actuators, Temperature Controls, Valves TCS-Basys Temperature Controls Veris Sensors Crescent Parts & Equipment Co., Inc.Crescent Parts & Equipment Co., Inc. MAIN OFFICE/DIST CENTER George Giudici, Guy Giudici, Ken Perotta, Dave Bourisaw, Paul Diraimondo, Steve Gorla, Steve Sagehorn, Paul Wanstreet, Greg O'Bryan, Phil Gaines, Marty Moehrle, Jeff Gratzer, Sam Mertz, Bob Thom (15 LOCATIONS SERVING YOU IN MISSOURI & ILLINOIS) *See our Website Address Listed Below 5121 Manchester Road, St. Louis, Missouri 63110 PHONE 314-647-5511/800-288-4484 FAX 314-647-5891 WEB www.crescentparts.com SOUTHSIDE NATURAL BRIDGE Brian Hageman Chuck Caldwell 2100 South 59th Street 9400 Natural Bridge St. Louis, Missouri 63110 St. Louis, Missouri 63134 PHONE 314-647-5511/800-288-4484 PHONE 314-427-5511/888-427-5511 FAX 314-647-1469 FAX 314-427-0539 MANUFACTURER PRODUCT DESCRIPTION American Standard Commercial/Residential - Heating, Air Conditioning, Heat Pumps, Package Units American Standard Commercial Unit to 25 Ton Package PTAC'S American Standard Residential A C Equipment Aprilaire/Research Products Humidifiers, Dehumidifiers, Steam Humidifiers Barber-Colman Temperature Controls Bard Air Conditioning & Heat Pumps-Geothermal Bohn Unit Coolers, Condensing Units, Chillers, Condensers, Warehouse , Cold Storage

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Burnham Corp Cast Iron Boilers Water & Steam Copeland Corp. Compressors, Condensing Units, Parts Critical Environment Technologies Gas Sensing, Alarming Detection, CO, CO2, Refrigerant, Toxic Fantech Ventilation Exhaust Fans Fasco Motors First Co Hot Water, Chilled Water Fan Coils & Air Handlers General Humidifiers, Steam Humidifiers Hart & Cooley Smoke/Fire Dampers & Registers, Grilles, Registers, Accessories Heat Controller Air Conditioning & Heat Pumps Though the Wall Units Honeywell Air Cleaners, Drives-Variable Honeywell Excel DDC Energy Management, DDC, VAV Controls, VVVT, Commercial Zoning System, DDC Commercial Zoning, VVT Package Honeywell Excel Rapid Zone Zone System Control Honeywell, Inc. Temperature Controls, Dampers, Pneumatics, Actuators, Flame Safeguard, Electronic Air Cleaners, Energy Recovery Ventilators Remote Communicating Zone Package, Forced Air Hydroheat Geothermal Heat Pumps Johnson Controls, Inc. Temperature Controls, Pneumatics, Refrigeration Controls, Dampers, Smoke-Fire-Combo Dampers Lochinvar 90% High Efficiency Hot Water Boilers, Residential & Commercial Water Boilers Magic Aire Hot Water, Chilled Water Fan Coils & Air Handlers Maxitrol Co. Gas Pressure Regulators Micrometl Curb Adapters, Concentrics & Adhesives Mitsubishi Electric Ductless Split System, Air Conditioners & Heat Pumps Multi Aqua Fan Coils & Chillers Noritz Residential & Commercial Tankless Water heaters Paragon Controls Refrigeration Controls, Time Clocks Reznor Unit Heaters, Make-up Air Units, Duct Furnaces, Infrared Heaters Sporlan Valve Co. Expansion Valves, Driers, Regulators, Solenoids Therma-Flo OZ Saver Refrigerant Recovery Units Unico Air Handlers Viega Radiant Floor Heat White-Rodgers Temperature Controls, Gas Controls

Custom Product Solutions, Inc. Custom Product Solutions, Inc. (DBA Solutions Group)(DBA Solutions Group) Jeff Bendle, Keith Pulcher, Nick Pulcher, Kathie Jennings, Debbie Pulcher, Jeremy Pulcher 1767 Larkin Williams Rd, Fenton Missouri 63026 PHONE 636-343-0101 FAX 636-343-7474 TOLL FREE EMAIL FirstnameSTLSolutionsgrp.com WEB www.STLSolutionsGrp.com MANUFACTURER PRODUCT DESCRIPTION Governair Custom Air Handlers and A/C Systems Honeywell Analytics Gas Detection Equipment Kathabar Liquid and Dry Desiccant Dehumidification Systems Onicon Water Flow, Bi-Directional, Steam & BTU Metering Rosemex Fan Coils, Induction Units VAV Air Valves, Heaters, Cabinet, Baseboard, Unit, Wall Fin & Radiant Panels Spinnaker Industries Rotary Energy Recovery Systems Temtrol Custom Air Handling Units, Semi Custom Air Handling Units, Fan Coil Units and ARI Coils Thy Curb Roof Curbs, Seismic Curbs, Retro-Curbs, Equipment Mounting Supports UVDI High Intensity UV, Air Stream & Surface Disinfection Systems Yaskawa HVAC Variable Frequency Drives

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Debco Equipment Co., Inc.Debco Equipment Co., Inc. Dwane Busse, Michael D. Busse 1814 South Third St., St. Louis, Missouri 63104 PHONE 314-652-2562 FAX 314-652-2113 TOLL FREE 800-383-4669 EMAIL info@debcoequipment.com WEB www.debcoequipment.com MANUFACTURER PRODUCT DESCRIPTION Babcock & Wilcox Package Steam Boilers to 250,000#/hr Camus-Hydronics Condensing and Non-Condensing Boilers, Water Heaters and Pool Heaters to 6MMBH Con Dex Flue Gas heat Recovery Heat-Timer Lead/Lag and Indoor/Outdoor Controls Hurst Boiler Boilers & Boiler Room Equipment Peerless Steam & Hot Water C.I. Boilers

Dynamic Controls Inc.Dynamic Controls Inc. John Droege, Jeff Gross 1561 N. Warson Road, St. Louis MO 63132 PHONE 314-890-0820 FAX 314-890-0829 TOLL FREE EMAIL john.droege@dciusa.com, jeff.gross@dciusa.com WEB www.dciusa.com Peoria Office 1700 W. Luth Drive Peoria,IL61615 Phone: 309-692-8810 Fax: 309-692-7899

MANUFACTURER PRODUCT DESCRIPTION Andover Continum Pneumatic Controls APC Power Metering Easy Lobby Security, Card Access, Surveillance/CCTV, Digital Video Recording, Intercom Pelco Variable Speed Drives Schneider Electric DDC Controls Square D Temperature Controls Stentofon Daylight Harvesting TAC I /Net Energy Management Systems TAC Vista

Echelmeier CompanyEchelmeier Company Roger Echelmeier, Richard Smith-Moore, Wendy Smith-Moore, Pete Serve, Joshue Smith-Moore 700 Niehoff Dr, Suite F, Eureka, Missouri 63025 PHONE 314-576-7646 FAX 314-576-3041 EMAIL rich@echelmeier.com WEB www.echelmeier.com MANUFACTURER PRODUCT DESCRIPTION Alfa Laval Plate Heat Exchangers Baltimore Aircoil Co. Cooling Towers, Evaporative Condensers, Closed Circuit Cooling Towers, Plate & Frame Heat Exchangers, Ice Builders Federal Pumps Sump & Sewage Pumps Furlong Industrial Systems High-k Heat Exchangers Green Boiler Technologies- Boilers Sellers Engineering-Weben- Jarco Boilers Water Heaters, Boilers, Deaerators Patterson Pumps Complete HVAC Line with Accessories & Flo-Pak Packaged

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Systems Puroflux Cooling Tower Filtration Schott Acid Waste Piping Thermon Heat Tracing For All Applications Vibration Eliminator Co. Vibration Isolators VRTX Physical Water Treatment Electro Motion Refrigeration (EMR)Electro Motion Refrigeration (EMR) Jamie Horton, William Rice, Ryan Schuetz, Kristy Hesskamp, Tom Queathem, Steve Brunker, Tim Gregory, Scott Moore 901 Horan Dr. Suite 100, Fenton, Missouri 63026 PHONE 636-537-2355 FAX 636-537-2351 TOLL FREE 877-537-4NH3 EMAIL Electromo@emr-stl.com WEB EMR-STL.COM MANUFACTURER PRODUCT DESCRIPTION ACUAir Food Process HVAC & Make Up Air Units for HACCP.

Frick Co. Ammonia Chillers for A C & Process Cooling Refrigeration Compressors & Evaporative Condensers

Electronic Support SystemsElectronic Support Systems Ted Meyer Raymond Moore, John Good, Linda Pittner, Roxanne Goodwin, Pat Livingston, Jason Ruether, Geoff Klos, Barb Hild, Timothy Finnell, Steve Sims, Joe Hanneken 12926 Hollenberg Drive, Bridgeton, Missouri 63044-2407 PHONE 314-739-6400 FAX 314-739-6344 EMAIL essinfo@elecsupport.com WEB www.elecsupport.com MANUFACTURER PRODUCT DESCRIPTION Asco Automatic Transfer Switches Control Concepts Surge Protection Devices Emerson Controlled Techniques Variable Speed Drives Knurr 2-4 Post Rack Cabinets Liebert Corp Floor Mounted Units 1-60 Tons, Ceiling Mounted Units 1-8 Tons, Telecom Shelter Packaged Units, Control Room Units Up to 60 Tons Cabinet & Ceiling Mounted Units Up to 160KW Systems Spot-Cooler Air & Water Cooled

Enfab, Inc.Enfab, Inc. Chris Friedrich, Tim Van Doren, Sue Whitelaw 6871 Franks Rd., House Springs Missouri 63051 PHONE 636-677-3211 FAX 636-376-4170 TOLL FREE 800-673-3211 EMAIL enfab@accessus.net WEB www.enfabheatexchangers.com MANUFACTURER PRODUCT DESCRIPTION Enfab, Inc. Killebrew Fre-Flo Large Volume Water Heaters, Process Heat Exchangers, Repair To All Heat Exchangers, Retubing, Tube Bundle Aftercoolers, Double Wall Heat Exchangers/Tube Bundles, Tube Bending

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Engineered AirEngineered Air Jim White, Stuart Welter 2451 Executive Dr, Suite 101, St. Charles, Missouri 63303 PHONE 636-939-9688 FAX 636-939-9677 EMAIL stlouis@engineeredair.com WEB www.engineeredair.com MANUFACTURER PRODUCT DESCRIPTION Airtex Radiant Ceiling Panels (Hydronic) Engineered Air Dehumidification Units, Direct Fired Gas Heat Units, Indirect Fired Gas Heat Units, Electric MUA Units Heat Recovery Equipment, Hydronic Products (Fan Coils, Unit Heaters, Fin Tube) Packaged Custom & Standard Cooling & Heating Rooftop Units 6 to 120 tons DX, Heating Coils Standard & Integral Face/Bypass, Heat Wheels, Heat Plate Exchangers, Standard & Custom Fan Coil Units, Industrial Turnover Units, Replacement & New Installation Air Cooled Condensers, Air Handling Units, Air Rotation Units, Heat Recovery Wheels, Coils (Chilled Water, Hot Water, DX Engineered Thermal Systems, Inc.Engineered Thermal Systems, Inc. Don Beckley, Sally Beckley, Rick Dorste, Tim Frailey, Ron Hubbard, Rick Reznack; Office Manager: Rita Harris; Technical Assistants: Sara Bryant, Michelle Vaughn, Sandi Strinni 235 Millwell Dr, Maryland Heights MO 63043 PHONE 314-770-0773 FAX 314-770-1117 EMAIL sales@engthermsys.com WEB www.engthermsys.com & www.johnsoncontrols.com MANUFACTURER PRODUCT DESCRIPTION Airflow Equipment Company Custom Air Handling units, chilled/hot water, Heat Recovery Wheel, Heatpipe, Plate Heat Exchanger, 4" Wall Sound Engineered Air Handling Unit Systems. Asp-Div of First Co. Chilled Water/DX Air Handling Units, Both Single & Double Wall; Vertical/Horizontal Cabinet & Concealed Fan Coil Units & Cabinet Unit Heaters Bessamaire Direct Fired Evaporative Cooling Make-Up Air Handling Units & Air Rotation Units Bry-Air Industrial and Commercial Desiccant Dehumidifiers-Both Standard and Custom Desert Aire Swimming Pool Dehumidification Systems; 100% Outside Air Cooling/Heating Packaged Units with Enthalpy Wheel Option Energy Labs Custom Air handling Units-Chilled/Hot Water, Gas Fired Evaporative Cooling and Compressorized SZ/MZ Rooftop Units; AMCA 300 Sound Tested Air Handling Unit Systems ERV Systems Total Energy SEMCO Division Heat Recovery Air handling Units & Related Accessories Fafco Modular Ice Storage Tanks, Media & Controls Fisen Corp Specialized Air Handling Units, Packaged Rooftop Units, Unit Ventilators, Heat Pumps, Replacement SZ/MZ Rooftop Units, and Modular Chiller Plants Griswold Pressure Independent Flow Control Valves, Reheat Coil Piping Packages, Hose Kits, & Factory Piped Valve Packages Ingenia Next Generation Thermal Break and No-Thru-Metal Custom Engineered Air Handling Systems

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JCI/Skymark Water Source Heat Pumps; Air and Water Cooled Indoor Self Contained Units; Computer Room Units; Harsh Environment Products; Vertical Stacked Self Contained, Retrofit and Water Source Heat Pump Units JCI/York Unitary Commercial/Residential-JCI/York Unitary Products Group (UPG) HVAC Units, Furnaces, Split Systems & Rooftop Units (1-150 Tons), CCS Control Systems Lumalier UV Lighting Systems & Products Magic Aire Vertical & Horizontal Unit Ventilators-Chilled/Hot Water, Steam & DX Pure Steam, Electric & Gas Humidification Systems & Products Rittling Special Enclosures, Finned Tube Radiation, Convectors, Cabinet & Unit Heaters, Fan Coil Units, Radiant Ceiling Panel Heating/Cooling Units, Chilled Beams, Water Source Heat Pumps Samsung Variable Refrigerant Flow Systems-Heat Pump and Simultaneous Heat/Cool-Both Air and Water Cooled, Multizone and Single Zone Ductless Split Systems Sierra Fresh Air Systems 100% Outside Air High Turndown Packaged And Split System Rooftop Units; Direct and Indirect Make Up Air Units and Evaporative Cooling Unit's Stellar Energy systems Custom Engineered Boiler, Chiller, and Industrial Modular Power Plants Temspec Vertical/Horizontal Ducted Unit Ventilators-Chilled Water, DX Self-Contained, Remote, & Specialty Units Xetex Rotary , Plate & Heat Pipe Heat Recovery HVAC Units, Compressorized 100 % Outside Air Handling Units York Int. Corp Condensing Units, Rooftop Units-Constant & Variable Volume; Ice Storage Systems; Underfloor and Overhead Variable Air Volume Boxes & Systems (FLEXSYS/AIR FIXTURE) York Int. Corp. Chillers-Direct & Steam Fired Absorption-Centrifugal- Gas Engine Drive-Screw-Chiller/Heater. Air Handling Units-Standard & Custom Coils; Fan Coil Units

FriemelFriemel--Love Co.Love Co. Dan Landis, Gary Manley, Shirley Kugler 7704 Big Bend Boulevard, St. Louis, Missouri 63119 PHONE 314-647-6363 FAX 314-647-4307 EMAIL dlandis@friemellove.com WEB www.friemellove.com MANUFACTURER PRODUCT DESCRIPTION Air Enterprises, LLC Custom Air Handling Units, Heat Recovery, Desiccant Dehumidification Aircuity Distributed Multipoint Air Sampling System. Total Volatile Organics (TVOC's), Temperature, Humidity CO2, CO, Small Particles and others. Demand-Based Ventilation Control. Danfoss Graham AC Variable Frequency Drives, 208V/230V/460V Up To 600 HP Ebtron Air Flow Measurement Systems Erie (Schneider Electric) Motorized Water Valves, Thermostats, Synchron Motors Howden (Joy Fans) Axial Vane, Adjustable & In-flight Controllable Pitch Phoenix Controls VAV & Constant Volume Laboratory Airflow Controls, Isolation Room & Vivarium/Cage Rack Airflow Controls Seibu Giken (SG America) Desiccant Rotors & Cassettes Up To 50,000 CFM. Packaged Dehumidification Systems, Total & Sensible Heat

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Recovery Wheels. Strobic Air Corp. Tri Stack High Plume, High Dilution, Perchloric Exhaust Fan Systems. Systecon, Inc. Packaged Pumping Systems - Variable Flow & Constant Flow Primary, Primary-Secondary, Vari Prime (Variable Primary Systems) Wing Co. Steam & Hot Water, VIFB & IFB Coils, Make-Up Air Units, Door Heaters, Steam & Hot Water Unit Heaters, Indoor/Outdoor Steadyair & FAS Systems, Boiler Draft Inducers

GausGaus--Scott Co.Scott Co. Tom Gaus, Tom Groark, Jr., Amy Howard, Jeremy Browning, Tammy Ameis, Cindy Perkinson, Tom Wilkinson 9730 Reavis Park Dr., St. Louis, Missouri 63123 PHONE 314-997-0200 FAX 314-997-1843 EMAIL tomgaus@gausscott.com WEB www.gausscott.com MANUFACTURER PRODUCT DESCRIPTION Air Balance Fire & Smoke Dampers, Volume Control Dampers Air Concepts Spot Cooling Diffusers, Jet Diffuser Air Guide Grilles, Registers, Diffusers American Warming Louvers, Tight Closure, Dampers, Penthouses, Heavy Duty dampers Belimo Controls Damper, Actuators & VAV Controls Berko Electric Co. Electric Unit Heaters, Baseboard Heaters Broan Lo-sone Exhaust Fans Cesco Products Fire Dampers, Smoke Dampers, Access Doors, Plenum Doors Cierra Products Drywall Panels, Fire-Rated Doors, Security Panels Delhi Fan Utility Fans, Duct Blowers, Roof Exhausters, Supply Fans Dynaforce Air Curtains, Gas Fired Make-up Air Units Dynasonics Silencers, Plenum Housings Fabric Air Fabric Duct Systems Flame Gard Grease Duct Access Doors, Grease Filters Flexonics Expansion Joints, Anchors, Guides, Compensators, Flexible Connector Hart & Cooley Diffusers, Registers, Grilles Hero Fabric Round Duct Kees, Inc. Security Grilles, Architectural Grilles, Slot Diffusers, Access Doors Kinetics Noise Control Vibration & Noise Control, Springs, Hangers, Floating Floors, Fiber Glass Mounts, Mounting Bases, Rails, Seismic Restraint Krueger Grilles, Registers & Diffusers Mars Air Curtains, Air Doors MilCor Drywall & Fire Rated Access Doors Moffitt Corp. FRP Centrifugal Fans, Axial Fans, Fiberglass Louvers & Dampers Pate Curb Roof Curbs, Equipment Supports Penn/Barry Fans Pottorff Fire & Smoke Dampers, Volume Control Dampers Reddi Heat Co. Electric Duct Heaters, Unit Heaters Reliable Products Grilles, Registers, Diffusers Roof Products & Systems Roof Curbs, Equipment Supports SEMCO Spiral Duct & Fittings, Plenum Housings, Silencers Thermal Products VAV Diffusers Twin City Hose Expansion Joints & Flexible Connectors, Metal Hose Vent Products Louvers & Dampers Ventaire Carbon Monoxide Exhaust & Welding Systems Warren Manufacturing Electric Duct Heaters

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Heartland Mechanical SolutionsHeartland Mechanical Solutions Mike Poland 1250 N Winchester, Suite E, Olathe, Kansas 66061 PHONE 913-894-2030 FAX 913-894-2086 EMAIL mike@hms-kc.com WEB www.hms-kc.com MANUFACTURER PRODUCT DESCRIPTION ClearWater Systems "Dolphin" Advanced Water Treatment. Non-Chemical Water Treatment For Boilers, Condenser Water Systems & Fountains

Hughes Machinery CompanyHughes Machinery Company Erin Roehrs, John Klein, 1660 Larkin Williams Drive, Fenton MO 63026 PHONE 636-717-1810 FAX 636-717-1813 TOLL FREE EMAIL klein@hughesmachinery.com WEB www.hughesmachinery.com Tim Powell 1440 College Blvd Lenexa, KS 66215 PHONE 913-492-0355 FAX 913-492-1420 MANUFACTURER PRODUCT DESCRIPTION Ace Boiler Ace Series: Gas-Fired Water Heaters; Package Hot Water Systems; Semi-Instantaneous Water Heaters; Storage Tanks Unlined or With Glass, Cement, Or Pre Krete Lining Advanced Thermal Systems Slip Joints and Ball Type Expansion Joints, Slides, Guides Ajax Boiler Ajax Series: Hot Water & Steam Inclined Water Tube Boilers, Unfired Steam Boilers; S&T Heat Exchangers, Boiler Feed Systems, Flash Tanks,Expansion Tanks, Blow down Tanks. Atlas Series: High Efficiency Condensing Boilers Alamo Water Water Softeners & Reverse Osmosis Systems Ambassador Water and air cooled condensers, customized shell and tube exchangers for industrial applications. American Heating Co. Complete Range of Thermal Fluid Heating Systems, Pumps Skid Mounted Packages, System Design Assistance American Marsh Pumps Base mounted, close or flex coupled, vertical inline, vertical turbine, horizontal split case, UL listed fire pumps, and more. Autoflame Controls Micro-computer based combustion controls package, parallel positioning O2 trim, remote monitoring, modbus/metasys communication ready. Bestobell Steam Traps F&T, I&B, TD, Delta Type Steam Traps, Condensate Pumps, Y-Strainers Packaged Systems BFS Boiler Feed Systems, Vertical Boiler Feed Systems, Deaerators, Surge Tanks, Condensate Systems, Blow down Separators, Blow down Tanks, After coolers, Flash Tanks Cambridge Engineering 99% efficient space heaters and make up air units with VSDs and customized controls. Durabla Check Valves & Vacuum Breakers Fireye Flame Safeguard, Parallel Positioning O2 Trim Boiler Sequencing

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Fuel Efficiency LLC Turbulators, soot blowers, scale removing chemicals Heatsponge Johnston Boiler 83 % efficient, 50 to 2500 hp, 3 or 4 pass wet back fire tube boilers, heat recovery steam generators and more. Jordan Valves Process Regulators, Air Actuated Control Valves, Sanitary Control Valves and Steam Traps, Sanitary Steam Traps-5 degree Sub-Cooling Limpsfield Burners Precision manufactured high performance burner, guaranteed to operate at low excess air throughout it's operating range, 0.75 to 110 MMBTUH capacities. Lipten Allen Bradley PLC based combustion controls and balance of plant controls with fully metered cross limited combustion management capability & more. Marwin Ball Valves, Actuators, Custom Valves Patterson-Kelley Max 99% efficient hot water condensing boilers 300 to 3000 mbh, dual fuel with gas/propane, outdoor installation options, packaged plate and frame or shell and tube hot water heaters. Schebler Stacks Positive Pressure Breaching & Stacks for Boilers; Grease Duct: Custom Engineered Free Standing Chimneys Steriflow Sanitary Valves & Sanitary Pressure Regulators Suscon Stacks Factory Fabricated Stacks and Exhaust Systems, Free- Standing, Guyed, Refractories Thrush Co. Centrifugal Pumps, Inline and Base-Mounted,, S&T Heat Exchangers, Hot & Cold Water Valves, Packaged Heat Transfer Systems, Packaged Booster Systems, Expansion Tanks, Hydronic Specialties Triad Boilers 83 % efficient, 10 to 40 hp hot water to 150 150 psig steam, gas/oil/propane firing. Unilux Boiler Max 85 % efficient hot water and steam boilers 1,000 to 38,000 mbh Gas/Oil Alternative fuel firing, field erect models, larger output, and 600 psig models are available. Ware Rental Boilers 15 hp up to 75,000 pph at 750 psig, trailer mounted. In stock boilers, ready to ship high pressure steam boilers. Rental chillers 20 to 600 tons. Certified valve rebuilding operations. Warren Controls Pneumatic, electric, and pressure independent control valves for HVAC, Industrial, and central energy plant applications. York Shipley Boilers 83 % efficient, 50 to 1600 hp, 3 or 4 pass dry back fire tube boilers, vertical tubeless boilers to 30 hp. HVAC Solutions, Inc. HVAC Solutions, Inc. (DBA Solutions Group)(DBA Solutions Group) Keith Pulcher, Kathie Jennings, Debbie Pulcher, Jeremy Pulcher, Jeff Bendle, Nicholas Pulcher 1767 Larkin Williams Road, Fenton, Missouri 63026 PHONE 636-343-0101 FAX 636-343-7474 EMAIL keith@stlsolutionsgrp.com WEB www.stlsolutionsgrp.com MANUFACTURER PRODUCT DESCRIPTION American Coil Exact Replacement Condenser Coils Applied Air Direct/Indirect Air Handling/Rotation Units Buffalo Air Handling Custom Foam Panel Aluminum Construction Air Handling Units DF Fan Forward Curve Fan Replacements Heatcraft Coils, Drain pans, Eliminators, and Tube Bundles Marlo ARI Certified Coils, Integral Face & Bypass Coils and Quick Ship Replacement Coils

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Nortec Industries Electric, Gas, Steam, Air/Water, and Water Only Humidifiers Ruffneck Steam, Hot Water, and Explosion Proof Unit Heaters Spirax-Sarco Steam Specialties Steril-Aire UVC Systems For Microbial Control, Enhanced IAQ, and Energy Savings Superior Rex Horizontal, Vertical, and Stacked Fan Coil Units USA Coil & Air Quick Ship Replacement HVAC Products Johnson Controls, Inc.Johnson Controls, Inc. Jon Danuser 2280 Ball Drive, St. Louis, Missouri 63146 PHONE 314-569-1570 FAX 314-569-1394 WEB www.JCI.com MANUFACTURER PRODUCT DESCRIPTION Johnson Controls, Inc. Temperature Controls, Energy & Security Management Systems

Koch Air, LLC Koch Air, LLC -- Bryant DivisionBryant Division Ron Seifried, Warren Creydt, Lance Meyerpeter, Mike Winchester, Chris Freeman 3141 Riverport Tech Center Drive, Maryland Heights, Missouri 63043 PHONE 314-595-7600 FAX 314-595-7625 TOLL FREE 800-333-7256 WEB www.kochairbryant.com MANUFACTURER PRODUCT DESCRIPTION Bryant Commercial & Residential Air Conditioning Gas Furnaces, Heat Pumps, Whole House Standby Generators, Geothermal Split Systems, Package Heat Pumps Dunkirk Commercial & Residential Boilers LG Products Duct-Free Air Conditioning, Art Cool, Mini-Split, Multi-Split, Ceiling Cassette Micro Metals Roof Curbs, Plenums & Economizers Zone Perfect Residential & Commercial Zoning Systems Koch Air, LLC Koch Air, LLC -- Carrier DivisionCarrier Division Wes Hueseman, Commercial Sales Manager, Harvey Ellebrecht, Dan Layton, Pat Simms, Tom Valchar, Kevin O'Neill, Jeff Marlow, Doug Merkel, Ron Chalfant, Maggie Huggard, Bob Gunn, Carl Hasselbring, Janet Johnson, Dan Forth, Chris Freeman, Corey Maynard, Laura Leavitt, Matt Dissett, Carl Leth, Clint Robinson, Dave Schurk, Ron Buol, Erin Rouse, Bryan Reinhart, Brett Stoll 3141 Riverport Tech Center Dr, Maryland Heights Missouri 63043 PHONE 314-595-7600 FAX 314-595-7649 1-800-333-7256 Equote-stl@kochair.com WEB www.kochair.com; www.commercial-carrier.com MANUFACTURER PRODUCT DESCRIPTION Air Zone Air Handling Equipment Bard Wall-Mounted Self-Contained HVAC Systems Carrier Air Conditioning Air Conditioning, Heating, Refrigeration, Heat Pumps, Chillers, Rooftop Units, Air Handling Units, Direct Digital Controls Discovair, LLC Water Source Heat Pumps, Geothermal Loop Fields, Commercial Air Handling Units, Make-Up Air Units, Louvers, Fire-Smoke Dampers, Humidifiers, Dehumidification Units, Pumps, Fluid Coolers, Exhaust Fans, VAV Air Terminal Units, Registers, Grilles, Diffusers Kite Air Handling Units, Custom LG Duct-Free Split Systems, PTACS, Room Air conditioners,

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& Variable Refrigerant Flow Systems MagicAire Vertical & Horizontal Fan Coils, DX, Chilled & Hot Water Micro Metl Roof Curbs, Plenums & Economizers Modine Unit Heaters & Engineered Products MultiAqua Chilled Water Products & Systems Q Mark Electric Heating Schwank Radiant Heating Koch Air, LLCKoch Air, LLC--Parts & Supplies DivisionParts & Supplies Division Jon Cappellin, Dave Mulchek, Chuck Huber, Ron Seifried-Manager 3141 Riverport Tech Center Drive, Maryland Heights, Missouri 63043 PHONE 314-595-7600 FAX 314-595-7625 TOLL FREE 800-444-0868 WEB www.kochair.com MANUFACTURER PRODUCT DESCRIPTION Appion G5Twin Refrigerant Recovery Machine Aprilaire/Research Products Humidifiers, Thermostats, IAQ Aspen Air Air Filtration-Grill Mount, Furnace Mount Bell & Gossett Hydronic Pumps, Valves, Controls Carlyle/Carrier Compressors Copeland Corp. Hermetic & Semi-Hermetic Compressors Dunkirk Commercial Cast Iron Boilers Duro Dyne Air Regulation, Tools & Zoning Fieldpiece Hand Held Meters, Pocket Instruments Hart & Cooley Grilles & Registers, Flex Duct Honeywell Electronic Air Cleaners, Controls, Zoning, Energy Recovery Ventilators, Humidifiers & Thermostats ICM Relays & Circuit Boards LG Products Duct-Free Air Conditioning-Art Cool, Mini-Split, Multi- Split, Ceiling Cassette Metal Fab Pipe & Fittings Modine Unit Heaters NU-Calgon Chemical Cleaners, Leak Detectors, Sprayers Promax (Amprobe) Refrigeration Recovery Units, Manifolds & Vacuum Pumps Research Products Aprilaire Humidifiers, Space guard, Energy Recovery Ventilators, Thermostats & Zoning Southwark-Metal Fittings Fittings Totaline Factory Authorized Replacement Parts Totaline Star Whole House Dehumidifier, Electrostatic Filters White-Rodgers Commercial/Thermostats, Heating Controls Kuhlmann Supply Co IncKuhlmann Supply Co Inc Rick Kuhlmann, Dave Fahrenhorst, Mike Knaebel, Bob Wood, Theresa Higgins, Guy Behlmann, John Joseph, Michelle Hoff, Holly Patrick, Blake Steiner 13836 Parks Steed Dr, Earth City MO 63045 PHONE 314-298-1114 FAX 314-298-1115 EMAIL michelle@kuhlmannsupply.com WEB www.kuhlmannsupply.com MANUFACTURER PRODUCT DESCRIPTION Acme Roof Hoods & Ventilators, Penthouses and Roof Curbs Air Technology Solutions AirMATION Vehicle Exhaust Systems Airius Thermal Equalization/Destratification Fans AJ MFG Stainless Steel Grilles AmbiRad Gas Radiant Heaters Arrow United Louvers, Dampers and Penthouses

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Broan Exhaust Fans Cambridge Engineering Make Up Air & Industrial Space Heating Car-Mon Vehicle Exhaust & Fume Removal Coil Co HVAC & Fan Coils Dayus Register & Grille Registers & Grilles (Aluminum) Design Polymerics Duct Sealants and Spray Adhesives Flexmaster USA Flex Duct Hart & Cooley Flex Duct, Grilles, Registers & Diffusers Jenco Fan Exhaust/Supply Fans Larkin Kitchen Hoods, Fire Suppression Systems Lewis & Lambert Spiral Duct, Pipe & Fittings NCA Manufacturing Fire, Smoke and Fire/Smoke Dampers, Louvers, Dampers and Ventilators Peerless Centrifugal HVAC Fans PRICE Industries Grilles, Registers and Diffusers, VAV Boxes and Fan Terminal Units, Sound Attenuators Q-Mark Electric Heaters Q-Sox Fabric Air Duct Systems Raymon-Donco Plenum Slot Diffusers & Architectural Linear Diffusers Reliable Louvers, Dampers & Specialty Grilles Roto-Twist Remote Operated Dampers-Roto-Twist Cable S&P Ventilation Exhaust/Supply Fans Sourcetec Vehicle Exhaust & Fume Removal Sterling Unit Heaters Tutco Duct Heaters, Electric United Enertech Dampers Vibration Eliminator Vibration Isolators Langendorf Supply Co., Inc.Langendorf Supply Co., Inc. Ken Arnsmeyer, Neil Gray, Gary Smith, Jim Fahrenhorst, Jeff Casey, Cheryl Meehan, Pat Olwig, Kim Dickey, Steve Liescheidt, Susan Schniepp, Lou Kranung, Aaron Schweiss, Doug Miles, Becky Wilburn, Dawn Schmidt, Krista Arnsmeyer, Kristi Schniepp, Ryan Elley, Vicki Welther, Tom Fender, Bryan Talley, Jacqui Rice, Paul Prutch, Kevin Wingenbach, Jim Cunnigham 4653 Crossroads Industrial Dr., Bridgeton, Missouri 63044 PHONE 314-291-4892 FAX 314-291-7815 EMAIL karnsmeyer@lsco-inc.com WEB www.lsco-inc.com MANUFACTURER PRODUCT DESCRIPTION Airius Specialty Destratification Units for High Bay Applications AmberBooth-VMC Vibration Isolation AMPCO Positive Pressure Stacks, Breeching, Zero Clearance Systems, Engine-Turbine Exhaust Cerus Industrial Variable Frequency Drives & Starters CFM Flow Measuring & Balancing & Control Dampers-Manual or Motorized Duct Sox Fabric Air Dispersion Products Commercial/Industrial Applications Flanders Full Line of Filtration Products - Filters, Housings, Specialty Custom Filters GeoComfort Enertech Water Source Heatpumps GreaseMaster Kitchen Hoods Gripple Wire Joiners, Hangers and Tensioners Halton Kitchen Hoods Hazloc Industrial and Explosion Proof Electric Unit Heaters Hi-Velocity High Velocity Commercial Supply Air Duct Systems, Air Diffusers, Air Handlers, Furnaces, Industrial Spot Cooling & Modular Chillers Lindab Spiral Duct , Self-Sealing Fittings, Diffusers, Chilled Beam,

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Acoustical Silencers Loren Cook Fans, Blowers, Ventilators, Air Curtains, Gravity Vents, Material Handling Air Movers, Heat Recovery Units Milcor, Inc. Access Doors, Heat/Smoke Vents, Roof Hatches, Floor Doors Monoxivent Fume Collection Systems, Portable Collectors, Infra-Red Heaters PermAlert Cable Liquid Leak Detection Systems Powered Aire, Inc. Air Curtains & Air Doors Q Mark Cabinet, Unit & Wall Heaters, Convectors, Radiant Heaters, Portable Heaters, Baseboard Heaters, Door Heaters, Electric Heaters, Explosion Proof Heaters Raymond-Donco Grilles, Registers & Diffusers RenewAire Full Enthalpy Energy Recovery Ventilators, Commercial, Industrial & Residential Ruskin Louvers, Dampers, Penthouses, Access Doors & Panels, Air Measurement Stations Outside Air Control Damper/Monitor, Air Curtains Ruskin Sound Control Sound Absorbers, Acoustical Silencers, Acoustical Panels, Sound Attenuators Seiho Specialty Grilles, Registers, & Diffusers Sheet Metal Connectors Spin-In Collars, Square-To-Round Adapters, Vanes, Etc. Solar Panels Solar Water Panels & Systems for Domestic & Heating Water Systems Space-Ray Infrared Gas Radiant & Tube Heaters Sterling Indirect & Direct Gas Fired Products Thermaflex Flexible Ducts & Accessories, In-Line Duct Fans Thermal Core Low Temp Diffusers Non-Metallic Titus Grilles, Registers, Diffusers, Terminal Units, VAV Boxes TriaTek Isolation Room Controls, Laboratory Control systems, Critical Environment Systems Airflow Monitor System Tutco Electric Duct Heaters UNICO High Velocity Commercial Supply Air Duct Systems, Air Diffusers, Air Handlers, Furnaces, Industrial Spot Cooling & Modular Chillers VAW Specialty Sound Attenuators Westinghouse High Efficiency Lighting Fixtures Young Regulator Remote Operated Control Devices & Dampers Magary Sales, Inc.Magary Sales, Inc. Tim Magary, Chuck Rauh, James Rhodus 10144 Harwich Drive, St. Louis Missouri 63126 PHONE 314-753-9411 FAX 870-445-3159 EMAIL info@magarysales.com WEB www.magarysales.com MANUFACTURER PRODUCT DESCRIPTION Aget Mfg. High Efficiency Cyclones, Bag Houses and Fan Filter Units, Silo/Bin Vents and Mist Collectors, Dustkop & Mistkop Products American Coolair Wall Propeller Fans, Upblast & Hooded Power Roof Ventilators & Axial Duct Fans Armstrong Monitoring Hazardous Gas Detection & Monitoring Equipment California Dynamics Spring, Neoprene & Seismic Isolators Clean Air Designs Energy Recovery Units: Heat Pipe, Total Enthalpy Wheels or Air-to-Air Plate Type Heat Exchangers Ilg Industries Centrifugal Upblast, Filtered Supply, Downblast, Wall & Inline Fans, Ceiling Fans, Utility Sets & Gravity Ventilators Kees, Inc. Access Doors, Air Mixers, Kitchen & Industrial Hoods,

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Air Handling Units, Slot Diffusers, Air Cabinets, Security & Architectural Grilles Leader Industries Fire, Smoke, Fire/Smoke Dampers, Control & Balance Dampers, Barometric, Backdraft Dampers, Formed & Extruded Louvers Reliable Products Aluminum Grilles, Registers & Diffusers, Unit Ventilator Louvers

Mead O'Brien, Inc.Mead O'Brien, Inc. J. J. Nagel, Ron Jansen, Sherry Atchison 10800 Midwest Ind. Bl., St. Louis, Missouri 63132 PHONE 314-423-5161 FAX 314-423-5707 CELL 314-541-3693 TOLL FREE 800-874-9655 EMAIL jnagel@meadobrien.com WEB www.meadobrien.com MANUFACTURER PRODUCT DESCRIPTION Armstrong Fluid Handling Condensate Pumps Armstrong Hot Water Steam, Water-To-Water Gas Armstrong Hot Water Group Electric & Mechanical Mixing Valves, BAS Capable Armstrong Lynnwood Steam/Water Hose Stations Armstrong Machine Works Steam Dispersing & Self Generating Steam humidifiers, Steam Traps, Air Water, Steam PRV's, Instantaneous Water Heater, Mechanical & Electrical Condensate Pumps

ASCO Solenoid Valves Dwyer Instruments, Inc. Low Pressure Controls & Gauges Flowline Butterfly Valves & actuators Foxboro Steam, Water, Gas Flow Meters Jamesbury Screwed, Flanged, Ball, Butterfly Valves Keckley Strainers Strainers, Water & Steam Koldwave Water & Air Cooled Air Conditioners & Heat Pumps Kunkle Safety & Relief Valves Lattner Boiler Steam, Hot, & Electric Water Boilers Mitsubishi Electric Ductless Split Systems, Energy Recovery Units Ocean Aire Air & Water Cooled Portables Parker Brass, 316 SST, Fittings Tube & Track Sanyo Ductless Split System, Air Conditioners Sensus Gas Pressure Regulators Sisco Pressure Temperature, Test Plugs Trerice, Weksler Thermometers, Gauges Watts Alamo Water Softeners Mechanical Supply Co., Inc.Mechanical Supply Co., Inc. Chip Barmeier, Gordon Bell, Paul Brockfeld, 919 Horan Drive, Fenton, Missouri 63026 PHONE 636-343-9404 FAX 636-343-0144 EMAIL sales@mechanicalsupply.com WEB www.mechanicalsupply.com MARYLAND HEIGHTS BELLEVILLE 96 Weldon Parkway 319 Centreville Avenue Maryland Heights, Missouri 63043 Belleville, Illinois 62220 PHONE 314-567-5550 PHONE 618-236-2772 FAX 314-567-4906 FAX 618-236-2447 MANUFACTURER PRODUCT DESCRIPTION

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Bard Residential & Commercial Heating & Air Conditioning Equipment Carlyle Compressors & Parts Dunham Bush Compressors, Unit Coolers, Condensers, Chillers, Parts Frigidaire Residential & Commercial Heating & Air Conditioning Equipment Heatcraft-Larkin Refrigeration Equip. & Unit Coolers LAARS Commercial and Residential Mammoth Light Commercial Heating & Air Conditioning Equipment Mitsubishi Electric Air Conditioning Equipment, Ductless Mini-Splits Modine Unit Heaters, Duct Furnaces, Packaged Heating Tecumseh Products Co. Compressors, Condensing Units & Parts Weil McLain Hot Water & Steam Boilers & Parts White-Rodgers ComfortPlus™, Air Cleaners, UV Lights, Humidifiers, Zone Dampers, Stats WILO Variable Speed Circulators Wirsbo Hydronic In-Floor Radiant Heat Systems MidMid--Valley Radiants & Industrials, Inc.Valley Radiants & Industrials, Inc. Mike Herzog, Paul Busch, Mattt Busch, Randy Thacker P.O. Box 3430, 3528 Greenwood Blvd., St. Louis, Missouri 63143 PHONE 314-644-3689 FAX 314-644-1502 TOLL FREE 800-727-0064 EMAIL mid-valleyradiants@sbcglobal.net WEB www.mid-valleyradiants.com MANUFACTURER PRODUCT DESCRIPTION American Infra-Red, Inc. American Gas Infra-Red Heaters Breidert Air Products Commercial & Industrial Exhaust & Supply Fans Combustion Research, Inc. Reflect-O-Ray Vacuum Vented, Tube Type Infra-Red Detroit Radiant Products Re-Verber-Ray Gas & Electric Infra-Red Heaters, Surface Combustion & Tube Type Units, Two Stage Hi/Low Fire Tube Type Units Dowco Dampers, Louvers, Shutters FOF, Inc. Flow-E-Con Fabric, Air Flow Control Ducts Fostoria Electric Infra-Red Heaters, Electric Unit Heaters Global Finishing Complete Industrial Painting Systems ICE Custom Air Handlers, Gas/Oil/Steam/Electric/DX/Chilled Water JBI, Inc. Industrial & Commercial Paint Booths For Any Application Perfection Gas Fired Construction Heaters, Infra-Red Process Burners Ruffneck Explosion-Proof Electric Forced-Air Heater & Corrosion-Resistant Washdown Unit Heaters Rupp Air Management Systems Rupp Air Management Equipment -Gas, Electric, Steam, Hot-

Water, Air Rotation, VAV, Make-Up Air Heaters, Direct Fired Space Heaters, Indirect Fired Space Heaters, Indirect Fired Air Rotation Heaters

Sterling Div of Mestek Co. Gas Fired Unit Heaters & Engineered Products U.S. Distributing, Inc. Sun Dog Temporary Heaters for Construction Projects, Rental Air Conditioners

Midwest Machinery CompanyMidwest Machinery Company Robert M. Gladstone, Troy Gladstone, Bob Gladstone III,, Mike Todd, Bill Congdon, Bob Stortz, Ann Sowards, Kathy Hamilton, Tiffany Richardson, Dave Cragen, Jeff Henderson, Rob Stortz, Chuck Homington 17814 Edison Avenue, Chesterfield Missouri 63005 PHONE 636-537-1919 FAX 636-537-1920 EMAIL Info@midwestmach.com WEB www.midwestmach.com

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MANUFACTURER PRODUCT DESCRIPTION American Turbine Commercial, Industrial and Process Vertical Turbine Pumps Armstrong Pumps Shell & Tube Heat Exchangers, Plate & Frame Heat Exchangers Vertical In-Line, Dual ARM Centrifugal Pumps, Hydronic Specialties, Heat Exchangers, Packaged Pumping Systems & Plumbing Systems Climate Master Geothermal & Water Source Heat Pumps including Vertical Stack Laars Heating Systems High Efficiency, Condensing& Noncondensing, Copper Finned Tube Boilers & Water Heaters Marley Cooling Technologies Packaged & Field Erected Cooling Towers, Evaporative Condensers, Cooling Tower Repair Service & Upgrades, Fluid Coolers Miljoco Corporation Niles Tank Custom Tanks for all systems. Glass Lined Storage Tanks Novar Controls Energy Management and Building Controls PEP Cooling Tower & Process Water Filtration Petra Air and Water Cooled Chillers, Air Handling Units, Hermetic Scroll Compressors, Semi-Hermetic Compressors, Water Source units, Computer Room Units, Outdoor Air Units Recold Fluid Coolers & Evaporative Condensers Security Chimney AL29-4C, Stainless Steel, Positive Pressure Venting Systems Smardt Chillers Oil-free Centrifugal Chillers, Air Cooled, Water Cooled through 1200 Tons, Turbocor compressors Square D Variable Speed Drives, Starters & Disconnect Switches Trend Controls Integrated Building Controls and Building Security Access Wheatley Quality Hydronic Specialties NationNation--Wide Refrigeration, Inc.Wide Refrigeration, Inc. Ken Chailland, Charles Good, Gary Bradshaw 227 Millwell Drive, Maryland Heights, Missouri 63043 PHONE 314-291-5540 FAX 314-291-5916 TOLL FREE 800-952-3685 EMAIL sales@nationwiderefrigeration.com WEB www.nation-widerefrigeration.com MANUFACTURER PRODUCT DESCRIPTION Airgas Ammonia Baltimore Aircoil (B.A.C.) Condensers, Towers, Evaporator Coils Bohn Refrigeration Systems Chester-Jensen Co., Inc. Ice Builders & Water Chillers Gebhardt Industrial Evaporator Units H.A. Phillips Co. Control Valves & Regulators Hansen Technologies Ammonia Controls & Hand Valves & Automatic Purgers & Ammonia Pumps & Relief Valves Henry Valves Ammonia Valves Herl Ammonia Valves Hermetic Hermetic Ammonia Pumps Howe Ice Makers, Shell & Tube Exchangers, Vessels Krack Industrial Unit Coolers Manning Systems Ammonia & Freon Leak Detectors Mueller Plate-Heat-Exchangers, Chillers Mycom Compressor Parts Pure Air Technologies Ammonia and Halocarbon Leak Detectors Refrigerating Specialties Ammonia Purgers, Ammonia Control Valves, Hand Valves & Relief Valves Shank Ammonia Relief Valves & Hand Valves

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Viking Ammonia Pumps Vilter Refrigeration Compressors & Equipment, Parts, Valves, Accessories York Compressor Parts & Oil

Pero Sales, Inc.Pero Sales, Inc. Jay Peters, Tom Trautman, Dennis Holtmeyer, Carol Brooks 10900 Manchester Road, Suite 202, St. Louis, Missouri 63122 PHONE 314-965-2308 FAX 314-965-7705 TOLL FREE 866-848-1041 EMAIL jay@perosales.com-tom@perosales.com-dennis@perosales.com WEB www.perosales.com MANUFACTURER PRODUCT DESCRIPTION Aerofin Corp. Spiral Wound Heating, Cooling Coils, HVAC & Heavy Duty Industrial Aerovent Fan Propeller, Axial, Centrifugal Fans, Roof Ventilators, FRP Fans, Gas Fired & Steam Make-Up Air, Door Heaters Air Distribution Concepts Fabric Duct Systems & Air Diffusers Amreican Air Filter Dry & Wet Dust Collectors, Replacement Cartridge & HEPA Filters Cincinnati Fan OEM Blowers, Centrifugal Fans, Industrial Fans JFD Replacement Tube Bundles, Heat Exchangers Mistop Moisture Eliminators Replacement & Retrofit Exact Replacement Coils, Fan Coil Units, Air Handling Units, Tube Bundles Sterling Gas Fired, Hydronic & Infrared Unit Heaters Swartwout Industrial Damper & Louvers, Steel Aluminum, Fiberglass Technical Systems/RAE Corp Replacement Plate Fin Heating & Cooling Coils, Custom Chillers & Pump Packages, Fluid Coolers Tek-Air Laboratory Hood & Pressurization Control, Air Flow Measuring & Isolation Room Monitoring Temprite Direct & Indirect Gas Fired Heating Units, Air Handling Units Twin City Fan & Blower Co. Centrifugal, Axial, Propeller Industrial Fans, High Pressure Blowers, Roof Ventilators

Quality Water Treatment, Inc.Quality Water Treatment, Inc. Dan Krack, J. C. Chouteau, Roger Ross, Joe Doughtery, Laura Stahlschmidt, Mary Brandt, Dennis Dickson,, John Haynes, George Brooks, Peter Gallagher, Derek Lemons 401 Withers Ave, St. Louis, Missouri 63147 PHONE 314-621-0300 FAX 314-621-0301 EMAIL sales@qwt.com WEB www.qwt.com MANUFACTURER PRODUCT DESCRIPTION A. P. Tech Solid Water Treatment Chemicals for Cooling Towers & Boilers Advantage Controls Injection Pumps, Tower & Boiler Controllers Cortec Green Chemistry for Boilers, Closed loop, Cooling Tower, Lap up Chemicals Dow Inhitited & Unihitibited Glycol Filter Specialists, Inc. Filter Housings, Bag Filters, Cartridge Filters Gunthor Water Softener Salt Interstate Chemical Inhitibited E & P Glycol, Glycol Analysis, Bulk or Drum Delivery

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J. L. Wingert Chemical Filter Feeders, Chemical By-pass Feeders, Mixers, Glycol, Feed Systems, Solid Separators, Mix Tanks, Brominators Marlo Softeners, Filters Metal Samples Corrosion Coupons & Corrosion Testing Milton Roy Chemical Pumps Injectors & Boiler Control Pulsafeeder Injectors & Boiler Blowdown Controllers Pure EarthLabs Legionella Testing Quality Water Treatment Cooling Tower, Potable, Boiler Treatment Chemicals & Service Waterlink Technologies DI, RO, Carbon Filters UV, Systems

RamAir, Inc.RamAir, Inc. Vince Reynolds, Darin Franklin, Todd Matheis, Tom Venturella, Mike Popelar, David Shaw, Kim Parker, Danielle Dempsey 2240 Cassens Drive, Fenton, Missouri 63026 PHONE 636-349-1047 FAX 636-343-1413 TOLL FREE 800-499-1047 EMAIL vince_r@ramair.com WEB www.ramair.com MANUFACTURER PRODUCT DESCRIPTION Camfil Farr 30/30 & Aeropleat Pleated Filters, Medium-High Efficiency (Riga-Flo & Durafil) Cartridge Filters, Absolute HEPA Filters, Carbon "IAQ" Filters, Bag & Roll Filters, Housings & Hardware, Bag-In/Bag-Out Housings, Activated Carbon & Air Purification Carbon Link Carbon Gas & Odor Control Filter Media, Carbon Filters Carroll Manufacturing Kitchen Exhaust Systems and Kitchen Hoods Dowdall Engineering, Inc Custom Cleanrooms and Designed Turnkey Projects NAFCO Air Compressor Air Cleaning Equipment Portafab Ceiling Grid Systems, Wall Systems & Fan Filter Units Precision Air Products Surgery Systems, Isolation Systems, Laminar Flow Diffusers, Industrial Diffusers Technical Air Products Clean Room Components and Fan Powered HEPA Modules UV Resources Ultraviolet "C-Band" Fixtures Rhodes Equipment Co.Rhodes Equipment Co. Craig Tapperson, Rick Luetkemeyer, Bill Baker, Jr. (Bill Baker, Sr-Retired) 5922 Hampton Ave., St. Louis, Missouri 63109 PHONE 314-353-2463 FAX 314-351-1569 Www.rhodesequipment.com MANUFACTURER PRODUCT DESCRIPTION Adsco Expansion Joints - Slip & Bellows Bergen Power/Carpenter Pipe Hangers & Supports Patterson Coen Co., Inc. Burners, Scanners, Igniters, Burner Management Cooling Tower Depot Field Erected, Wood/FRP, Parts English Boiler Water Tube Boilers Hyspan-Barco Ball Joints, Swivel Joints, Venturis Magtech Magnetic Level Gauges Perma-Pipe Pre-Insulated Piping Systems Proco Expansion Joints, Rubber & Teflon Tri State Industries Pipe Guides, Pre-Insulated Pipe Slide/Guides Yarway Blowdown Valves, Pump Protection Valves, Gauges, Water Columns, Steam Traps

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Rollie Johnson, Inc. (RJI)Rollie Johnson, Inc. (RJI) Ted Lembeck, Chuck Ruedebusch, Cris Meyer, Dave Zimmerman, Dave Ihler, Mary Nolting, Karen Guehne, Don Lauer, Larry Schreiber, Chris Swallow, Regina Alberts, Allan Atkins 221 Chesterfield Industrial Blvd., Chesterfield, Missouri 63005 PHONE 636-532-1050 FAX 636-532-5464 TOLL FREE 800-444-8470 WEB rji-sales.com MANUFACTURER PRODUCT DESCRIPTION AbsoluteAire Gas Fired Make-up Air & Space Heating Aerosonics Sound Control Products, Acoustical Fan Housings Air Distribution Concepts Fabric Air Distribution Duct Air Monitor Air Flow Measuring Stations & Control Systems Amana Thru the Wall Air Conditioners & Heat Pumps (PTAC) APC-Network Air (Airflow) Self Contained, Ceiling & Floor Mount Units, 1-30 Tons ATCO Flexible Air Duct & Accessories Blender Products, Inc. Air Stratification Eliminators Canatal Ceiling & Floor CRACS CirculAire Chemical Air Purification Potassium Permanganat & Carbon Climate Craft Custom Air Handling Equipment COSA/TRON Electronic Air & Odor Purification Systems Cutler Hammer (EATON) Variable Frequency Drives Dectron, Inc. Dry-O-Tron Dehumidifying Heat Pumps for Indoor Swimming Pools Dustex Dust Collecting Equipment, & Product Recovery Cyclone Econ Air Kitchen Ventilation System, UL Water Wash Hoods First Co (AE-Air) Fan Coils, AHU's & Cabinet Unit Heaters Flowsafe Constant Volume Low Flow Fume Hoods & Lab Controls Friedrich PTACS & VTACS Ductless Splits General Electric Variable Frequency Drives Hays Fluid Controls Automatic Flow Control Heat Pipe Technology Heat Pipes, Wrap Around & Standard Configuration Herrmidifier Co., Inc. Humidifiers All Types, Including Live Steam, Steam Generators, Atomizing Spray Indeeco Duct Heaters, Wall, Baseboard Units & Cabinet Innovent Packaged DX Systems with Energy Recovery - Air Cooled and Water Cooled Equipment Jackson & Church Gas & Oil Industrial Heating & Ventilating Equipment Koldwave Portable Air Conditioning Units For Rent - For Sale Leader Industries Fire & Smoke Dampers Leading Edge Air Curtains, Ceiling Fans Lennox Packaged Rooftop Systems with DDC Controls (up to 50 tons) Louvers & Dampers Dampers, Louvers, Sound Control Products, Gravity Vents MultiStack Modular Chillers, Air & Water Cooled, Turbocor Technology Rawal Valve Special Dehumidification Valve Rickard Variable Volume Diffusers Rosemex Fan Coils, AHU's Hydronic Unit Heaters, Convectors Schwank Gas Infra-Red Heaters Semco Heat Recovery Wheel Systems and Chilled Beam Technology Sterling Indirect Gas Fired Products, Unit Heaters & Roof Tops Stulz Desiccant Wheel Dehumidification Systems Stulz-ATS Ceiling & Floor Computer Room Air Conditioning Equipment Super Radiator Coils Commercial & Industrial Coils Trion Air Quality Products-Dust Collections, Kitchen Hood Scrubbers Trox Under Floor VAV Air Diffusers & Fan Terminal Units Tuttle & Bailey Grilles Registers & Diffusers-Air Terminals (VAV's & FTU's) Twin City Fan Commercial Ventilation and Supply Fan Systems Valent Packaged Rooftop Systems, 100 % OA units with Neutral Air Capabilities Water Furnace Water Source Heat Pumps

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St. Louis Boiler Supply Co.St. Louis Boiler Supply Co. Gerard Eisele, Robert H. Eisele, Curt Meyer, Jeff Glass, David Schwegel, Brad Baerveldt, John Alber, Donna Dopuch, Rich Kluempers, Craig Hopkins, Gerard Eisele II, Robert Schopper, Anne Eisele, Nick Backs, Ginny Eisele, Brad Hobbs 617 Hanley Industrial Court, St. Louis, Missouri 63144 PHONE 314-962-9242 FAX 314-968-4356 TOLL FREE 800-BOILERS (800-264-5377) EMAIL INFO@STLBOILER.COM WEB www.STLBOILER.com MANUFACTURER PRODUCT DESCRIPTION Alkota Cleaning Systems Pressure Washers & Accessories Amtrol, Inc. Expansion Tanks & Hydronic Specialties Antunes Controls Gas Pressure Switches, Air Pressure Switches, Temperature Controllers Armstrong Hot Water Heating Circulators Asco General Gas-Water Hot Water & Steam Solenoid Valves ASCO TriPoint Pressure & Temperature Switches Bacharach Combustion Analyzers, Testing & Measurement Instruments Belimo Valves, Controls Bell & Gossett Centrifugal Pumps BFS Industries Boiler Feed Systems, Oil Heating Systems, Deaerators Conbraco Industries, Inc. Safety Relief Valves, Backflow Preventers, Gauge Glass Sets Dongan Ignition Transformers Dunham Bush/Mepco Centrifugal Pumps, Steam Traps, Radiator Valves Durabla Mfg. Co. Check Valves Dwyer Instruments, Inc. Pressure, Temperature & Level Controls Everlasting Valves Quick & Slow Opening Blowdown Valves, Butterfly Valves

Fabtek Aero Specializing in Stainless Steel Condensate & Boiler Feed Tanks Field Controls Draft Inducers Fireye Flame Safeguard Controls & Accessories Flomatic Backflow & Butterfly Valves Grundfos Boiler Feed Pumps Centrifugal & Boiler Feed Grundfos Pump Pumps Hay Fluid Controls Solenoid Valves Hays/Cleveland Air Switches, Indicators, Recorders, Valves, Actuators, Oxygen Trim Systems HB Smith Cast Iron Boilers Hoffmann Steam Specialties Honeywell, Inc. Boiler Controls, Modular Motors, Gas Valves, Actuators, Flame Safeguard Hydrotherm Modular Boiler Systems, Residential Boilers, High Affiance Boilers Industrial Combustion Burners & Boilers ITT General Gas Valves, Actuators, Solenoid Valves ( See ASCO General) Leslie Controls Steam Control Valves & Instantaneous Water Heaters Magnatrol 2 Way Solenoid Valves Maxitrol Co. Gas Pressure Regulators & Selectra Temperature Controls McDonnell & Miller Boiler Controls, Pump Controls, Flow Switches Ray Burner Gas & Oil Burners RBI Water Heaters, Pool Heaters & Boilers, High Efficiency Boilers Reotemp Gauges & Thermometers Siemens Valves, Actuators, Thermostats & Pneumatic Controls Spence Pressure Reducing Valves TACO, Inc. Hydronic Specialties, Circulators Testo Combustion Analyzers Thomas C. Wilson Tube Cleaning Systems Tjernlund Draft Inducers Topog-E Molded Rubber Handhole & Manway Gaskets Trerice Gauges & Thermometers

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Watson McDaniel Steam Tramps Watts Water, Steam Relief Valves Webster Heating Products Oil Pumps Winters Gauges & Thermometers H.C. Sharp Co.H.C. Sharp Co. Jerry Haas, Mike Haas, Sandy Corner, Mark Haas, Patty Pona, Dean Reeves, Dale Kitchen, Dave Haas, Jackie Corner, Mike Leible 8301D Crest Industrial Dr., St. Louis, Missouri 63123 PHONE 314-351-6900 FAX 314-351-6901 EMAIL hcsharpco.com WEB www.hcsharpco.com CAPE GIRARDEAU-OFFICE Dean Reeves 1000 Summit Ridge Cape Girardeau, Missouri 63701 PHONE 573-651-4200 FAX 573-651-1841 MANUFACTURER PRODUCT DESCRIPTION Airtite Radiant Ceiling Panels Armstrong Monitoring Monitors & Detectors, CO/CO2/Refrigerant Curbs Plus Adapters, Equipment Rails & Supports, Metal Bldg Curbs Essick Evaporative Coolers GE Replacement Thru-The-Wall Window Units & Packaged Terminal GE Zoneline Air Conditioners Greenheck Blowers, Heating, Ventilating, Material Handling, Commercial & Industrial Exhaust Fans, Louver, Shutters, Control Dampers, Smoke/Fire Dampers, Access Doors, Make Up Air Kitchen Hoods, Laboratory Exhaust Systems Marcraft Custom Air Handling Equipment, Energy Recovery & Heat Recovery Mars Air Curtains McGill Airflow Products Sound Attenuators, Double Wall Acoustical Panels, Fliberglass Duct, Spiral Pipe-Fittings Metal*Aire Grilles, Registers, Diffusers, VAV Terminals Milcor, Inc. Drywall Access Doors Modine Duct Furnaces Neptronics Humidifiers, Control Valve Actuators Pate Prefab Curbs, Pipe Portals, Equipment Supports Roof, Equipment & Metal Bldg Curbs & Pipe Portals Polar Automotive& Industrial Paint Booths Raywall Commercial Electric Heat, Baseboard, Cabinet Unit Heaters Samsung Ductless Split Systems Seasons-4 Custom Rooftop HVAC Equipment and Coils Temtrol Coils Chilled & Hot Water Coils Vulcan Radiator Corp. Hydronic Fin Tube, Electric Fin Tube Convectors, Cabinet Unit Heaters Warren Electric Duct Heaters Weather Rite Make-Up Air & Heating Systems to 400,000 CFM Williams Fan Coil Units, Air Handlers, Vertical Stack Fan Coils

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Siemens Building TechnologiesSiemens Building Technologies St. Louis Chris Pelton, Steve Wuennenberg, Mark Sneller, Lee Harper, Monty Gossen, Shelley Carroll 2320 Ball Drive, St. Louis Missouri 63146 PHONE 314-567-5570 FAX 314-567-5840 WEB www.us.sbt.siemens.com Central Illinois Scott Schuetz, Rob Bond 14 Currency Drive Bloomington, Illinois 61704 PHONE 877-454-8992 FAX 309-664-2466 MANUFACTURER PRODUCT DESCRIPTION Siemens Building Automation, Energy management, Temperature Controls, Security, CCTV, Fire Alarm, Utility Metering

State Mechanical Services, IncState Mechanical Services, Inc Lin Morgan, Bob Skala, Rick Jones, Jack Meyers, Linda Jones, Peggy Grissom, Jan Fadler 10510 Lackland Road, St Louis, Missouri 63114 PHONE 314-427-8177 FAX 314-428-1057 EMAIL lmorgan@statemech.com MANUFACTURER PRODUCT DESCRIPTION Airgas (Laroche) Bulk Ammonia Baltimore Aircoil (BAC) Condensers, Evaporators, Control Panels Bohn Refrigeration Systems CAMCO Compressor Oil, Pump Oil Cornell Ammonia Pumps & Parts Crown/Tonka Walk-In Coolers & Freezers Eaton Variable Frequency Drives & Commissioning FES Compressor Parts Genesis Ammonia & Freon Leak Detectors, Control Panels H A Phillips Pressure Vessels, Control Valves Hansen Technologies Ammonia Hand Valves & Controls, Purgers, Ammonia Pumps, Relief Valves Henry Ammonia Valves Krack Corp Refrigeration Systems, Ammonia Evaporators Manning Systems Ammonia & Freon Leak Detectors Mueller Plate & Frame Heat Exchangers, Chillers Munters Desiccant Dehumidifiers Mycom Compressors & Parts Refrigerating Specialties Ammonia Hand Valves & Controls, Purgers, Relief Valves Shank Ammonia Hand Valves & Relief Valves Statemech Refrigerant Conversions, Refrigerant Recovery, Back Flow Devices & Testing Vilter Compressor Parts York

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E.J. Taff Sales Co., Inc.E.J. Taff Sales Co., Inc. Patrick Taff, Beverly Taff P. O. Box 706, O'Fallon Missouri 63366 PHONE 636-379-2962 FAX 636-379-5980 EMAIL prtaff@centurytel.net MANUFACTURER PRODUCT DESCRIPTION Airtherm Fan Coil Units, Cabinet/Unit Heaters & Convectors CoolAir Int'l PTAC & Ductless AC Units Dell Electric Duct Heaters Electromode Horizontal, Vertical, Cabinet & Baseboard Heaters Commercial & Industrial Grade Marvair Self Contained Heat Pump & AC Units Peco Special Electronic/Digital Thermostats Slant Fin Commercial and Residential Boilers and Finned Tube Radiation TayCon Building TechnologiesTayCon Building Technologies John McVey, James Moore, Kelly McVey, Michelle Whitrock, Art Koch, Dan McVey, Teri Bennett, Matt Cafazza 521 Madison St., St. Charles, Missouri 63301 PHONE 636-940-2370 FAX 636-940-2694 EMAIL jmcvey@tayconstl.com MANUFACTURER PRODUCT DESCRIPTION Honeywell DDC Controls & Energy Management KMC Controls DDC Temperature Control Systems, Energy Management & Building Automation Systems, Power Monitoring Equipment Electric & Pneumatic Controls, Control Valves Thermal Mechanics, Inc.Thermal Mechanics, Inc. Mark Brenner, Wayne Nenninger, Dave Rich, C J Hof, Kevin Krimmel, Rob Vorel, Mike Boyle, James Ertel, Jim Fahrenhorst: Outside Sales 715 Goddard Ave., Chesterfield, Missouri 63005 PHONE 636-532-1110 FAX 636-532-7318 WEB www.thermalmechanics.com MANUFACTURER PRODUCT DESCRIPTION Acme Engineering & Mfg. Full Line of Fans, Blowers & Ventilators Addison Roof Top Units, Make Up Air Systems Alerton Technologies, Inc. Direct Digital Controls AMBI-RAD Infra-red Heating Systems American Air Filter PTAC's, HW, CW, DX, Self-Contained and Water Source Unit Ventilators. Artic Chill Chilling Systems For MRI, CT Scanner Medical & Other Unique Applications Berner Air Curtains & Fabric Ductwork CDI Dessicant Drying Applications, Make-Up Air, Neutral Air Applications Engineered Industrial Desiccant Dehumidifiers Daikin AC Residential & Commercial Split AC Products, VRV Systems (Energy & Heat Pump - Both Air & Water Coolers) Dri Steam Humidifier, Co. Steam Humidification Systems Epsilon Boiler, Chiller, Tower, Pump Packaged Physical Plants Custom Designed, Controlled & Factory Built Flow Design, Inc. Sweat, Thread, Grooved, Flanged 1/2" to 8" Automatic Flow Control Valves Adjustable Balancing

Valves, Self Balancing Hose Kit Assemblies Governair (CES Group) Custom AHU & Penthouses Heat Harvester Air Source, Water Source, Aggressive Environments, Geothermal Huntair (CES Group) Custom Air Handler with Totally Unique Fan Wall Technology IEC International Environmental Horizontal, Vertical, Stacked, Fan Coils (Standard & Custom) Industrial Acoustics Co. Seismic curbs & vibration control equipment, seismic restraint hardware, seismic & acoustical design assistance Kees Specialty Air Distribution & Air Handling Products, Security Grilles, Access Doors, Air Blenders Larkin Industries Kitchen Ventilation Systems Mammoth (CES Group) Custom RTU's, Penthouses WSHP's, EVAP Chiller & Condensers, Custom Hi Side Product, Replacement Multizones Water Source heat Pumps, Exact Fit Replacement Units Markel Electric Heating Products, Finned Tube, Convectors, Unit Heaters Fan Powered Parallel & Series Boxes, Reheat & Standard Boxes McQuay Chillers, Air Handlers, Coils, Fan Coil Units, Condensers, Condensing Units, Water & Air Cooled Reciprocating, Screw & Centrifugal Chillers, Industrial Heat Pumps, Commercial & Engineered Roof Mounted HVAC Units (Previous Singer, Climate Control & McQuay Incre mental Thru Wall Air Conditioners & Heat Pumps; Water Source Heat Pump Equipment & Systems; Energy Management Systems Nailor Fire Dampers, Smoke Dampers, Control Dampers, Fire Rated Diffusers, Air Distribution Products, Air Terminal Units, Under Floor Air Systems Products, High Efficiency Fan Coils Runtal Hydronic, Aesthetically Appealing Convectors & Linear Fin Tube Radiators Seresco Compressorized Custom, Pool Dehumidification & Conditioning Steril-Aire Ultraviolet "C-Band" Decontamination Fixtures Tower Tech Custom Fiberglass Cooling Towers United Cool Air Make-Up Air, Custom A/C Products, Computer Room Units Venmar Energy Recovery Ventilators Venmar (CES Group) Total Energy Recovery Units, Pool Conditioning Units, Custom Air Handling Units Ventrol (CES Group) Semi-Custom Welded Frame Air Handling Units with Fan Wall Technology Webco (CES Group) Custom AHU with Fanwall Technology, Self Contained Penthouses Trabue Industrial SystemsTrabue Industrial Systems Sales: Greg Slack, Mike Potter, William Wieman; Mark Munie, Service: Eric Walker, Don Schulze, Mike Mcardle, Zach McCullough, Kelly Walls, Brandon Steinhart 533 Lafayette Avenue, St. Louis, Missouri 63119 PHONE 314-968-1177 FAX 314-968-7927 Tim Dietrich, Dave Underhill Dan Smidt, Lonnie Stringer 11884 W 91st Street 1840 1/2 Fuller Rd Overland Park, Kansas 66214 W. Des Moines, Iowa 50265 PHONE 913-888-4672 PHONE 515-223-9034 FAX 913-888-9562 FAX 515-223-8984 MANUFACTURER PRODUCT DESCRIPTION Cannon Economizers & Feed Water Heaters

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Cleaver Brooks Gas Boilers, Electric Boilers, Deaerators, Boiler Feed Systems, Water Softeners Condensing Type Firetube Boilers, PLC Bused Flame Safeguard Systems, Micro Processor Based Water Level Control High Efficiency Vertical Fire Tube Steam Boiler Everlasting Valves Boiler Blowdown Valves Flo-Fab Inc. End Suction, Vertical & Inline Pumps, Air Separators, Expansion Tanks, Plate & Frame Heat Exchangers, Shell & Tube Heat Exchangers, Glycol Feed Systems, VFD'S, Gauges & Thermometers HT Pump Specialties Boiler Feed & Condensate Systems & Cast Iron Deaerators Marlo Water Softeners, Dealkalizers, Reverse Osmosis Natcom Div of Cleaver Brooks Ultra-Low Nox Burners For Boilers & Process Nebraska 10,000-250,000 LB/HR Saturated & Super Heat Gas/Oil Fired D, O, A Style Penn Separator Blowdown Separators, Flash Separators, Moisture Separators, Exhaust heads, Silencers, Sample Coolers Van Packer Positive Pressure Breeching & Stacks for Boilers, Engine Generators, Grease Duct Weil Mc Lain Cast Iron Boilers TraneTrane Randy Krampe, John Dorn, Bob Halsey, Herb Krupp, Scott Hunke, Jon Fair, Nancy Jenkiinson, Dennis Goodwin, Mike Rolfes, Kathy Corso, Paul Oblein, Shawn Kitchen, Scott Lucykow, Mike Leible, Paul Quatmann, Scott Hardwick, Joe Zweifel, Dan Crooks, Bill Bourne, Ron Reimer, John Weber, Amy Francis, Loretta Turley, David Hartmann, Debbie Suntrup, Aaron Eilers, Sue Dressel, Scott Eversgerd, Peter Vas, Theresa Edris 101 Matrix Commons Drive, Fenton, Missouri 63026 PHONE 636-305-3600 FAX 636-349-0601 SERVICE OFFICE CAPE GIRARDEAU Tom Curcio Kathy Gaulding 101 Matrix Commons Drive 1078 Wolverine #D Fenton, Missouri 63026 Cape Girardeau, Missouri 63701 PHONE 636-343-9200 PHONE 573-334-0591 FAX 636-343-0463 FAX 573-334-0680 MANUFACTURER PRODUCT DESCRIPTION Annexair Energy Recovery Systems, Make-Up Air Units, Packaged Systems with Wheels, Plates and Heat Pipes Calmac Ice Storage Canarilis HVAC Packaged Pumping Systems Carel Humidifiers EDG Electrodynamic Air Cleaners EVAPCO Cooling Towers, Evaporative Condensers, Evaporative Coolers Filtrine Chillers Lakos Separators Cooling Tower Filters, Centrifugal Separator Motivair Custom Pumping Skids, Specialty Air Cooled Chillers, Dry Coolers Movin Cool Spot Coolers Pool Pak Pool HVAC Systems Temspec TMI Custom Systems Indoor & Outdoor Custom Air Handlers for Commercial Health Care & Industrial Applications Trane Commercial & Industrial Air Conditioning, Heating & Refrigeration Equipment, Custom Built Air Units/AoH

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R.R. Waites Co. Inc.R.R. Waites Co. Inc. Jeff Gass, John Waites, Jim LaVenture, Karen Durham, Kevin Muendlein 901 Horan Drive, Suite 100, Fenton Missouri 63026 PHONE 636-349-8100 FAX 636-349-8181 TOLL FREE EMAIL WEB www.waitescoinc.com MANUFACTURER PRODUCT DESCRIPTION American Air Filter HEPA, Hi Efficiency Bags, 30% Pleated Filters, Dry & Wet Dust Collectors Chicago Blower Centrifugal and Axial Fans Clean Room Technologies Clean room, Walls, Benches, Components, Design & Installation Contamination Technology Co Contaminated Air Filtration Exhaust Systems, Bag- (CTC) In/Bag-Out Housings, Activated Carbon & Clean Air Solutions Kirk & Blum Quick Clamps, Duct & Fittings Nederman, Inc. Source Capture Systems for Fume, Particulate & Vapor

Paragon Controls Air Flow Measurement PortaFab Clean Room Wall and Ceiling Systems, Modular In Plant Building Purafil, Inc. Gas & Odor Control Filters, Self Contained Filter Units

Spencer Turbine Industrial Central Vacuum Systems-Pressure Blowers, Gas Booster Spring Air Systems Kitchen Exhaust Systems Strion Air High Efficient Low Pressure Drop Mechanical Freon Tox-Alert Carbon Monoxide, Refrigerant & Other Gas Monitoring Systems United Air Specialists Electrostatic Precipitators, Cartridge Collectors, Cyclones

Viledon High Efficient Low Pressure Drop, Synthetic Non-Woven Media Filters

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Product Manufacturer Advertiser

A C Equipment AAON Inc. AC Systems, Inc. American Standard Residential Crescent Parts & Equipment Co., Inc. Frigidaire Mechanical Supply Co., Inc. McQuay Thermal Mechanics, Inc. Trane Trane York Int. Corp. Engineered Thermal Systems, Inc. A C Equipment Ductless Mini-Splits Mitsubishi Electric Mechanical Supply Co., Inc. A C Equipment, Custom Seasons-4 H.C. Sharp Co. A C Roof Top York Int. Corp Engineered Thermal Systems, Inc. A C, Roof Top McQuay Thermal Mechanics, Inc. A.C. Roof Top Seasons-4 H.C. Sharp Co. Aboveground Hydronic Piping Rovanco Piping Debco Equipment Co., Inc. (232113.23) Aboveground Steam and Condensate Rovanco Piping Debco Equipment Co., Inc. (232213.23) AC Equipment GE H.C. Sharp Co. Mammoth Mechanical Supply Co., Inc. Seasons-4 H.C. Sharp Co. AC Equipment Evaporative Condensing Seasons-4 H.C. Sharp Co. Packaged RTU AC Equipment Make-Up Air Seasons-4 H.C. Sharp Co. Access Doors MilCor Gaus-Scott Co. Access Panels Cierra Products Gaus-Scott Co. Acoustic Air Plenums Dynasonics Gaus-Scott Co. Actuators Barber-Coleman Controlco Inc. Belimo C & C Group, Inc. Belimo Controlco Inc. Honeywell Controlco Inc. Invensys Controlco Inc. Johnson Controls Controlco Inc. Siemens Controlco Inc. TAC Controlco Inc. Actuators, Control Valve Neptronics H.C. Sharp Co. Adhesives Kinco Adhedisive Cape Winair Co. Air Blenders Kees Thermal Mechanics, Inc. Air Cleaners Honeywell Crescent Parts & Equipment Co., Inc. Air Cleaning Equipment American Air Filter R.R. Waites Co. Inc. Camfil Farr RamAir, Inc. COSA/TRON Rollie Johnson, Inc. (RJI) Purafil, Inc. R.R. Waites Co. Inc. Air Coils Engineered Air Engineered Air Trane Trane Air Coils Electric Duct Heaters (23 82 Tutco Langendorf Supply Co., Inc. 16) Air Conditioners Armstrong Air Commercial Cape Winair Co. Koldwave Mead O'Brien, Inc. Mitsubishi Electric AC Systems, Inc. Air Conditioners (238116) Mitsubishi Electric Mead O'Brien, Inc. Air Conditioners (238126) Sanyo Mead O'Brien, Inc. Air Conditioners, Room American Air Filter Thermal Mechanics, Inc. GE Cape Winair Co. GE H.C. Sharp Co. LG Cape Winair Co. McQuay Thermal Mechanics, Inc. Mitsubishi Electric AC Systems, Inc. Air Conditioners, Room (PTAC) Amana Rollie Johnson, Inc. (RJI) CoolAir Int'l E.J. Taff Sales Co., Inc. GE Zoneline H.C. Sharp Co. Air Conditioning & Heat Pumps Bard Crescent Parts & Equipment Co., Inc. Air Conditioning & Heat Pumps Thru Heat Controller Crescent Parts & Equipment Co., Inc. Wal Window Units Air Conditioning & Heating Air Unico Crescent Parts & Equipment Co., Inc. Handlers, chillers Air Curtains Berner Thermal Mechanics, Inc. Leading Edge Rollie Johnson, Inc. (RJI) Air Curtains (23 34 33) Powered Aire, Inc. Langendorf Supply Co., Inc. Ruskin Langendorf Supply Co., Inc. Air Distribution Metal*Aire H.C. Sharp Co. Nailor Thermal Mechanics, Inc. Air Duct Accessories Kees, Inc. Magary Sales, Inc. Leader Industries Magary Sales, Inc. Air Duct Accessories (23 33 00) Sheet Metal Connectors Langendorf Supply Co., Inc. Air Eliminators Spirotherm Comfort Sales Agency, Inc. TACO, Inc. Behrmann Co. Air Filters, Washable Electronic Honeywell, Inc. Commair, Inc. Equipment Air Flow Measuring & Control Air Monitor Rollie Johnson, Inc. (RJI)

34

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Ebtron Friemel-Love Co. Tek-Air Pero Sales, Inc. Air Flow Monitors Greenheck H.C. Sharp Co. Air Handler, Custom Governair Custom Product Solutions, Inc. Air Handler, Replacement Aerovent Fan Pero Sales, Inc. Air Handlers ADP Cape Winair Co. Applied Air HVAC Solutions, Inc. Asp-Div of First Co. Engineered Thermal Systems, Inc. First Co Crescent Parts & Equipment Co., Inc. Magic Aire Crescent Parts & Equipment Co., Inc. Williams H.C. Sharp Co. Air Handlers, Central Station First Co (Applied Environmental Air Rollie Johnson, Inc. (RJI) York Int. Corp Engineered Thermal Systems, Inc. Air Handlers, Custom Air Enterprises, LLC Friemel-Love Co. Airflow Equipment Company Engineered Thermal Systems, Inc. Buffalo Air Handling HVAC Solutions, Inc. Climate Craft Rollie Johnson, Inc. (RJI) Energy Labs Engineered Thermal Systems, Inc. Ingenia Engineered Thermal Systems, Inc. Marcraft H.C. Sharp Co. Temtrol Custom Product Solutions, Inc. York Int. Corp Engineered Thermal Systems, Inc. Air Handlers, Custom Energy Seasons 4 H.C. Sharp Co. Recovery Air Handlers, Custom HVAC Kees, Inc. Magary Sales, Inc. Air Handling Units Ventrol (CES Group) Thermal Mechanics, Inc. Air Handling Units, Custom Indoor & Trane Trane outdoor Air Handling Units, Modular indoor & Trane Trane outdoor Air Measuring - Instrumentation and CFM Langendorf Supply Co., Inc. Control Devices for HVAC (23 09 13) Air Measuring & Control Paragon Controls R.R. Waites Co. Inc. Air Outlets & Inlets Kees, Inc. Magary Sales, Inc. Reliable Products Magary Sales, Inc. Air Pollution Industrial American Air Filter R.R. Waites Co. Inc. United Air Specialists R.R. Waites Co. Inc. Air Purification System Strion Air R.R. Waites Co. Inc. Air Purifying Apparatus Contamination Technology Co (CTC) R.R. Waites Co. Inc. Purafil, Inc. R.R. Waites Co. Inc. Air Rotation Engineered Air Engineered Air Air Rotation Units Applied Air HVAC Solutions, Inc. Bessamaire Engineered Thermal Systems, Inc. Hastings Industries AC Systems, Inc. Temprite Pero Sales, Inc. Weather Rite H.C. Sharp Co. Air Stratification Eliminators Blender Products, Inc. Rollie Johnson, Inc. (RJI) Air Terminal Products Metal*Aire H.C. Sharp Co. Air Terminal Units Trane Trane Air Terminal Units (233319) Carnes AC Systems, Inc. Air to Air Energy Recovery Equipment Clean Air Designs Magary Sales, Inc.

Air to Air Energy Recovery Units Greenheck H.C. Sharp Co. Venmar (CES Group) Thermal Mechanics, Inc. Air Vents Armstrong Machine Works Mead O'Brien, Inc. Air/Dirt Separators Bell & Gossett Blackmore & Glunt, Inc. TACO, Inc. Behrmann Co. AL29-4C Chimney Systems (235123) Heat-Fab Behrmann Co. AMCA Certified Lab Exhaust Fans Loren Cook Langendorf Supply Co., Inc. Ammonia Valves Hansen Technologies State Mechanical Services, Inc Herl Nation-Wide Refrigeration, Inc. Refrigerating Specialties State Mechanical Services, Inc Ammonia, Bulk Airgas (Laroche) State Mechanical Services, Inc Anti-Microbial Coatings for HVAC Ducts Lindab Langendorf Supply Co., Inc. and Equipment (23 05 63) Attenuators, Sound Aerosonics Rollie Johnson, Inc. (RJI) Automatic Condensate Pump Units Shipco Pump Debco Equipment Co., Inc. (232129) Axial HVAC Fans (23 34 13) Loren Cook Langendorf Supply Co., Inc. Backflow Preventers Flomatic St. Louis Boiler Supply Co. BACnet Controls American Auto-Matrix Automation Solutions Group Reliable Controls Automation Solutions Group Bag-in/Bag-Out Housings Contamination Technology Co (CTC) R.R. Waites Co. Inc. Balancing Valves HCI Controlco Inc. Macon Balancing Behrmann Co. Baseboard (238236) Haydon Behrmann Co. Baseboard Heaters Vulcan Radiator Corp. H.C. Sharp Co.

35

Product Manufacturer Advertiser

Blowdown Equipment BFS Hughes Machinery Company Blowdown Separators Fulton Boiler Works Behrmann Co. Penn Separator Trabue Industrial Systems Blowdown Valves Everlasting Valves St. Louis Boiler Supply Co. Blowers Acme Engineering & Mfg. Thermal Mechanics, Inc. Aerovent Fan Pero Sales, Inc. Cincinnati Fan Pero Sales, Inc. Greenheck H.C. Sharp Co. Blowers, FRP Aerovent Fan Pero Sales, Inc. Blowers, Htg & Ventilating Greenheck H.C. Sharp Co. Blowers, Industrial Greenheck H.C. Sharp Co. Boiler Burner L.E.S. Inc. Behrmann Co. Boiler Controls Antunes Controls St. Louis Boiler Supply Co. Cleaver Brooks Trabue Industrial Systems Fireye St. Louis Boiler Supply Co. Heat-Timer Debco Equipment Co., Inc. Hydrolevel Co. Behrmann Co. ITT General St. Louis Boiler Supply Co. McDonnell & Miller St. Louis Boiler Supply Co. Tekmar Control Systems Comfort Sales Agency, Inc. Boiler Controls, Flame Safeguard Honeywell, Inc. Crescent Parts & Equipment Co., Inc. Boiler Economizers Heatsponge Hughes Machinery Company Boiler Feed Systems Ajax Boiler Hughes Machinery Company BFS Industries St. Louis Boiler Supply Co. Cleaver Brooks Trabue Industrial Systems Skidmore Behrmann Co. Sterling, Inc. Comfort Sales Agency, Inc. Boiler Feed Water Pumps (235313) Shipco Pump Debco Equipment Co., Inc. Boiler Venting Systems Security Chimney Midwest Machinery Co. Boiler Water Level Controls Cleaver Brooks Trabue Industrial Systems Boiler, Cast Iron (235223) Peerless Debco Equipment Co., Inc. Boiler, Deaerators (235316) Hurst Boiler Debco Equipment Co., Inc. Boiler, High Efficiency Peerless Debco Equipment Co., Inc. Boiler, Vertical Cleaver Brooks Trabue Industrial Systems Boiler, Water Tube Ajax Boiler Hughes Machinery Company Boilers Cleaver Brooks Trabue Industrial Systems Columbia Boiler Co. Comfort Sales Agency, Inc. Green Boiler Technologies-Sellers Engineering- Echelmeier Company Weben-Jarco Boilers Hydrotherm Comfort Sales Agency, Inc. Lochinvar Corp. Behrmann Co. Parker Boiler Co. Control Products, Inc. Rite Engineering Behrmann Co. Slant Fin E.J. Taff Sales Co., Inc. Smith Cast Iron Boiler Co. Comfort Sales Agency, Inc. Superior Boiler Works Comfort Sales Agency, Inc. Boilers & Water heaters Camus-Hydronics Debco Equipment Co., Inc. Patterson-Kelley Hughes Machinery Company Boilers (235239.16) L.E.S. Inc. Behrmann Co. Boilers For Humidification Dri Steam Humidifier, Co. Thermal Mechanics, Inc. Boilers, Aluminum Condensing AERCO Blackmore & Glunt, Inc. (235216.13) Boilers, Atmospheric Raypak Blackmore & Glunt, Inc. Boilers, Cast Iron Burnham Corp Crescent Parts & Equipment Co., Inc. HB Smith St. Louis Boiler Supply Co. Hydrotherm Comfort Sales Agency, Inc. Hydrotherm St. Louis Boiler Supply Co. Smith Cast Iron Boiler Co. Comfort Sales Agency, Inc. Weil Mc Lain Trabue Industrial Systems Weil McLain Mechanical Supply Co., Inc. Boilers, Cast Iron (235223) Burnham Hydronics Behrmann Co. Boilers, Chillers, and Valve Rebuilding Ware Hughes Machinery Company

Boilers, Commercial & Residential Weil McLain Mechanical Supply Co., Inc. Boilers, Condensing Ajax Boiler Hughes Machinery Company Patterson-Kelley Hughes Machinery Company RBI Comfort Sales Agency, Inc. Boilers, Condensing (235216) AERCO Blackmore & Glunt, Inc. Boilers, Condensing (235216) Peerless Debco Equipment Co., Inc. Raypak Blackmore & Glunt, Inc. Boilers, Condensing (235216.16) Camus-Hydronics Debco Equipment Co., Inc. Boilers, Condensing (235233.19) Camus-Hydronics Debco Equipment Co., Inc. Boilers, Condensing Stainless Steel Raypak Blackmore & Glunt, Inc. (235216.13) Boilers, Copper - Fin LAARS Mechanical Supply Co., Inc. Boilers, Copper Finned Tube Laars Heating Systems Midwest Machinery Co. RBI Comfort Sales Agency, Inc.

36

Product Manufacturer Advertiser

Boilers, Copper Finned Tube Lochinvar Corp. Behrmann Co. (235233.13) Boilers, copper Water Tube Raypak Blackmore & Glunt, Inc. (235233.19) Boilers, Copper-Finned Tube Patterson-Kelley Hughes Machinery Company Boilers, Electric Cleaver Brooks Trabue Industrial Systems Precision Boilers LLC Control Products, Inc. Reimers Electra Steam Comfort Sales Agency, Inc. Boilers, Electric (235213) Bryan Boilers Blackmore & Glunt, Inc. Burnham Hydronics Behrmann Co. Fulton Boiler Works Behrmann Co. Precision Boiler Behrmann Co. Boilers, Fire Tube Cleaver Brooks Trabue Industrial Systems Superior Boiler Works Comfort Sales Agency, Inc. Boilers, Fire Tube (235239.13) Burnham Commercial Behrmann Co. Boilers, Fire Tube (235239.16) L.E.S. Inc. Behrmann Co. Boilers, Fire-Tube (235239) Hurst Boiler Debco Equipment Co., Inc. Boilers, Flexible Tube Bryan Boilers Blackmore & Glunt, Inc. Cleaver Brooks Trabue Industrial Systems Boilers, Heating (235200) AERCO Blackmore & Glunt, Inc. Raypak Blackmore & Glunt, Inc. Boilers, High Efficiency Camus-Hydronics Debco Equipment Co., Inc. Cleaver Brooks Trabue Industrial Systems Heat Transfer Products, Inc. Comfort Sales Agency, Inc. Hydrotherm Comfort Sales Agency, Inc. Boilers, High Efficiency (235216.13 & Fulton Boiler Works Behrmann Co. 235219) Boilers, High Efficiency (235216.13) Lochinvar Corp. Behrmann Co. Boilers, Hot Water Lochinvar Crescent Parts & Equipment Co., Inc. Patterson-Kelley Hughes Machinery Company Boilers, Industrial Watertube Nebraska Trabue Industrial Systems Boilers, Modular Hydrotherm Comfort Sales Agency, Inc. Boilers, Package Feed Water Skidmore Behrmann Co. Boilers, Scotch Marine (235239.13) Hurst Boiler Debco Equipment Co., Inc. Boilers, Stainless Steel Condensing AERCO Blackmore & Glunt, Inc. (235216.13) Boilers, Stainless-Steel Condensing Bryan Boilers Blackmore & Glunt, Inc. (235216.13) Boilers, Steam & Hot Water (235200) Lattner Boiler Mead O'Brien, Inc. Boilers, Steel Columbia Boiler Co. Comfort Sales Agency, Inc. Superior Boiler Works Comfort Sales Agency, Inc. Boilers, Steel (235239.16) Burnham Commercial Behrmann Co. Boilers, Steel Fire-Tube (235239.16) Hurst Boiler Debco Equipment Co., Inc. Boilers, Steel Water Tube (235233.16) Bryan Boilers Blackmore & Glunt, Inc.

Precision Boiler Behrmann Co. Rite Engineering Behrmann Co. Boilers, Steel Water-Tube (235233) Babcock & Wilcox Debco Equipment Co., Inc. Boilers, Water Tube Columbia Boiler Co. Comfort Sales Agency, Inc. Parker Boiler Co. Control Products, Inc. Boilers, Water Tube (23 52 33) English Boiler Rhodes Equipment Co. Booster Systems Thrush Co. Hughes Machinery Company Boxes, Dual Duct Carnes AC Systems, Inc. Boxes, Fan Powered Carnes AC Systems, Inc. Boxes, Flexsys Underfloor VAV York Int. Corp Engineered Thermal Systems, Inc. Boxes, Mixing Carnes AC Systems, Inc. Boxes, Variable Air Volume Carnes AC Systems, Inc. Metal*Aire H.C. Sharp Co. Nailor Thermal Mechanics, Inc. Braided Metal Hose, Rubber & Teflon Twin City Hose Behrmann Co. Flexible Pipe Connectors (232113.23)

Breechings, Chimneys, and Stacks (23 AMPCO Langendorf Supply Co., Inc. 51 00) Building Automation Siemens Siemens Building Technologies Building Automation American Auto-Matrix Automation Solutions Group Honeywell Automation Solutions Group Reliable Controls Automation Solutions Group Building Commissioning TAC/Invensys/ C & C Group, Inc. Building Controls Novar Controls Midwest Machinery Co. Building Management Automation Trane Trane Systems Building Management Systems Honeywell Excel DDC Crescent Parts & Equipment Co., Inc. Johnson Controls Controlco Inc. Reliable Controls Automation Solutions Group Schneider Electric C & C Group, Inc. TAC/Invensys/ C & C Group, Inc.

37

Product Manufacturer Advertiser

Burners Cambridge Engineering Inc Cambridge Engineering, Inc. Industrial Combustion St. Louis Boiler Supply Co. Power Flame Behrmann Co. Ray Burner St. Louis Boiler Supply Co. S.T.Johnson Debco Equipment Co., Inc. Webster Engineering Comfort Sales Agency, Inc. Burners, Gas Cambridge Engineering Inc Cambridge Engineering, Inc. Power Flame Behrmann Co. Webster Engineering Comfort Sales Agency, Inc. Burners, Gas & Oil Cleaver Brooks Trabue Industrial Systems Power Flame Behrmann Co. Burners, Low Nox Power Flame Behrmann Co. S.T.Johnson Debco Equipment Co., Inc. Webster Engineering Comfort Sales Agency, Inc. Burners, Oil Low Nox Coen Co., Inc. Rhodes Equipment Co. Burners-Gas/Oil Natcom Div of Cleaver Brooks Trabue Industrial Systems Cabinet Unit Htrs, Prop Unit Htrs, wall Reddi Heat Co. Gaus-Scott Co. & Clg Htrs. Cabinet Unit Htrs, Prop Unit Htrs, Wall Berko Electric Co. Gaus-Scott Co. and Ceiling Htrs Carbon Monoxide Exhaust Systems Ventaire Gaus-Scott Co. Carbon Monoxide Monitoring Systems Brasch Mfg. Co. Commair, Inc.

Tox-Alert R.R. Waites Co. Inc. Card Access Honeywell Automation Solutions Group Ceiling Fans Leading Edge Rollie Johnson, Inc. (RJI) Ceiling Grids Portafab RamAir, Inc. Ceiling Mounted Air Handling Units Greenheck H.C. Sharp Co. Ceiling Systems Precision Air Products RamAir, Inc. Ceiling, Radiant Panels-Cooling & Airtite H.C. Sharp Co. Heating Central Vacuum Systems Spencer Turbine R.R. Waites Co. Inc. Centrifugal HVAC Fans Broan Gaus-Scott Co. Delhi Fan Gaus-Scott Co. Penn/Barry Gaus-Scott Co. Centrifugal HVAC Fans (23 34 16) Loren Cook Langendorf Supply Co., Inc. Chemical Injection Equipment J. L. Wingert Quality Water Treatment, Inc. Chilled Beams Dadanco AC Systems, Inc. Semco Inc. Rollie Johnson, Inc. (RJI) Chiller, Plants McQuay Thermal Mechanics, Inc. Chiller, Custom Packages Technical Systems/RAE Corp Pero Sales, Inc. Chillers Multi Aqua Crescent Parts & Equipment Co., Inc. Technical Systems/RAE Corp Pero Sales, Inc. Chillers & Compressors Petra Midwest Machinery Co. Chillers, Ammonia Frick Co. Electro Motion Refrigeration Chillers, Engine Driven York Int. Corp Engineered Thermal Systems, Inc. Chillers, Falling Film Mueller State Mechanical Services, Inc Chillers, Industrial Technical Systems/RAE Corp Pero Sales, Inc. Chillers, Modular Hi-Velocity Langendorf Supply Co., Inc. MultiStack Rollie Johnson, Inc. (RJI) UNICO Langendorf Supply Co., Inc. Chillers, Package McQuay Thermal Mechanics, Inc. Smardt Chillers Midwest Machinery Co. Vilter Nation-Wide Refrigeration, Inc. York Int. Corp Engineered Thermal Systems, Inc. Chillers, Process McQuay Thermal Mechanics, Inc. Technical Systems/RAE Corp Pero Sales, Inc. Vilter Nation-Wide Refrigeration, Inc. York Int. Corp Engineered Thermal Systems, Inc. Chillers, Screw McQuay Thermal Mechanics, Inc. Chillers, Specialty Air Cooled Motivair Trane Chillers, Turbocor Smardt Chillers Midwest Machinery Co. Chillers, Water & Glycol Chester-Jensen Co., Inc. Nation-Wide Refrigeration, Inc. Chimney Draft Fans (235113.13) Exhausto Behrmann Co. Circulators, Hot Water Heating TACO, Inc. Behrmann Co. Classroom Unit Ventilators American Air Filter Thermal Mechanics, Inc. Clean Room Benches, Components & Technical Air Products RamAir, Inc. Design Clean Room Diffusers Carnes AC Systems, Inc. Metal*Aire H.C. Sharp Co. Clean Room Fan Powered HEPA Technical Air Products RamAir, Inc. Modules Clean Room Walls & Benches, Dowdall Engineering, Inc RamAir, Inc. Components & Design Clean Room Walls & Benches, Clean Room Technologies R.R. Waites Co. Inc. Components & Design & Installation Clean Rooms PortaFab R.R. Waites Co. Inc.

38

Product Manufacturer Advertiser

Cleanroom Walls Portafab RamAir, Inc. Clocks Paragon Controls Cape Winair Co. Coil Run Around Air to Air Energy Engineered Air Engineered Air Recovery Units Coils Heatcraft HVAC Solutions, Inc. Temtrol Custom Product Solutions, Inc. Temtrol Coils H.C. Sharp Co. Coils, Chilled & Hot Water Temtrol Coils H.C. Sharp Co. Coils, Condenser American Coil HVAC Solutions, Inc. Coils, Cooling & Heating Aerofin Corp. Pero Sales, Inc. Marlo HVAC Solutions, Inc. McQuay Thermal Mechanics, Inc. Super Radiator Coils Rollie Johnson, Inc. (RJI) Technical Systems/RAE Corp Pero Sales, Inc. Temtrol Coils H.C. Sharp Co. York Int. Corp Engineered Thermal Systems, Inc. Coils, Cooling & Heating (238216) Coilmaster, Inc. Behrmann Co. Coils, Heating & Cooling Greenheck H.C. Sharp Co. Coils, Integral Face & Bypass Wing Co. Friemel-Love Co. Coils, Integral Face & By-pass Control Air Rollie Johnson, Inc. (RJI) Marlo HVAC Solutions, Inc. Coils, Quick Ship Temtrol Custom Product Solutions, Inc. Coils, Quick Ship Replacements Marlo HVAC Solutions, Inc. Coils, Refrigeration & Unit Coolers Bohn State Mechanical Services, Inc Krack Nation-Wide Refrigeration, Inc. Krack Corp State Mechanical Services, Inc Vilter Nation-Wide Refrigeration, Inc. Coils, Replacement Marlo HVAC Solutions, Inc. Technical Systems/RAE Corp Pero Sales, Inc. Temtrol Custom Product Solutions, Inc. Temtrol Coils H.C. Sharp Co. Coils, Steam Temtrol Coils H.C. Sharp Co. Coils, Water Temtrol Coils H.C. Sharp Co. Coli Cleaners Vapco - Garman Products Cape Winair Co. Collectors, Dust Equipment American Air Filter R.R. Waites Co. Inc. CirculAire Rollie Johnson, Inc. (RJI) Combustion Analyzers Testo St. Louis Boiler Supply Co. Combustion Analyzers Bacharach St. Louis Boiler Supply Co. Combustion and Balance of Plant Autoflame Controls Hughes Machinery Company Controls Combustion Controls Fireye Hughes Machinery Company Combustions and Balance of Plant Lipten Hughes Machinery Company Controls Commercial A/C & Heating Units American Standard Commercial Crescent Parts & Equipment Co., Inc. Compressor Parts FES State Mechanical Services, Inc Mycom State Mechanical Services, Inc Compressorized Waste Heat Recovery Heat Harvester Thermal Mechanics, Inc.

Compressors Carlyle Mechanical Supply Co., Inc. Dunham Bush Mechanical Supply Co., Inc. Compressors Parts, Compressor Mycom Nation-Wide Refrigeration, Inc. Compressors, Ammonia Mycom State Mechanical Services, Inc Compressors, Heavy Duty Ammonia Vilter Nation-Wide Refrigeration, Inc. Compressors, Refrigeration Copeland Corp. Crescent Parts & Equipment Co., Inc. Tecumseh Products Cape Winair Co. Tecumseh Products Co. Mechanical Supply Co., Inc. Vilter Nation-Wide Refrigeration, Inc. Compressors, Screw Frick Co. Electro Motion Refrigeration Mycom State Mechanical Services, Inc Vilter Nation-Wide Refrigeration, Inc. Computer Room AC Units Canatal Rollie Johnson, Inc. (RJI) Stulz-ATS Rollie Johnson, Inc. (RJI) Computer Room, A C Units Compu-Aire, Inc. AC Systems, Inc. Seasons-4 H.C. Sharp Co. Computer Room, A C Units (238123) Liebert Corp Electronic Support Systems Computer, AC Units Coolers, Spot APC-Network Air (Airflow) Rollie Johnson, Inc. (RJI) Condensers, Towers Evaporator Coils Baltimore Aircoil (B.A.C.) Nation-Wide Refrigeration, Inc. Condensate Systems Columbia Boiler Co. Comfort Sales Agency, Inc. Domestic Pump Blackmore & Glunt, Inc. HT Pump Specialties Trabue Industrial Systems Kadant-Johnson Corporation Blackmore & Glunt, Inc. Condensate Systems (232223.13) Skidmore Behrmann Co. Condensate Tanks, Boiler Feed Units Fabtek Aero St. Louis Boiler Supply Co.

Condenser, Evap-Cooled Mammoth (CES Group) Thermal Mechanics, Inc. Condensers EVAPCO Trane Condensers, Air Cooled McQuay Thermal Mechanics, Inc.

39

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Trane Trane York Int. Corp Engineered Thermal Systems, Inc. Condensers, Evaporative Baltimore Aircoil (BAC) State Mechanical Services, Inc Marley Cooling Technologies Midwest Machinery Co. Vilter Nation-Wide Refrigeration, Inc. Condensers, Evaporative & Ammonia EVAPCO Trane

Condensers, Industrial, Evaporative Frick Co. Electro Motion Refrigeration Condensers, Water Cooled Vilter Nation-Wide Refrigeration, Inc. Condensing Units Bohn Crescent Parts & Equipment Co., Inc. Bohn State Mechanical Services, Inc Krack Nation-Wide Refrigeration, Inc. Krack Corp State Mechanical Services, Inc Technical Systems/RAE Corp Pero Sales, Inc. Trane Trane Condensing Units & Systems Bohn Nation-Wide Refrigeration, Inc. Bohn State Mechanical Services, Inc Krack Corp State Mechanical Services, Inc Connectors, Flexible Flexonics Gaus-Scott Co. Mason Industries AC Systems, Inc. Metraflex Blackmore & Glunt, Inc. Twin City Hose Gaus-Scott Co. Connectors, Pump Twin City Hose Behrmann Co. Constant Air Volume Units Krueger Gaus-Scott Co. Construction Sealants Bostick AC Systems, Inc. Continuous Blowdown Heat Recovery Penn Separator Trabue Industrial Systems Control Dampers (23 09 13.43) Ruskin Langendorf Supply Co., Inc. Control Systems Reliable Controls Automation Solutions Group Control Systems, Building American Auto-Matrix Automation Solutions Group Control Valves Belimo Controlco Inc. Johnson Controls Controlco Inc. Control valves, actuators, level controls Warren Controls Hughes Machinery Company

Control, Sound Industrial Acoustics Co. Thermal Mechanics, Inc. Control, Zone System Honeywell Excel Rapid Zone Crescent Parts & Equipment Co., Inc. Controllers & Pumps for Water Advantage Controls Quality Water Treatment, Inc. Treatment Controllers, Pumps Milton Roy Chemical Pumps Quality Water Treatment, Inc. Pulsafeeder Quality Water Treatment, Inc. Controls Honeywell, Inc. St. Louis Boiler Supply Co. Honeywell/White Rodgers Cape Winair Co. ICM Controls Cape Winair Co. Johnson Controls Cape Winair Co. Controls Temperature TAC/Invensys/ C & C Group, Inc. Controls, Boiler Water Level Hydrolevel Co. Behrmann Co. Controls, DDC Alerton Technologies, Inc. Thermal Mechanics, Inc. Honeywell TayCon Building Technologies TAC/Invensys/ C & C Group, Inc. Controls, Instrumentation and Control Johnson Controls, Inc. Johnson Controls, Inc. of HVAC (230900) Controls, Instrumentation and Control Automated Logic Corp Automatic Controls Equipment Systems, for HVAC (230900) Inc. Controls, Liquid Level Hydrolevel Co. Behrmann Co. McDonnell & Miller Blackmore & Glunt, Inc. McDonnell & Miller St. Louis Boiler Supply Co. Controls, Pneumatic Barber-Coleman Controlco Inc. Honeywell Controlco Inc. Honeywell, Inc. Crescent Parts & Equipment Co., Inc. Invensys Controlco Inc. Johnson Controls Controlco Inc. Johnson Controls, Inc. Crescent Parts & Equipment Co., Inc. Siemens Controlco Inc. TAC Controlco Inc. Controls, Pressure Dwyer Instruments, Inc. St. Louis Boiler Supply Co. Controls, Pressure Temp Humidity Reliable Controls Automation Solutions Group Controls, Pressure/Temp/Humid Johnson Controls, Inc. Crescent Parts & Equipment Co., Inc. Controls, Pressure/Temp/Humidity American Auto-Matrix Automation Solutions Group Controls, Refrigeration ALCO Controls Cape Winair Co. Controls, Sequence of Operation for Automated Logic Corp Automatic Controls Equipment Systems, HAVC (230993) Inc. Controls, Temperature Barber-Coleman Controlco Inc. Barber-Colman Crescent Parts & Equipment Co., Inc. Honeywell Controlco Inc. Honeywell, Inc. Crescent Parts & Equipment Co., Inc. Invensys Controlco Inc. KMC Controls TayCon Building Technologies Reliable Controls Automation Solutions Group

40

Product Manufacturer Advertiser

Siemens Controlco Inc. TAC Controlco Inc. Trend Controls Midwest Machinery Co. White-Rodgers Crescent Parts & Equipment Co., Inc. Controls, Thermostats Peco E.J. Taff Sales Co., Inc. Controls, Time Paragon Controls Crescent Parts & Equipment Co., Inc. Controls, Water Level Hydrolevel Co. Behrmann Co. Controls, Temperature Johnson Controls Controlco Inc. Convectors Engineered Air Engineered Air Modine H.C. Sharp Co. Sterling Radiator Co. Commair, Inc. Vulcan Radiator Corp. H.C. Sharp Co. Convectors & Convection Enclosures Beacon Morris Comfort Sales Agency, Inc. Vulcan Radiator Corp. H.C. Sharp Co. Convectors (238233) Sigma, Inc. AC Systems, Inc. Convectors, Architectural Runtal Thermal Mechanics, Inc. Cooler, Spot Koldwave Rollie Johnson, Inc. (RJI) Coolers, Evaporative Essick H.C. Sharp Co. Coolers, Fluid Technical Systems/RAE Corp Pero Sales, Inc. Coolers, Portable Koldwave Rollie Johnson, Inc. (RJI) Coolers, Spot, Rental Movin Cool Trane Cooling Tower Filtration Puroflux Echelmeier Company Cooling Towers Baltimore Aircoil Co. Echelmeier Company Marley Cooling Technologies Midwest Machinery Co. Tower Tech Thermal Mechanics, Inc. Cooling Towers (236500) Cooling Tower Depot Rhodes Equipment Co. Cooling Towers (236513.13) REYMSA Behrmann Co. Corrosion Coupons Metal Samples Quality Water Treatment, Inc. Curb Adapters, Concentrics & Micrometl Crescent Parts & Equipment Co., Inc. Adhesives Curbs, Adapters Curbs Plus H.C. Sharp Co. Thy Curb Custom Product Solutions, Inc. Curbs, Equipment Rails Curbs Plus H.C. Sharp Co. Curbs, Equipment Supports Pate H.C. Sharp Co. Pate Curb Gaus-Scott Co. Roof Products & Systems Gaus-Scott Co. Curbs, Metal Building - Roof Curbs Plus H.C. Sharp Co. Pate H.C. Sharp Co. Curbs, Pre-Fab Pate H.C. Sharp Co. Curbs, Roof Curbs Plus H.C. Sharp Co. Pate H.C. Sharp Co. Thy Curb Custom Product Solutions, Inc. Curbs, Seismic Thy Curb Custom Product Solutions, Inc. Current Relays Veris Controlco Inc. Curtains, Air Dynaforce Gaus-Scott Co. Mars Gaus-Scott Co. Mars H.C. Sharp Co. Custom AHU Huntair (CES Group) Thermal Mechanics, Inc. Custom Air Handlers TMI Custom Systems Trane Custom Air Handling Units Governair (CES Group) Thermal Mechanics, Inc. Mammoth (CES Group) Thermal Mechanics, Inc. Venmar Thermal Mechanics, Inc. Webco (CES Group) Thermal Mechanics, Inc. Custom HVAC Equipment Fisen Corp Engineered Thermal Systems, Inc. Custom Indoor Central Station AHU Engineered Air Engineered Air Custom Packaged Outdoor Central Engineered Air Engineered Air Station AHU Custom Packaged Outdoor Heating & Engineered Air Engineered Air Cooling Units Custom Packaged Outdoor Heating & Engineered Air Engineered Air Vent Units Custom Water Chillers Artic Chill Thermal Mechanics, Inc. Cut-off, Low Water Hydrolevel Co. Behrmann Co. Damper Actuators Belimo Controlco Inc. Honeywell Controlco Inc. Invensys Controlco Inc. Johnson Controls Controlco Inc. Siemens Controlco Inc. TAC Controlco Inc. Damper, Actuators & VAV Controls Belimo Controls Gaus-Scott Co. Dampers Arrow United Kuhlmann Supply Co Inc Greenheck H.C. Sharp Co. Johnson Controls, Inc. Crescent Parts & Equipment Co., Inc. NCA Manufacturing Kuhlmann Supply Co Inc Dampers (23 33 13) Young Regulator Langendorf Supply Co., Inc. Dampers, Volume Control Air Balance Gaus-Scott Co. Dampers, Actuators Barber-Coleman Controlco Inc.

41

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Dampers, Air Volume Control Greenheck H.C. Sharp Co. Louvers & Dampers Rollie Johnson, Inc. (RJI) Nailor Thermal Mechanics, Inc. Pottorff Gaus-Scott Co. Dampers, Automatic Control Greenheck H.C. Sharp Co. Dampers, Balancing Greenheck H.C. Sharp Co. Dampers, Control Johnson Controls, Inc. Crescent Parts & Equipment Co., Inc. Dampers, Fiberglass Swartwout Pero Sales, Inc. Dampers, Fire Air Balance Gaus-Scott Co. Greenheck H.C. Sharp Co. Louvers & Dampers Rollie Johnson, Inc. (RJI) Nailor Thermal Mechanics, Inc. Pottorff Gaus-Scott Co. Vent Products Gaus-Scott Co. Dampers, Fire & Smoke Greenheck H.C. Sharp Co. Leader Industries Rollie Johnson, Inc. (RJI) Nailor Thermal Mechanics, Inc. Dampers, Fire, Ceiling Greenheck H.C. Sharp Co. Nailor Thermal Mechanics, Inc. Dampers, Industrial Greenheck H.C. Sharp Co. Swartwout Pero Sales, Inc. Dampers, Insulated Greenheck H.C. Sharp Co. Dampers, Smoke Greenheck H.C. Sharp Co. Hart & Cooley Crescent Parts & Equipment Co., Inc. Dampers, Utility & Industrial Greenheck H.C. Sharp Co. Dampers, Volume Control American Warming Gaus-Scott Co. Cesco Products Gaus-Scott Co. Vent Products Gaus-Scott Co. Data & Telecon Rack's Knurr Electronic Support Systems Daylight Harvesting Stentofon Dynamic Controls Inc. DDC Controls Johnson Controls Controlco Inc. Schneider Electric Dynamic Controls Inc. Deaerators BFS Hughes Machinery Company BFS Industries St. Louis Boiler Supply Co. Heatsponge Hughes Machinery Company Deaerators (235213) Burnham Commercial Behrmann Co. Deaerators (235316) Bryan Boilers Blackmore & Glunt, Inc. Precision Boiler Behrmann Co. Deaerators(235316) Shipco Pump Debco Equipment Co., Inc. Dehumidification, Desiccant Kathabar Custom Product Solutions, Inc. Dehumidification Systems Stulz Rollie Johnson, Inc. (RJI) Dehumidification, Desiccant Air Enterprises, LLC Friemel-Love Co. Bry-Air Engineered Thermal Systems, Inc. Munters State Mechanical Services, Inc Dehumidification, Swimming Pool Desert Aire Engineered Thermal Systems, Inc. Dehumidifier, Swimming Pools Pool Pak Trane Dehumidifiers Aprilaire/Research Products Crescent Parts & Equipment Co., Inc. Dectron, Inc. Rollie Johnson, Inc. (RJI) Engineered Air Engineered Air Seibu Giken (SG America) Friemel-Love Co. Dehumidifiers, Swimming Pools Dectron, Inc. Rollie Johnson, Inc. (RJI) Delta P Valve Flow Control Industries Blackmore & Glunt, Inc. Descaling Systems Sterling, Inc. Comfort Sales Agency, Inc. Desiccant AHU CDI Thermal Mechanics, Inc. Detectors, Ammonia Leak Genesis State Mechanical Services, Inc Manning Systems State Mechanical Services, Inc Detectors, Amonia leak Pure Air Technologies Nation-Wide Refrigeration, Inc. Detectors, Carbon Monoxide Armstrong Monitoring H.C. Sharp Co. Macurco Controlco Inc. Detectors, Gas Macurco Controlco Inc. Detectors, Refrigerant Brasch Mfg. Co. Commair, Inc. Diffusers, Registers, Grilles Hart & Cooley Gaus-Scott Co. Diffusers, Flowbar Architectural Metal*Aire H.C. Sharp Co. Diffusers, Registers, & Grilles (233713) Carnes AC Systems, Inc.

Diffusers, Registers, and Grilles (23 37 Lindab Langendorf Supply Co., Inc. 13) Raymond-Donco Langendorf Supply Co., Inc. Seiho Langendorf Supply Co., Inc. Thermal Core Langendorf Supply Co., Inc. Titus Langendorf Supply Co., Inc. Diffusers, Registers, Grilles Air Concepts Gaus-Scott Co. Air Guide Gaus-Scott Co. Kees, Inc. Gaus-Scott Co. Krueger Gaus-Scott Co. Reliable Products Gaus-Scott Co. Diffusers, Suction TACO, Inc. Behrmann Co.

42

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43

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Heat Pipe Technology Rollie Johnson, Inc. (RJI) Seasons-4 H.C. Sharp Co. Semco Rollie Johnson, Inc. (RJI) Spinnaker Industries Custom Product Solutions, Inc. Energy Recovery Units AAON Inc. AC Systems, Inc. Annexair Trane Energy Recovery Units-Heating & Greenheck H.C. Sharp Co. Cooling Energy Recovery, Fixed Plate Air to Renewaire Commair, Inc. Air Equipment Supports Curbs Plus H.C. Sharp Co. Evaporative Condensers Baltimore Aircoil (BAC) State Mechanical Services, Inc Recold Midwest Machinery Co. Evaporative Condensing Packaged Seasons-4 H.C. Sharp Co. Rooftop Units Evaporators Baltimore Aircoil (BAC) State Mechanical Services, Inc Bohn State Mechanical Services, Inc Krack Nation-Wide Refrigeration, Inc. Krack Corp State Mechanical Services, Inc Vilter Nation-Wide Refrigeration, Inc. Evaporators, Ammonia Baltimore Aircoil (BAC) State Mechanical Services, Inc Gebhardt Nation-Wide Refrigeration, Inc. Krack Corp State Mechanical Services, Inc Exhaust Fans Fantech Ventilation Crescent Parts & Equipment Co., Inc. Exhaust Heads Penn Separator Trabue Industrial Systems Exhaust Heads, Steel Advance Valve, Inc. Control Products, Inc. Exhaust Systems, Welding Nederman, Inc. R.R. Waites Co. Inc. Ventaire Gaus-Scott Co. Exhausters Acme Engineering & Mfg. Thermal Mechanics, Inc. Greenheck H.C. Sharp Co. Jenco Fan Kuhlmann Supply Co Inc Twin City Fan Rollie Johnson, Inc. (RJI) Twin City Fan & Blower Co. Pero Sales, Inc. Expansion Joints Advanced Thermal Systems Hughes Machinery Company Fabric Air Dispersion Air Distribution Concepts, Inc AC Systems, Inc. Fabric Air Distribution Devices (23 37 Duct Sox Langendorf Supply Co., Inc. 16) Fabric Duct Fabric Air Gaus-Scott Co. Fabric Duct Systems Air Distribution Concepts Pero Sales, Inc. Hero Gaus-Scott Co. Facility Energy Manufacturing American Auto-Matrix Automation Solutions Group Systems Reliable Controls Automation Solutions Group Facility Fuel Oil Piping Leak Detection PermAlert Langendorf Supply Co., Inc. (23 11 13) Facility Fuel-Oil Piping (231113) Rovanco Piping Debco Equipment Co., Inc. Facility Monitoring Systems Aircuity Friemel-Love Co. Fan Coil Unit, Hi-Rise Nailor Thermal Mechanics, Inc. Fan Coil Unit-Hi Rise Enviro-Tec AC Systems, Inc. Fan Coil Units Airtherm E.J. Taff Sales Co., Inc. Engineered Air Engineered Air Enviro-Tec AC Systems, Inc. First Co Rollie Johnson, Inc. (RJI) Greenheck H.C. Sharp Co. IEC International Environmental Thermal Mechanics, Inc. Magic Aire Cape Winair Co. McQuay Thermal Mechanics, Inc. Nailor Thermal Mechanics, Inc. Reznor Crescent Parts & Equipment Co., Inc. Rittling Engineered Thermal Systems, Inc. Rosemex Rollie Johnson, Inc. (RJI) Superior Rex HVAC Solutions, Inc. Trane Trane Williams H.C. Sharp Co. Fan Coil Units (23 82 19) Titus Langendorf Supply Co., Inc. Fan Coils First Co Crescent Parts & Equipment Co., Inc. Magic Aire Crescent Parts & Equipment Co., Inc. Multi Aqua Crescent Parts & Equipment Co., Inc. Fan Coils High Rise Williams H.C. Sharp Co. Fan Coils, Hi Rise Temspec Trane Fan Coils, Stacked Whalen Rollie Johnson, Inc. (RJI) Fans Acme Engineering & Mfg. Thermal Mechanics, Inc. Greenheck H.C. Sharp Co. Fans Seismic Rated Greenheck H.C. Sharp Co. Fans, Adjustable, Controllable Pitch Howden (Joy Fans) Friemel-Love Co. Fans, Axial Flow Acme Engineering & Mfg. Thermal Mechanics, Inc. Howden (Joy Fans) Friemel-Love Co.

44

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Fire Dampers (23 33 13.16 Fire Ruskin Langendorf Supply Co., Inc. Dampers) Firetube Scotch Marine Boilers Johnston Boller Hughes Machinery Company Firetube Scotch Marine Boilers & York Shipley Boilers Hughes Machinery Company

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Vertical Tubeless Boilers Fittings, Duct Specialty Metal Flexmaster AC Systems, Inc. Fittings, Tubing & Tubing Track Parker Mead O'Brien, Inc. (230900) Fixed Plate Air to Air Energy Recovery Engineered Air Engineered Air Units Fixtures, Decontamination Steril-Aire Thermal Mechanics, Inc. Flange Adapters Flow Conditioning Blackmore & Glunt, Inc. Flash Separators Penn Separator Trabue Industrial Systems Flexible Ducts (23 33 46) Thermaflex Langendorf Supply Co., Inc. Flexible Ducts (233343) Flexmaster AC Systems, Inc. Flow & Energy Metering Onicon Custom Product Solutions, Inc. Flow Metering Foxboro Mead O'Brien, Inc. Flow Switches McDonnell & Miller Blackmore & Glunt, Inc. TACO, Inc. Behrmann Co. Fluid Coolers Marley Cooling Technologies Midwest Machinery Co. Recold Midwest Machinery Co. Food Process HVAC ACUAir Electro Motion Refrigeration Force Draft Cooling Towers EVAPCO Trane Fuel fired Heaters (23 55 00) Sterling Langendorf Supply Co., Inc. Fume Capture Products Nederman, Inc. R.R. Waites Co. Inc. Fume Hood & Lab Pressurization Tek-Air Pero Sales, Inc. Controls Fume Hood & Lab Presurization American Auto-Matrix Automation Solutions Group Controls Furnaces Armstrong Air Residential Cape Winair Co. Armstrong Air Residential Cape Winair Co. Frigidaire Mechanical Supply Co., Inc. Furnaces, Duct Beacon Morris Comfort Sales Agency, Inc. Furnaces, Warm Air, Heavy Duty Jackson & Church Rollie Johnson, Inc. (RJI) Gas Boosters Spencer Turbine R.R. Waites Co. Inc. Gas Detection Equipment Critical Environment Technologies Crescent Parts & Equipment Co., Inc. Honeywell Analytics Custom Product Solutions, Inc. Gas Fired Duct Heaters (235513.16) Hastings Industries AC Systems, Inc. Gas Fired Furnaces (235416.13) Hastings Industries AC Systems, Inc. Gas Fired Heaters Cambridge Engineering Inc Cambridge Engineering, Inc. Engineered Air Engineered Air Gas Fired Make-Up Air Cambridge Engineering Inc Cambridge Engineering, Inc. Gas Fired Radiant Heaters (23 55 23) Space-Ray Langendorf Supply Co., Inc.

Gas Fired Unit Heaters (235533.16) Cambridge Engineering Inc Cambridge Engineering, Inc. Gas Infra-Red Heaters Roberts-Gordon Co-Ray Vac AC Systems, Inc. Gas Pressure Regulators(231123) Sensus Mead O'Brien, Inc. Gaskets, Molded Rubber Topog-E St. Louis Boiler Supply Co. Gas-Phase Air Filtration (23 42 00) Flanders Langendorf Supply Co., Inc. Gauges Marsh Instruments Co. Blackmore & Glunt, Inc. Reotemp St. Louis Boiler Supply Co. Trerice Control Products, Inc. Trerice St. Louis Boiler Supply Co. Vilter Nation-Wide Refrigeration, Inc. Winters St. Louis Boiler Supply Co. Winters Instruments Blackmore & Glunt, Inc. Gauges, Compound Weiss Instruments Behrmann Co. Gauges, Pressure Weiss Instruments Behrmann Co. Gauges, Thermometers Trerice, Weksler Mead O'Brien, Inc. Winters Instruments Blackmore & Glunt, Inc. Geothermal Heat Pumps Hydroheat Crescent Parts & Equipment Co., Inc. Geothermal Units Bard Mechanical Supply Co., Inc. Germicidal Strion Air R.R. Waites Co. Inc. Glass Acid Waste Piping Schott Echelmeier Company Glycol (232513) Dow Quality Water Treatment, Inc. Interstate Chemical Quality Water Treatment, Inc. Gravity Louvered Penthouse Loren Cook Langendorf Supply Co., Inc. Ventilators (23 37 23.16) Grease Duct Doors Flame Gard Gaus-Scott Co. Grease Duct Systems Metalbestos Behrmann Co. Schebler Stacks Hughes Machinery Company Grilles & Diffusers Raymon Donco AC Systems, Inc. Grilles, Registers & Diffusers, Titus Langendorf Supply Co., Inc. Terminal Units Grilles, Registers, Diffusers Hart & Cooley Cape Winair Co. Hart & Cooley Crescent Parts & Equipment Co., Inc. Metal*Aire H.C. Sharp Co. Nailor Thermal Mechanics, Inc. PRICE Industries Kuhlmann Supply Co Inc Tuttle & Bailey Rollie Johnson, Inc. (RJI) Grilles, Registers, Diffusers & Nozzles Anemostat AC Systems, Inc.

46

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Grilles, Security Anemostat AC Systems, Inc. Kees Thermal Mechanics, Inc. Metal*Aire H.C. Sharp Co. Grilles, Stainless Steel AJ Manufacturing AC Systems, Inc. Ground Source Heat Pumps Florida Heat Pump Cape Winair Co. Hangers and Supports for HVAC Gripple Langendorf Supply Co., Inc. Piping and Equipment (23 05 29) Hazardous Gas Detection & Monitoring Armstrong Monitoring Magary Sales, Inc. Equipment Heat Exchangers Ajax Boiler Hughes Machinery Company Armstrong Pumps Midwest Machinery Co. Enfab, Inc. Enfab, Inc. Graham Manufacturing, Inc. Control Products, Inc. Howe Nation-Wide Refrigeration, Inc. JFD Pero Sales, Inc. Thrush Co. Hughes Machinery Company Heat Exchangers (235713, 235716, TACO, Inc. Behrmann Co. 235719) Heat Exchangers, Domestic Water Bell & Gossett Blackmore & Glunt, Inc. Brazed Plate (223536) Heat Exchangers, Domestic Water Bell & Gossett Blackmore & Glunt, Inc. Heat (223500) Heat Exchangers, Instantaneous Cemline Blackmore & Glunt, Inc. Domestic Water (223513) Heat Exchangers, Plate Alfa Laval Echelmeier Company Graham Manufacturing, Inc. Control Products, Inc. Mueller State Mechanical Services, Inc Heat Exchangers, Shell & Tube Furlong Industrial Systems Echelmeier Company Heat Pipe Air to Air Energy Recovery Engineered Air Engineered Air Units Heat Pipes Heat Pipe Technology Rollie Johnson, Inc. (RJI) Heat Pumps Ground Water Source Florida Heat Pump AC Systems, Inc. Heat Pumps Water Source Florida Heat Pump AC Systems, Inc. Heat Pumps, Air Source Trane Trane Heat Pumps, Air to Air American Standard Crescent Parts & Equipment Co., Inc. Marvair E.J. Taff Sales Co., Inc. McQuay Thermal Mechanics, Inc. Heat Pumps, Ground Water Source Trane Trane Heat Pumps, Water Source Trane Trane Water Furnace Rollie Johnson, Inc. (RJI) Heat Pumps, Water to Air McQuay Thermal Mechanics, Inc. Heat Recovery Air Enterprises, LLC Friemel-Love Co. Greenheck H.C. Sharp Co. Seasons-4 H.C. Sharp Co. Xetex Engineered Thermal Systems, Inc. Heat Recovery (237223) AAON Inc. AC Systems, Inc. Heat Recovery Wheels Seibu Giken (SG America) Friemel-Love Co. Semco Rollie Johnson, Inc. (RJI) Heat Recovery, Air to Air ERV Systems Engineered Thermal Systems, Inc. Heat Tracing Thermon Echelmeier Company Heat Transfer Systems Thrush Co. Hughes Machinery Company Heat Wheel Air to Air Energy Loren Cook Langendorf Supply Co., Inc. Recovery (23 72 13) RenewAire Langendorf Supply Co., Inc. Ruskin Langendorf Supply Co., Inc. Heat Wheels Air to Air Energy Engineered Air Engineered Air Recovery units Heaters Air, Gas Cambridge Engineering Inc Cambridge Engineering, Inc. Heaters Instantaneous Hot Water Ace Boiler Hughes Machinery Company Heaters, Air Cambridge Engineering Inc Cambridge Engineering, Inc. Heaters, Air, AGA & ETL Absolute Aire Rollie Johnson, Inc. (RJI) Heaters, Baseboard Raywall H.C. Sharp Co. Vulcan Radiator Corp. H.C. Sharp Co. Heaters, Cabinet Beacon Morris Comfort Sales Agency, Inc. Brasch Mfg. Co. Commair, Inc. Markel Thermal Mechanics, Inc. McQuay Thermal Mechanics, Inc. Raywall H.C. Sharp Co. Rittling Engineered Thermal Systems, Inc. Rosemex Custom Product Solutions, Inc. Heaters, Cabinet Unit Sterling Radiator Co. Commair, Inc. Trane Trane Heaters, Cabinet Units Sigma, Inc. AC Systems, Inc. Vulcan Radiator Corp. H.C. Sharp Co. Heaters, Car Wash Cambridge Engineering Inc Cambridge Engineering, Inc.

47

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Heaters, Direct Fired Cambridge Engineering Inc Cambridge Engineering, Inc. Heaters, Door Cambridge Engineering Inc Cambridge Engineering, Inc. Engineered Air Engineered Air Wing Co. Friemel-Love Co. Heaters, Draft Barrier Raywall H.C. Sharp Co. Heaters, Duct Brasch Mfg. Co. Commair, Inc. Raywall AC Systems, Inc. Heaters, Duct Type Brasch Mfg. Co. Commair, Inc. Dell E.J. Taff Sales Co., Inc. Raywall H.C. Sharp Co. Heaters, Electric Raywall AC Systems, Inc. Heaters, Electric Baseboard, Wall Brasch Mfg. Co. Commair, Inc. Electromode E.J. Taff Sales Co., Inc. Markel Thermal Mechanics, Inc. Heaters, Electric, Commercial Raywall H.C. Sharp Co. Vulcan Radiator Corp. H.C. Sharp Co. Heaters, Explosion Proof Raywall H.C. Sharp Co. Heaters, Gas-Fired Hot Water Ace Boiler Hughes Machinery Company Heaters, Indirect Fired-Gas & Oil Weather Rite H.C. Sharp Co. Heaters, Infra-Red AmbiRad Kuhlmann Supply Co Inc Schwank Rollie Johnson, Inc. (RJI) Heaters, Infra-Red Gas AMBI-RAD Thermal Mechanics, Inc. Raywall Cape Winair Co. Reznor Cape Winair Co. Roberts-Gordon Co-Ray Vac AC Systems, Inc. Superior Radiant Products Comfort Sales Agency, Inc. Heaters, Kickspace Beacon Morris Comfort Sales Agency, Inc. Turbonics, Inc. Behrmann Co. Heaters, Kitchen Make-Up Air Cambridge Engineering Inc Cambridge Engineering, Inc. Greenheck H.C. Sharp Co. Heaters, Kitchen MUA Cambridge Engineering Inc Cambridge Engineering, Inc. Weather Rite H.C. Sharp Co. Heaters, Loading Dock Cambridge Engineering Inc Cambridge Engineering, Inc. Heaters, Make-Up Air Cambridge Engineering Inc Cambridge Engineering, Inc. Weather Rite H.C. Sharp Co. Heaters, Make-Up Air, Electric Reddi Heat Co. Gaus-Scott Co. Weather Rite H.C. Sharp Co. Heaters, Make-Up Air, Gas Fired Absolute Aire Rollie Johnson, Inc. (RJI) Cambridge Engineering Inc Cambridge Engineering, Inc. Reznor Crescent Parts & Equipment Co., Inc. Heaters, Make-Up Air, Steam & Hot Hastings Industries AC Systems, Inc. Water Heaters, Make-Up Air, Steam & Hot Weather Rite H.C. Sharp Co. Water, Gas, Electric Heaters, Make-Up, Electric Brasch Mfg. Co. Commair, Inc. Heaters, Make-Up, Gas Fired Weather Rite H.C. Sharp Co. Heaters, MUA Cambridge Engineering Inc Cambridge Engineering, Inc. Greenheck H.C. Sharp Co. Heaters, MUA Electric Greenheck H.C. Sharp Co. Heaters, MUA Gas Fired Greenheck H.C. Sharp Co. Heaters, MUA, Steam, Hot Water, Greenheck H.C. Sharp Co. Gas, Electric Heaters, Propeller Unit Sterling Radiator Co. Commair, Inc. Trane Trane Heaters, Steam Beacon Morris Comfort Sales Agency, Inc. Heaters, Tank Bell & Gossett Blackmore & Glunt, Inc. TACO, Inc. Behrmann Co. Heaters, Thermal Fluid American Heating Co. Hughes Machinery Company Heaters, Thermal Liquid Parker Boiler Co. Control Products, Inc. Heaters, Unit Beacon Morris Comfort Sales Agency, Inc. Cambridge Engineering Inc Cambridge Engineering, Inc. Modine Mechanical Supply Co., Inc. Reznor Crescent Parts & Equipment Co., Inc. Sterling Pero Sales, Inc. Sterling Rollie Johnson, Inc. (RJI) Heaters, Unit (238239) Sigma, Inc. AC Systems, Inc. Heaters, Unit Hot Water & Steam Wing Co. Friemel-Love Co. Heaters, Unit Hot Water & Steam Rittling Engineered Thermal Systems, Inc. Propeller Heaters, Unit, Electric Brasch Mfg. Co. Commair, Inc. Raywall H.C. Sharp Co. Heaters, Unit, Gas Fired Cambridge Engineering Inc Cambridge Engineering, Inc. Heaters, Warehouse Cambridge Engineering Inc Cambridge Engineering, Inc. Heaters, Water Laars Heating Systems Midwest Machinery Co. High Density Cooling Liebert Corp Electronic Support Systems High Efficiency Lighting Fixtures Westinghouse Langendorf Supply Co., Inc. High Velocity Ducts UNICO Langendorf Supply Co., Inc.

48

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Hood, Fume Lab Pressurization Flowsafe Rollie Johnson, Inc. (RJI) Control Hoods, Kitchen Econ Air Rollie Johnson, Inc. (RJI) Greenheck H.C. Sharp Co. Larkin Industries Thermal Mechanics, Inc. Hoods, Kitchen Make-up Air Greenheck H.C. Sharp Co. Hose Kits Hays Fluid Controls Rollie Johnson, Inc. (RJI) Hot Water Radiant Ceiling Panels Aero Tech Mfg Co. AC Systems, Inc. Humidifiers Aprilaire/Research Products Cape Winair Co. Aprilaire/Research Products Crescent Parts & Equipment Co., Inc. Carel Trane Engineered Air Engineered Air General Crescent Parts & Equipment Co., Inc. Herrmidifier Co., Inc. Rollie Johnson, Inc. (RJI) Honeywell, Inc. Crescent Parts & Equipment Co., Inc. Neptronics H.C. Sharp Co. Nortec Industries HVAC Solutions, Inc. Pure Engineered Thermal Systems, Inc. Humidifiers (238413) Armstrong Machine Works Mead O'Brien, Inc. Humidifiers, Commercial Steam Aprilaire/Research Products Crescent Parts & Equipment Co., Inc. Humidifiers, Steam, Electric, Gas, Dri Steam Humidifier, Co. Thermal Mechanics, Inc. High Pressure Atomization HVAC Fans (23 34 00) CFM Langendorf Supply Co., Inc. HVAC Gravity Louvered Penthouse Ruskin Langendorf Supply Co., Inc. Ventilators (23 37 23.16) HVAC Packaged Pumping Systems Canarilis Trane HVAC Power Ventilators Delhi Fan Gaus-Scott Co. Penn/Barry Gaus-Scott Co. HVAC Selection & Design Software HVAC Solution Behrmann Co. HVAC Solution HVAC, Pool Systems Pool Pak Trane Hydronic Filtration Products Filter Specialists, Inc. Quality Water Treatment, Inc. Hydronic Indicator Systems Flow Conditioning Blackmore & Glunt, Inc. Hydronic Monitor Behrmann Co. IAQ Products White-Rodgers Mechanical Supply Co., Inc. Ice Builders Chester-Jensen Co., Inc. Nation-Wide Refrigeration, Inc. Fafco Engineered Thermal Systems, Inc. Ice Machines Howe Nation-Wide Refrigeration, Inc. Vilter Nation-Wide Refrigeration, Inc. Ice Storage Calmac Trane Fafco Engineered Thermal Systems, Inc. Indoor Air Handling Units Greenheck H.C. Sharp Co. Indoor Central Station Air Handling Titus Langendorf Supply Co., Inc. Units (23 73 00) Indoor Direct Fired Heat & Vent Units Engineered Air Engineered Air Indoor Pool & Icerink Dehumidification Engineered Air Engineered Air Units Industrial Packaged HVAC Liebert Corp Electronic Support Systems Industrial Space Heaters Cambridge Engineering Inc Cambridge Engineering, Inc. Industrial, Municipal and HVAC Pumps American Marsh Pumps Hughes Machinery Company

Infrared Heaters Sterling HVAC Commair, Inc. Instantaneous Domestic Water Heat AERCO Blackmore & Glunt, Inc. Exchangers (223513) Isolation Room Controls, Laboratory TriaTek Langendorf Supply Co., Inc. Control systems Isolation Room Monitoring Phoenix Controls Friemel-Love Co. Tek-Air Pero Sales, Inc. Joints, Expansion Adsco Rhodes Equipment Co. Flexonics Gaus-Scott Co. Hyspan-Barco Rhodes Equipment Co. Twin City Hose Gaus-Scott Co. Joints, Expansion, Rubber Spooltype Proco Rhodes Equipment Co. Twin City Hose Behrmann Co. Kitchen Exhaust Systems Carroll Manufacturing RamAir, Inc. Spring Air Systems R.R. Waites Co. Inc. Kitchen Hoods Carroll Manufacturing RamAir, Inc. Kitchen Hoods Variable Volume Greenheck H.C. Sharp Co. Laboratory Air Flow Controls Phoenix Controls Friemel-Love Co. Laboratory Exhaust Fans Greenheck H.C. Sharp Co. Laboratory, Energy Recovery Systems Greenheck H.C. Sharp Co.

Leak Detectors Genesis State Mechanical Services, Inc Manning Systems Nation-Wide Refrigeration, Inc. Manning Systems State Mechanical Services, Inc

49

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Legionella Testing Pure EarthLabs Quality Water Treatment, Inc. Lighting Control system Lumisys Automatic Controls Equipment Systems, Liquid Coolers Engineered Air Engineered Air Liquid to Liquid Heat Exchanger Thrush Pump Debco Equipment Co., Inc. (235719) Loops, Expansion Metraflex Blackmore & Glunt, Inc. Loops, Seismic Metraflex Blackmore & Glunt, Inc. Louvers Air Balance Gaus-Scott Co. American Warming Gaus-Scott Co. Arrow United Kuhlmann Supply Co Inc Greenheck H.C. Sharp Co. Louvers & Dampers Rollie Johnson, Inc. (RJI) Pottorff Gaus-Scott Co. Swartwout Pero Sales, Inc. United Enertech AC Systems, Inc. Vent Products Gaus-Scott Co. Louvers, Acoustical Greenheck H.C. Sharp Co. Louvers, Adjustable Greenheck H.C. Sharp Co. Louvers, FEMA Grilles Greenheck H.C. Sharp Co. Louvers, Fiberglass Moffitt Corp. Gaus-Scott Co. Louvers, Hurricane/Miami Dade Greenheck H.C. Sharp Co. Louvers, Industrial Greenheck H.C. Sharp Co. Magnetic Level Indicators Magtech Rhodes Equipment Co. Make Up Air Units Sierra Fresh Air Systems Engineered Thermal Systems, Inc. Make Up Air, Packaged DX Greenheck H.C. Sharp Co. Make Up Units Sterling HVAC Commair, Inc. Make-Up Air Cambridge Engineering Inc Cambridge Engineering, Inc. Weather Rite H.C. Sharp Co. Make-Up Air (Direct & Indirect Fired) Cambridge Engineering Inc Cambridge Engineering, Inc. Greenheck H.C. Sharp Co. Weather Rite H.C. Sharp Co. Make-Up Air Systems, Gas Fired Cambridge Engineering Inc Cambridge Engineering, Inc. Make-Up Air Tubes Berner Thermal Mechanics, Inc. Make-Up Air Unit-100% Outside Air Cambridge Engineering Inc Cambridge Engineering, Inc. Htg/Clg. Make-Up Air Units Aerovent Fan Pero Sales, Inc. Bessamaire Engineered Thermal Systems, Inc. Engineered Air Engineered Air Greenheck H.C. Sharp Co. Moffitt Corp. Gaus-Scott Co. Reznor Crescent Parts & Equipment Co., Inc. Temprite Pero Sales, Inc. Trane Trane Weather Rite H.C. Sharp Co. Wing Co. Friemel-Love Co. Make-Up Air Units, Air Rotation Weather Rite H.C. Sharp Co. Make-Up Air Units, Air Rotation Units Cambridge Engineering Inc Cambridge Engineering, Inc. Make-Up Air Units, Direct Fired, Gas Weather Rite H.C. Sharp Co. Make-Up Air Units, Direct Fired, Gas Cambridge Engineering Inc Cambridge Engineering, Inc. (237339) Make-Up Air Units, Direct Fired, Greenheck H.C. Sharp Co. Indirect Fired, Electric Make-Up Air Units, Gas Fired Cambridge Engineering Inc Cambridge Engineering, Inc. Dynaforce Gaus-Scott Co. Make-Up Air Units, Heating & Cooling Cambridge Engineering Inc Cambridge Engineering, Inc. Combination Jackson & Church Rollie Johnson, Inc. (RJI) McQuay Thermal Mechanics, Inc. Make-Up Air Units, Indirect Weather Rite H.C. Sharp Co. Manufactured Mechanical Equipment Epsilon Thermal Mechanics, Inc. Rooms Metal Hose, Flexible Twin City Hose Behrmann Co. Meters, Energy Veris Automation Solutions Group Meters, Flow Hyspan-Barco Rhodes Equipment Co. Mixed Flow Fans Greenheck H.C. Sharp Co. Mixing Valves Armstrong Hot Water Group Mead O'Brien, Inc. Modular Chiller/Boiler Plants Stellar Energy systems Engineered Thermal Systems, Inc. Modular Indoor Central Station AHU Engineered Air Engineered Air Monitors Armstrong Monitoring H.C. Sharp Co. Monitors, Carbon Monoxide Armstrong Monitoring H.C. Sharp Co. Brasch Mfg. Co. Commair, Inc. Monitors, Diesel Brasch Mfg. Co. Commair, Inc. Monitors, Refrigerant Brasch Mfg. Co. Commair, Inc. Motors Fasco Crescent Parts & Equipment Co., Inc. Motors, Damper Greenheck H.C. Sharp Co. Honeywell, Inc. Crescent Parts & Equipment Co., Inc. TAC/Invensys/ C & C Group, Inc.

50

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Packaged Air Cooled Refrigerant Engineered Air Engineered Air Condensing Units Packaged Air-to-Air Energy Recovery Engineered Air Engineered Air Units Packaged Direct Fired Outdoor Hastings Industries AC Systems, Inc. Heating Only Makeup Air Units (237423.13) Packaged Direct Fired Outdoor Make Engineered Air Engineered Air Up Air Units Packaged DX Make Up Air Units Greenheck H.C. Sharp Co. Packaged Indirect Fired Outdoor Hastings Industries AC Systems, Inc. Heating only Makeup Air Units (23742.16) Packaged Indirect Fired Outdoor Make Engineered Air Engineered Air Up Air Units Packaged Outdoor Central Station Engineered Air Engineered Air AHU Packaged Outdoor Central Station Air AAON Inc. AC Systems, Inc. Handling (237413) Packaged Outdoor Heating & Cooling Engineered Air Engineered Air Make Up Air Units Packaged Outdoor HVAC Equipment Trane Trane Packaged outdoor HVAC Equipment Sterling Langendorf Supply Co., Inc. (23 74 00) Packaged Outdoor, Heating & Cooling AAON Inc. AC Systems, Inc. Makeup Air Conditioner (237423)

Packaged Pump Systems Tigerflow Behrmann Co. Packaged Rooftop Equipment Innovent Rollie Johnson, Inc. (RJI) Lennox Rollie Johnson, Inc. (RJI) Valent Rollie Johnson, Inc. (RJI) Packaged Terminal Air Conditioners Suburban Manufacturing Co. Commair, Inc. (PTAC) Packaged, Direct Fired, Outdoor Sterling Langendorf Supply Co., Inc. Heating Only MUA (23 74 23.13) Packaged, Indirect Fired Outdoor, Sterling Langendorf Supply Co., Inc. Heating Only MUA (23 74 23.16) Paint Booth Weather Rite H.C. Sharp Co. Paint Booth Make-Up Air Heaters Cambridge Engineering Inc Cambridge Engineering, Inc. Engineered Air Engineered Air Weather Rite H.C. Sharp Co. Paint Booths Polar H.C. Sharp Co. Particulate Air Filtration (23 41 00) Flanders Langendorf Supply Co., Inc. Parts, Compressor FES State Mechanical Services, Inc Mycom State Mechanical Services, Inc Vilter State Mechanical Services, Inc York Nation-Wide Refrigeration, Inc. York State Mechanical Services, Inc Pete's Plugs Peterson Equipment Company Blackmore & Glunt, Inc. Physical Water Treatment VRTX Echelmeier Company Pipe & Fittings Snap-Rite Cape Winair Co. Pipe Guides Tri State Industries Rhodes Equipment Co. Pipe Hangers & Supports Bergen Power/Carpenter Patterson Rhodes Equipment Co. Pipe Portals Pate H.C. Sharp Co. Pipe, Pre insulated Systems Rovanco Piping Debco Equipment Co., Inc. Pipe, Pre-Insulated Systems Perma-Pipe Rhodes Equipment Co. Piping Packages HCI Controlco Inc. Plate & Frame Heat Exchangers Mueller State Mechanical Services, Inc Plate Heat Exchangers (235719.13) Sondex, Inc. Behrmann Co. Plate Heat-Exchangers, Chillers Mueller Nation-Wide Refrigeration, Inc. Pneumatic Controls Andover Continum Dynamic Controls Inc. Siemens St. Louis Boiler Supply Co. Pool Conditioning Units Venmar Thermal Mechanics, Inc. Pool Dehumidification System Seresco Thermal Mechanics, Inc. Pool Heaters RBI St. Louis Boiler Supply Co. Portable A C Units Spot-Cooler Electronic Support Systems

51

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Portable AC Units Ocean Aire Mead O'Brien, Inc. Power Burner for Boiler and other Limpsfield Burners Hughes Machinery Company select applications Power Metering APC Dynamic Controls Inc. Pre Assembled Piping Packages Flow Design, Inc. Thermal Mechanics, Inc. Pre-Insulated Pipe Slide-Guides Tri State Industries Rhodes Equipment Co. Press, Temp Switches ASCO TriPoint St. Louis Boiler Supply Co. Pressure Blowers Spencer Turbine R.R. Waites Co. Inc. Pressure Powered Condensate Pumps Armstrong International Behrmann Co. (232223.23) Pressure Reducing Valves Spence St. Louis Boiler Supply Co. Pressure Vessels H A Phillips State Mechanical Services, Inc Pressure Washer Alkota Cleaning Systems St. Louis Boiler Supply Co. Pressure-Powered Steam Condensate Shpco Pump Debco Equipment Co., Inc. (232223.13) Process & Medical Chillers Filtrine Trane Process Air Heaters Cambridge Engineering Inc Cambridge Engineering, Inc. Process Refrigeration Technical Systems/RAE Corp Pero Sales, Inc. Pump & Hydronic Specialty Flo-Fab Inc. Trabue Industrial Systems Pump Isolation Mason Industries AC Systems, Inc. Pump, Circulators WILO Mechanical Supply Co., Inc. Pumping Systems, Packaged Bell & Gossett Blackmore & Glunt, Inc. Systecon, Inc. Friemel-Love Co. TACO, Inc. Behrmann Co. Pumps American Turbine Midwest Machinery Co. Armstrong St. Louis Boiler Supply Co. Armstrong Pumps Midwest Machinery Co. Grundfos St. Louis Boiler Supply Co. Grundfos St. Louis Boiler Supply Co. Patterson Pumps Echelmeier Company Pumps, Ammonia Cornell State Mechanical Services, Inc Hansen Technologies State Mechanical Services, Inc Pumps, Base Mounted, Centrifugal Bell & Gossett Blackmore & Glunt, Inc. Hydronic (232123.16) Pumps, Boiler Feed Columbia Boiler Co. Comfort Sales Agency, Inc. Grundfos Pump St. Louis Boiler Supply Co. MEPCO (Dunham-Bush) Control Products, Inc. Skidmore Behrmann Co. Sterling, Inc. Comfort Sales Agency, Inc. Pumps, Boiler Feedwater (235313) Bryan Boilers Blackmore & Glunt, Inc. Domestic Pump Blackmore & Glunt, Inc. Pumps, Centrifugal Bell & Gossett St. Louis Boiler Supply Co. Dunham Bush/Mepco St. Louis Boiler Supply Co. MEPCO (Dunham-Bush) Control Products, Inc. Russell Pump Control Products, Inc. Thrush Co. Hughes Machinery Company Pumps, Centrifugal (232123.13, .16, TACO, Inc. Behrmann Co. .19, .23) Pumps, Circulating TACO, Inc. St. Louis Boiler Supply Co. Pumps, Circulating (232123.13) TACO, Inc. Behrmann Co. Pumps, Circulators Grundfos Pump St. Louis Boiler Supply Co. Pumps, Condensate Armstrong Fluid Handling Mead O'Brien, Inc. Bestobell Steam Traps Hughes Machinery Company MEPCO (Dunham-Bush) Control Products, Inc. Russell Pump Control Products, Inc. Sterling, Inc. Comfort Sales Agency, Inc. Pumps, Condensate (232223.13) Skidmore Behrmann Co. Pumps, Condensate Automatic Domestic Pump Blackmore & Glunt, Inc. (232129) Kadant-Johnson Corporation Blackmore & Glunt, Inc. Pumps, Domestic Water Packaged Bell & Gossett Blackmore & Glunt, Inc. Booster (221123.13) Pumps, House TACO, Inc. Behrmann Co. Pumps, Hydronic (232123) Bell & Gossett Blackmore & Glunt, Inc. Thrush Pump Debco Equipment Co., Inc. Pumps, In-Line Centrifugal Hydronic Bell & Gossett Blackmore & Glunt, Inc. Pumps (232123.16) Pumps, Liquid Ammonia Hermetic Nation-Wide Refrigeration, Inc. Pumps, Oil Webster Heating Products St. Louis Boiler Supply Co. Pumps, Pressure Operated Transfer Armstrong International Behrmann Co. Pumps, Pressure Powered Kadant-Johnson Corporation Blackmore & Glunt, Inc. Pumps, Pressure-Operated Transfer Nicholson Steam Trap Control Products, Inc. Pumps, Refrigerant Cornell State Mechanical Services, Inc Hansen Technologies Nation-Wide Refrigeration, Inc. Hansen Technologies State Mechanical Services, Inc Hermetic Nation-Wide Refrigeration, Inc. Viking Nation-Wide Refrigeration, Inc.

52

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Pumps, Sewage Weil Pump Debco Equipment Co., Inc. Pumps, Sump & Sewage Federal Pumps Echelmeier Company Weil Pump Debco Equipment Co., Inc. Pumps, Sump Liquid (432143) Bell & Gossett Blackmore & Glunt, Inc. Pumps, Vacuum Heating Domestic Pump Blackmore & Glunt, Inc. MEPCO (Dunham-Bush) Control Products, Inc. Skidmore Behrmann Co. Pumps, Vertical Mounted, double Bell & Gossett Blackmore & Glunt, Inc. Suction Centrifugal Hydronic (232123.19) Pumps, Vertical Turbine Hydronic Bell & Gossett Blackmore & Glunt, Inc. Pumps (232123.23) Purgers, Air Hansen Technologies Nation-Wide Refrigeration, Inc. Purgers, Ammonia Hansen Technologies Nation-Wide Refrigeration, Inc. Hansen Technologies State Mechanical Services, Inc Refrigerating Specialties Nation-Wide Refrigeration, Inc. Refrigerating Specialties State Mechanical Services, Inc Quick Ship Replacement HVAC USA Coil & Air HVAC Solutions, Inc. Products Radiant Ceiling Panels Raywall H.C. Sharp Co. Radiant Ceiling Panels (Hydronic) Airtex Engineered Air Airtex Radiant Ceiling Panels-Cooling & Airtite H.C. Sharp Co. Heating Radiant Floor Heat Viega Crescent Parts & Equipment Co., Inc. Radiant Floor Heat & Snow Melting Mr PEX Systems Comfort Sales Agency, Inc. Systems Watts Radiant Blackmore & Glunt, Inc. Wirsbo Mechanical Supply Co., Inc. Radiant Floor Heating Controls Tekmar Control Systems Comfort Sales Agency, Inc. Radiant Heating Hydronic Panels Sterling Radiator Co. Commair, Inc. Radiant Heating Units (23 83 00) Q Mark Langendorf Supply Co., Inc. Radiation Baseboard Vulcan Radiator Corp. H.C. Sharp Co. Radiation, Architectural Runtal Thermal Mechanics, Inc. Receivers, Condensate Skidmore Behrmann Co. Receivers, Refrigerant Howe Nation-Wide Refrigeration, Inc. Vilter Nation-Wide Refrigeration, Inc. Recirculation Units, Ammonia Vilter Nation-Wide Refrigeration, Inc. Refrigerant Conversions Statemech State Mechanical Services, Inc Refrigerant Recovery Large Systems Statemech State Mechanical Services, Inc Refrigerant Recovery Units Therma-Flo OZ Saver Crescent Parts & Equipment Co., Inc. Refrigerating Equipment, Centrifugal York Int. Corp Engineered Thermal Systems, Inc. Refrigeration Ammonia-Bulk Airgas Nation-Wide Refrigeration, Inc. Refrigeration Equipment Heatcraft-Larkin Mechanical Supply Co., Inc. Krack Cape Winair Co. WITT Cape Winair Co. Refrigeration Equipment Ammonia Baltimore Aircoil (BAC) State Mechanical Services, Inc Refrigeration Equipment, Ammonia Frick Co. Electro Motion Refrigeration Krack Corp State Mechanical Services, Inc Mycom State Mechanical Services, Inc Vilter Nation-Wide Refrigeration, Inc. Refrigeration Parts FES State Mechanical Services, Inc Mycom State Mechanical Services, Inc Refrigeration, Ammonia-Bulk Airgas (Laroche) State Mechanical Services, Inc Refrigeration, Equipment, Absorption York Int. Corp Engineered Thermal Systems, Inc.

Registers Hart & Cooley Crescent Parts & Equipment Co., Inc. Regulators, Gas Pressure Maxitrol Co. Crescent Parts & Equipment Co., Inc. Maxitrol Co. St. Louis Boiler Supply Co. Regulators, Pressure Armstrong International Behrmann Co. Hoffman Speciality Blackmore & Glunt, Inc. Marsh-Bellofram, Inc. Control Products, Inc. Spence Engineering, Inc. Control Products, Inc. Regulators, Temperature Armstrong International Behrmann Co. Hoffman Speciality Blackmore & Glunt, Inc. Spence Engineering, Inc. Control Products, Inc. Trerice Control Products, Inc. Regulators, Temperature Trerice, Weksler Mead O'Brien, Inc. Thermometers Regulators, Temperature/Pressure Armstrong International Behrmann Co. Replacement Fans DF Fan HVAC Solutions, Inc. Reverse Osmosis Waterlink Technologies Quality Water Treatment, Inc. Revit Drawings Greenheck H.C. Sharp Co. Roof Curbs, Rails Curbs Plus H.C. Sharp Co. Roof Top Units Addison Thermal Mechanics, Inc. JCI/York Unitary Engineered Thermal Systems, Inc. Salt Gunthor Quality Water Treatment, Inc.

53

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Sanitary Pressure Regulators Steriflow Hughes Machinery Company Sanitary Valves Steriflow Hughes Machinery Company Screw Compressors Vilter Nation-Wide Refrigeration, Inc. Seals, Pipe Penetration Metraflex Blackmore & Glunt, Inc. Security Easy Lobby Dynamic Controls Inc. Security Access Honeywell Automation Solutions Group Seismic Rated Fans Greenheck H.C. Sharp Co. Sensor, Humidity Veris Controlco Inc. Sensors Veris C & C Group, Inc. Sensors Transducers Mamac Controlco Inc. Sensors, Current Veris Controlco Inc. Sensors, Humidity Mamac Controlco Inc. TAC/Invensys/ C & C Group, Inc. Sensors, Pneumatic Mamac Controlco Inc. Sensors, Pressure Veris Controlco Inc. Sensors, Temperature Mamac Controlco Inc. Veris Controlco Inc. Sensors, Transducers Veris Controlco Inc. Separators, Blowdown Columbia Boiler Co. Comfort Sales Agency, Inc. Silencers, Acoustical Commercial Acoustics AC Systems, Inc. Lindab Langendorf Supply Co., Inc. Small Custom Self Contained A C United Cool Air Thermal Mechanics, Inc. Products Smoke Control Dampers (23 33 13.19) Ruskin Langendorf Supply Co., Inc.

Solar Energy Heating Equipment (23 Solar Panels Langendorf Supply Co., Inc. 56 00) Solar Heating Systems Heat Transfer Products, Inc. Comfort Sales Agency, Inc. Solid Water Treatment Chemicals A. P. Tech Quality Water Treatment, Inc. (232513) Sound Attenuators McGill Airflow Products H.C. Sharp Co. Space Heaters and Make Up Air Units Cambridge Engineering Hughes Machinery Company

Space Heating Cambridge Engineering Inc Cambridge Engineering, Inc. Special Exhaust Systems Aget Mfg. Magary Sales, Inc. Special Exhaust Systems (23 35 00) Monoxivent Langendorf Supply Co., Inc. Specialty Destratification Units Airius Langendorf Supply Co., Inc. Spin-In Collars, Square to Round Sheet Metal Connectors Langendorf Supply Co., Inc. Adapters, Vanes Spiral Access Doors C L Ward AC Systems, Inc. Spiral Duct, Round and Flat Oval SEMCO Gaus-Scott Co. Spiral Pipe & Fittings McGill Airflow Products H.C. Sharp Co. Split System Air Conditioners Airedale Commair, Inc. Samsung Commair, Inc. Stacks (235119) Metalbestos Behrmann Co. Stacks m(235116 & 235119) Selkirk Metalbestos Behrmann Co. Stacks Positive Pressure Van Packer Trabue Industrial Systems Stacks, Positive Pressure Schebler Stacks Hughes Machinery Company Stacks, Refractory Lined Suscon Stacks Hughes Machinery Company Stacks, Single & Double Wall Schebler Stacks Hughes Machinery Company Steam Humidifiers General Crescent Parts & Equipment Co., Inc. Steam Specialties Spirax-Sarco HVAC Solutions, Inc. Steam to Water heat Exchanger Thrush Pump Debco Equipment Co., Inc. (235716) Steam Traps Watson McDaniel St. Louis Boiler Supply Co. Yarway Rhodes Equipment Co. Steam/Water Hose Stations, Mixing Armstrong Lynnwood Mead O'Brien, Inc. Valves (235700) Strainers Hoffman Speciality Blackmore & Glunt, Inc. Metraflex Blackmore & Glunt, Inc. SSI Control Products, Inc. Strainers (232200) Keckley Strainers Mead O'Brien, Inc. Strainers, Steam Keckley Behrmann Co. Strainers, Water Keckley Behrmann Co. Suction Diffusers Bell & Gossett Blackmore & Glunt, Inc. Flow Conditioning Blackmore & Glunt, Inc. TACO, Inc. Behrmann Co. Surface Steam Condensers and etc. Ambassador Hughes Machinery Company Surge Suppression Control Concepts Electronic Support Systems Swim Pool Heaters RBI Comfort Sales Agency, Inc. Switches, Air Hays/Cleveland St. Louis Boiler Supply Co. Switches, Gas Pressure Air Flow Antunes Controls St. Louis Boiler Supply Co. Tank, Heaters TACO, Inc. Behrmann Co. Tank, Lined Niles Tank Midwest Machinery Co. Tanks Wessels Blackmore & Glunt, Inc.

54

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Tanks, Expansion Amtrol, Inc. St. Louis Boiler Supply Co. Bell & Gossett Blackmore & Glunt, Inc. TACO, Inc. Behrmann Co. Tanks, Flash Wessels Blackmore & Glunt, Inc. Tanks, Lined Ace Boiler Hughes Machinery Company Tanks, Pressurized Water Thermal Cemline Blackmore & Glunt, Inc. Storage (237113.23) Tanks, Storage Ace Boiler Hughes Machinery Company Precision Boilers LLC Control Products, Inc. Wessels Blackmore & Glunt, Inc. Tanks, Strainers & Valves Wheatley Midwest Machinery Co. Tanks, Water Storage Niles Steel Tank Comfort Sales Agency, Inc. Telecom Packaged HVAC Liebert Corp Electronic Support Systems Temperature Controls American Auto-Matrix Automation Solutions Group Siemens St. Louis Boiler Supply Co. Siemens Siemens Building Technologies Square D Dynamic Controls Inc. Terminal Units Enviro-Tec AC Systems, Inc. Terminal Units, Variable Volume Metal*Aire H.C. Sharp Co. Tuttle & Bailey Rollie Johnson, Inc. (RJI) Test Plugs Peterson Equipment Company Blackmore & Glunt, Inc. Test Plugs (230900) Sisco Mead O'Brien, Inc. Thermometers Marsh Instruments Co. Blackmore & Glunt, Inc. Reotemp St. Louis Boiler Supply Co. Trerice Control Products, Inc. Trerice St. Louis Boiler Supply Co. Weiss Instruments Behrmann Co. Winters St. Louis Boiler Supply Co. Winters Instruments Blackmore & Glunt, Inc. Thermometers, Bi-Metal Weiss Instruments Behrmann Co. Thermometers, Mercury Weiss Instruments Behrmann Co. Thermometers/Gauges Miljoco Corporation Midwest Machinery Co. Thermostats Barber-Colman Crescent Parts & Equipment Co., Inc. TAC/Invensys/ C & C Group, Inc. Thermostats, Commercial Barber-Coleman Controlco Inc. Honeywell Controlco Inc. Honeywell, Inc. Crescent Parts & Equipment Co., Inc. Invensys Controlco Inc. Johnson Controls Controlco Inc. Johnson Controls, Inc. Crescent Parts & Equipment Co., Inc. Siemens Controlco Inc. TAC Controlco Inc. TCS-Basys Controlco Inc. Transfer Switches Asco Electronic Support Systems Transformers, Ignition Dongan St. Louis Boiler Supply Co. Traps, Air Armstrong International Behrmann Co. Traps, Bucket Armstrong International Behrmann Co. Traps, Disc Armstrong International Behrmann Co. Traps, Float Armstrong International Behrmann Co. Traps, Float & Thermostatic Armstrong International Behrmann Co. Traps, Sanitary Jordan Valves Hughes Machinery Company Traps, Steam Bestobell Steam Traps Hughes Machinery Company Dunham Bush/Mepco St. Louis Boiler Supply Co. Hoffman Specialty Blackmore & Glunt, Inc. MEPCO (Dunham-Bush) Control Products, Inc. Nicholson Steam Trap Control Products, Inc. Sterling, Inc. Comfort Sales Agency, Inc. Traps, Steam (232200) Armstrong Machine Works Mead O'Brien, Inc. Traps, Thermostatic Armstrong International Behrmann Co. Tube Bundles, Replacements JFD Pero Sales, Inc. Tube Cleaning Systems Thomas C. Wilson St. Louis Boiler Supply Co. Turbulators and etc. Fuel Efficiency LLC Hughes Machinery Company Ultra Violet Lighting Lumalier Engineered Thermal Systems, Inc. UVDI Custom Product Solutions, Inc. Ultraviolet Lighting UV Resources RamAir, Inc. Under Floor, Air Distribution Trox Rollie Johnson, Inc. (RJI) Underfloor Air Distribution Krueger Gaus-Scott Co. Underground Hydronic Piping Rovanco Piping Debco Equipment Co., Inc. (232113.13) Underground Steam and Condensate Rovanco Piping Debco Equipment Co., Inc. 9232213.13) Unit Coolers Bohn Crescent Parts & Equipment Co., Inc. Unit Heaters Reznor Cape Winair Co. Ruffneck HVAC Solutions, Inc. Sterling HVAC Commair, Inc. Unit Heaters (23 82 39) Hazloc Langendorf Supply Co., Inc. Sterling Langendorf Supply Co., Inc.

55

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Unit Heaters, Hydronic Engineered Air Engineered Air Unit Heaters-Industrial (238239) Cambridge Engineering Inc Cambridge Engineering, Inc. Unit Ventilators Airedale Commair, Inc. Change'Air Commair, Inc. Engineered Air Engineered Air Magic Aire Engineered Thermal Systems, Inc. Marvair E.J. Taff Sales Co., Inc. Temspec Engineered Thermal Systems, Inc. Trane Trane Units, PTAC GE Zoneline H.C. Sharp Co. Trane Trane Units, Replacement Thru-The-Wall GE H.C. Sharp Co. Window Units, Roof Top Replacement Cambridge Engineering Inc Cambridge Engineering, Inc. Units-Make-Up Air Cambridge Engineering Inc Cambridge Engineering, Inc. UVC Emitters Steril-Aire HVAC Solutions, Inc. Valves Barber-Colman Crescent Parts & Equipment Co., Inc. Belimo Controlco Inc. Erie C & C Group, Inc. HCI Controlco Inc. Hoffmann St. Louis Boiler Supply Co. Jamesbury Mead O'Brien, Inc. Johnson Controls Controlco Inc. Marwin Hughes Machinery Company Valves, Actuators Honeywell, Inc. Crescent Parts & Equipment Co., Inc. Valves, Air Release Armstrong International Behrmann Co. Valves, Ammonia Hansen Technologies State Mechanical Services, Inc Henry State Mechanical Services, Inc Henry Valves Nation-Wide Refrigeration, Inc. Refrigerating Specialties Nation-Wide Refrigeration, Inc. Refrigerating Specialties State Mechanical Services, Inc Shank Nation-Wide Refrigeration, Inc. Vilter Nation-Wide Refrigeration, Inc. Valves, Ammonia Check Hansen Technologies State Mechanical Services, Inc Refrigerating Specialties Nation-Wide Refrigeration, Inc. Refrigerating Specialties State Mechanical Services, Inc Valves, Ammonia Control H A Phillips State Mechanical Services, Inc H.A. Phillips Co. Nation-Wide Refrigeration, Inc. Hansen Technologies Nation-Wide Refrigeration, Inc. Hansen Technologies State Mechanical Services, Inc Refrigerating Specialties Nation-Wide Refrigeration, Inc. Refrigerating Specialties State Mechanical Services, Inc Valves, Ammonia Relief Hansen Technologies Nation-Wide Refrigeration, Inc. Hansen Technologies State Mechanical Services, Inc Refrigerating Specialties State Mechanical Services, Inc Shank State Mechanical Services, Inc Valves, Ammonia Solenoid Hansen Technologies State Mechanical Services, Inc Refrigerating Specialties Nation-Wide Refrigeration, Inc. Refrigerating Specialties State Mechanical Services, Inc Valves, Ammonia Solenoids Hansen Technologies Nation-Wide Refrigeration, Inc. Valves, Ammonia, Check Hansen Technologies Nation-Wide Refrigeration, Inc. Valves, Automatic Hays Fluid Controls Rollie Johnson, Inc. (RJI) Valves, Automatic Flow Control H.A. Phillips Co. Nation-Wide Refrigeration, Inc. Hansen Technologies Nation-Wide Refrigeration, Inc. Refrigerating Specialties Nation-Wide Refrigeration, Inc. Valves, Automatic Flow Control and Griswold Engineered Thermal Systems, Inc. Pressure Independent Valves, Balancing TACO, Inc. Behrmann Co. Valves, Balancing & Flow Bell & Gossett Blackmore & Glunt, Inc. Measurements Flow Design, Inc. Thermal Mechanics, Inc. TACO, Inc. Behrmann Co. Valves, Blowdown Yarway Rhodes Equipment Co. Valves, Boiler Blowdown Everlasting Valves Trabue Industrial Systems Valves, Butterfly Flowline Mead O'Brien, Inc. Valves, Check Durabla Hughes Machinery Company Durabla Mfg. Co. Control Products, Inc. Durabla Mfg. Co. St. Louis Boiler Supply Co. Metraflex Blackmore & Glunt, Inc. Refrigerating Specialties Nation-Wide Refrigeration, Inc. Refrigerating Specialties State Mechanical Services, Inc SSI Control Products, Inc. Valves, Control ARI Control Products, Inc. Honeywell, Inc. Crescent Parts & Equipment Co., Inc. Johnson Controls, Inc. Crescent Parts & Equipment Co., Inc. Jordan Valves Hughes Machinery Company KMC Controls TayCon Building Technologies

56

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Leslie Controls St. Louis Boiler Supply Co. Spence Engineering, Inc. Control Products, Inc. TAC/Invensys/ C & C Group, Inc. Valves, Control Pressure Independent Flow Control Industries Blackmore & Glunt, Inc. (230913.33) Valves, Controls Belimo St. Louis Boiler Supply Co. Valves, Fittings, Supports NIBCO NIBCO/Tolco Inc Valves, Float Armstrong International Behrmann Co. Valves, Flow Control Refrigerating Specialties Nation-Wide Refrigeration, Inc. Valves, Gas Honeywell, Inc. St. Louis Boiler Supply Co. Valves, Motor Operated Erie (Schneider Elec.) Friemel-Love Co. ITT General St. Louis Boiler Supply Co. TAC/Invensys/ C & C Group, Inc. Valves, Motor Operated Barber-Coleman C & C Group, Inc. Valves, Pressure Reducing Spence Engineering, Inc. Control Products, Inc. Valves, Pressure Regulating Armstrong International Behrmann Co. Armstrong Machine Works Mead O'Brien, Inc. Valves, Pressure Relief (232200) Kunkle Mead O'Brien, Inc. Valves, Pump Protection Boiler Trim Yarway Rhodes Equipment Co. Valves, Radiator Danfoss, Inc. Blackmore & Glunt, Inc. Dunham Bush/Mepco St. Louis Boiler Supply Co. Valves, Radiator (230913.33) Macon Control Corp. Behrmann Co. Valves, Reducing Armstrong International Behrmann Co. Valves, Refrigerant Control Hansen Technologies Nation-Wide Refrigeration, Inc. Refrigerating Specialties Nation-Wide Refrigeration, Inc. Sporlan Valve Co. Crescent Parts & Equipment Co., Inc. Valves, Refrigerant Line Hansen Technologies Nation-Wide Refrigeration, Inc. Henry Valves Nation-Wide Refrigeration, Inc. Shank Nation-Wide Refrigeration, Inc. Vilter Nation-Wide Refrigeration, Inc. Valves, Refrigeration Control Rawal Valve Rollie Johnson, Inc. (RJI) Valves, Regulating Armstrong International Behrmann Co. Valves, Regulator Jordan Valves Hughes Machinery Company Valves, Relief Conbraco Industries, Inc. Behrmann Co. Ful-Flo Specialities Control Products, Inc. Vilter Nation-Wide Refrigeration, Inc. Watts St. Louis Boiler Supply Co. Valves, Relief Ammonia Refrigerating Specialties Nation-Wide Refrigeration, Inc. Shank Nation-Wide Refrigeration, Inc. Valves, Safety ARI Control Products, Inc. Conbraco Industries, Inc. Behrmann Co. Conbraco Industries, Inc. St. Louis Boiler Supply Co. Spence Engineering, Inc. Control Products, Inc. Valves, Safety Relief Leser Control Products, Inc. Valves, Sanitary Jordan Valves Hughes Machinery Company Valves, Solenoid Asco General St. Louis Boiler Supply Co. Hansen Technologies Nation-Wide Refrigeration, Inc. Hay Fluid Controls St. Louis Boiler Supply Co. ITT General St. Louis Boiler Supply Co. Refrigerating Specialties Nation-Wide Refrigeration, Inc. Valves, Solenoid (230900) ASCO Mead O'Brien, Inc. Valves, Temperature Control Armstrong International Behrmann Co. Macon Control Corp. Behrmann Co. Valves, Thermal Expansion Sporlan Valve Co. Crescent Parts & Equipment Co., Inc. Valves, Triple Duty Bell & Gossett Blackmore & Glunt, Inc. TACO, Inc. Behrmann Co. Valves, Two Way Solenoid Magnatrol St. Louis Boiler Supply Co. Valves, Water Level Float Control Armstrong International Behrmann Co. Valves, Water Regulating Armstrong International Behrmann Co. Variable Air Volume Boxes Markel Thermal Mechanics, Inc. Variable Air Volume Units Krueger Gaus-Scott Co. Variable Frequency Drive Square D C & C Group, Inc. Variable Frequency Drives Danfoss Graham Friemel-Love Co. Emerson Controlled Techniques Electronic Support Systems General Electric Rollie Johnson, Inc. (RJI) Honeywell Crescent Parts & Equipment Co., Inc. Square D Midwest Machinery Co. Trane Trane Yaskawa AC Systems, Inc. Yaskawa Custom Product Solutions, Inc. Variable Frequency Motor Controllers Cerus Industrial Langendorf Supply Co., Inc. (26 29 23) Variable Refrigerant Flow System Samsung Engineered Thermal Systems, Inc. Variable Speed Drives Pelco Dynamic Controls Inc. VAV Terminals Metal*Aire H.C. Sharp Co. Vent, Gas Stainless Steel (235123) Heat-Fab Blackmore & Glunt, Inc. Ventilation Hoods Kees, Inc. Magary Sales, Inc.

57

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Ventilation Hoods (23 38 00) GreaseMaster Langendorf Supply Co., Inc. Halton Langendorf Supply Co., Inc. Ventilators, Attic, Roof Penthouse Peerless Rollie Johnson, Inc. (RJI) Vertical Fire Tube Boilers Triad Boilers Hughes Machinery Company Vertical Stack Fan Coils Williams H.C. Sharp Co. Vessels, Pressure Howe Nation-Wide Refrigeration, Inc. Vilter Nation-Wide Refrigeration, Inc. Vibration & Seismic Controls California Dynamics Magary Sales, Inc. Vibration & Seismic Controls for HVAC Mason Industries AC Systems, Inc. Piping & Equipment (230548) Vibration and Seismic Control Vibration Eliminator Co. Commair, Inc. Vibration and Seismic Controls Kinetics Noise Control Gaus-Scott Co. Vibration and Seismic Controls for AmberBooth-VMC Langendorf Supply Co., Inc. HVAC Piping and Equipment (23 05 48) Vibration Control Equipment Industrial Acoustics Co. Thermal Mechanics, Inc. Vibration Isolation Vibration Eliminator Co. Echelmeier Company VRV (Variable Refrig Volume) Daikin AC Thermal Mechanics, Inc. Systems Walk-In Coolers & Freezers Crown/Tonka State Mechanical Services, Inc Warehouse Heating Cambridge Engineering Inc Cambridge Engineering, Inc. Water Boilers Lochinvar Crescent Parts & Equipment Co., Inc. Water Chillers, Absorption Trane Trane Water Chillers, Centrifugal Trane Trane Water Chillers, Rotary Screw Trane Trane Water Chillers, Scroll Trane Trane Water heater Instantaneous Armstrong Hot Water Mead O'Brien, Inc. Water Heaters Graham Manufacturing, Inc. Control Products, Inc. Green Boiler Technologies-Sellers Engineering- Echelmeier Company Weben-Jarco Boilers Parker Boiler Co. Control Products, Inc. Precision Boilers LLC Control Products, Inc. RBI Comfort Sales Agency, Inc. RBI St. Louis Boiler Supply Co. RECO, USA Behrmann Co. Water Heaters (220630.13) AERCO Blackmore & Glunt, Inc. Raypak Blackmore & Glunt, Inc. Water Heaters, Steam Ace Boiler Hughes Machinery Company Leslie Controls St. Louis Boiler Supply Co. Patterson-Kelley Hughes Machinery Company Water Heaters, Tankless Noritz Crescent Parts & Equipment Co., Inc. Water Softeners Alamo Water Hughes Machinery Company Marlo Quality Water Treatment, Inc. Water Softener (232500) Watts Mead O'Brien, Inc. Water Source Heat Pumps Climate Master Midwest Machinery Co. JCI/Skymark Engineered Thermal Systems, Inc. Mammoth (CES Group) Thermal Mechanics, Inc. Water Source Unitary Heat Pump (23 GeoComfort Enertech Langendorf Supply Co., Inc. 81 46) Water Treatment ClearWater Systems Heartland Mechanical Solutions Water Treatment (232513) Quality Water Treatment Quality Water Treatment, Inc. Water Treatment Equipment Marlo Trabue Industrial Systems Water Tube Boilers - Flex Type Unilux Boiler Hughes Machinery Company Zonelines GE H.C. Sharp Co. Zoning Residential, Network Honeywell, Inc. Crescent Parts & Equipment Co., Inc.

58

Manufacturer Manufacturer Rep. Distributor

A. P. Tech Quality Water Treatment, Inc. Quality Water Treatment, Inc. AAON Inc. AC Systems, Inc. AC Systems, Inc. Absolute Aire Rollie Johnson, Inc. (RJI) Ace Boiler Hughes Machinery Co. Acme Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Acme Engineering & Mfg. Thermal Mechanics, Inc. ACUAir Electro Motion Refrigeration Acutherm, Inc. AC Systems, Inc. AC Systems, Inc. Addison Thermal Mechanics, Inc. ADP Cape WinAir Co. Adsco Rhodes Equipment Co. Advance Valve, Inc. Control Products, Inc. Advanced Thermal Systems Hughes Machinery Co. Advantage Controls Quality Water Treatment, Inc. Quality Water Treatment, Inc. AERCO Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Aero Tech Mfg Co. AC Systems, Inc. AC Systems, Inc. Aerofin Corp. Pero Sales, Inc. Aerosonics Rollie Johnson, Inc. (RJI) Aerovent Fan Pero Sales, Inc. Aget Mfg. Magary Sales, Inc. Air Balance Gaus-Scott Co. Air Concepts Air Distribution Concepts Pero Sales, Inc. Rollie Johnson, Inc. (RJI) Air Distribution Concepts, Inc AC Systems, Inc. Air Enterprises, LLC Friemel-Love Co. Air Guide Gaus-Scott Co. Air Monitor Rollie Johnson, Inc. (RJI) Air Technology Solutions Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Air Zone Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division Aircuity Friemel-Love Co. Airedale Commair, Inc. Airflow Equipment Company Engineered Thermal Systems, Inc. (ETS) Airgas Nation-Wide Refrigeration, Inc. Airgas (Laroche) State Mechanical Services, Inc. Airius Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Airtex Engineered Air Engineered Air Airtex Airtherm E.J. Taff Sales Co. Airtite H.C. Sharp Co. AJ Manufacturing AC Systems, Inc. AC Systems, Inc. AJ MFG Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Ajax Boiler Hughes Machinery Co. Alamo Water Hughes Machinery Co. ALCO Controls Cape WinAir Co. Alerton Technologies, Inc. Thermal Mechanics, Inc. Alfa Laval Echelmeier Co. Alkota Cleaning Systems St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Amana Rollie Johnson, Inc. (RJI) Cape WinAir Co. Ambassador Hughes Machinery Co. AmberBooth-VMC Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. AmbiRad Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc AMBI-RAD Thermal Mechanics, Inc. American Air Filter Cape WinAir Co. R.R. Waites Co., Inc. Thermal Mechanics, Inc. American Auto-Matrix Automation Solutions Group Automation Solutions Group American Coil HVAC Solutions, Inc. American Coolair Magary Sales, Inc. American Heating Co. Hughes Machinery Co. American Infra-Red, Inc. American Louver AC Systems, Inc. American Marsh Pumps Hughes Machinery Co. American Standard Crescent Parts & Equipment Co., Inc. American Standard Commercial American Standard Residential American Turbine Midwest Machinery Co. Midwest Machinery Co. American Warming Gaus-Scott Co. Ammark Commair, Inc. AMPCO Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. American Air Filter Pero Sales, Inc. Amtrol, Inc. St. Louis Boiler Supply Co. Andover Continum Dynamic Controls Inc. Dynamic Controls Inc. Anemostat AC Systems, Inc. AC Systems, Inc. Annexair Trane Trane Antunes Controls St. Louis Boiler Supply Co. St. Louis Boiler Supply Co.

59

Manufacturer Manufacturer Rep. Distributor

APC Dynamic Controls Inc. Dynamic Controls Inc. APC-Network Air (Airflow) Rollie Johnson, Inc. (RJI) Appion Koch Air, LLC-Parts & Supplier Division Applied Air HVAC Solutions, Inc. Aprilaire/Research Products Cape WinAir Co. Crescent Parts & Equipment Co., Inc. Koch Air, LLC-Parts & Supplier Division ARI Control Products, Inc. Armstrong St. Louis Boiler Supply Co. Armstrong Air Commercial Cape WinAir Co. Armstrong Air Residential Armstrong Fluid Handling Mead O'Brien, Inc. Mead O'Brien, Inc. Armstrong Hot Water Armstrong Hot Water Group Armstrong International Behrmann Co. Behrmann Co. Armstrong Lynnwood Mead O'Brien, Inc. Mead O'Brien, Inc. Armstrong Machine Works Armstrong Monitoring H.C. Sharp Co. Magary Sales, Inc. Armstrong Pumps Midwest Machinery Co. Midwest Machinery Co. Arrow United Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Artic Chill Thermal Mechanics, Inc Asco Electronic Support Systems Mead O'Brien, Inc. Mead O'Brien, Inc. Asco General St. Louis Boiler Supply Co. ASCO TriPoint St. Louis Boiler Supply Co. Asp-Div of First Co. Engineered Thermal Systems, Inc. (ETS) Aspen Air Koch Air, LLC-Parts & Supplier Division ATCO Rollie Johnson, Inc. (RJI) Autoflame Controls Hughes Machinery Co. Automated Logic Corp Automatic Controls Equipment Systems, Automatic Controls Equipment Systems, Inc. Inc. Babcock & Wilcox Debco Equipment Co., Inc. Bacharach St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Baltimore Aircoil (B.A.C.) Nation-Wide Refrigeration Baltimore Aircoil (BAC) State Mechanical Services, Inc. Baltimore Aircoil Co. Echelmeier Co. Barber-Coleman C & C Group Controlco Barber-Colman Crescent Parts & Equipment Co., Inc. Bard Mechanical Supply Co., Inc. Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division Beacon Morris Comfort Sales Agency, Inc. Belimo C & C Group Controlco Controlco St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Belimo Controls Gaus-Scott Co. Bell & Gossett Koch Air, LLC-Parts & Supplier Division St. Louis Boiler Supply Co. Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Bergen Power/Carpenter Patterson Rhodes Equipment Co. Rhodes Equipment Co. Berko Electric Co. Gaus-Scott Co. Berner Thermal Mechanics, Inc. Bessamaire Engineered Thermal Systems, Inc. (ETS) Bestobell Steam Traps Hughes Machinery Co. BFS BFS Industries St. Louis Boiler Supply Co. Blender Products, Inc. Rollie Johnson, Inc. (RJI) Bohn Crescent Parts & Equipment Co., Inc. State Mechanical Services, Inc. Nation-Wide Refrigeration, Inc. Bostick AC Systems, Inc. AC Systems, Inc. Brasch Mfg. Co. Commair, Inc. Breidert Air Products Broan Gaus-Scott Co. Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Bry-Air Engineered Thermal Systems, Inc. (ETS) Bryan Boilers Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Bryant Koch Air, LLC-Bryant Division Buffalo Air Handling HVAC Solutions, Inc. Burnham Commercial Behrmann Co. Behrmann Co. Burnham Corp Crescent Parts & Equipment Co., Inc. Burnham Hydronics Behrmann Co. Behrmann Co.

60

Manufacturer Manufacturer Rep. Distributor

C L Ward AC Systems, Inc. AC Systems, Inc. Cain Industries Behrmann Co. Behrmann Co. California Dynamics Magary Sales, Inc. Calmac Trane Trane Cambridge Engineering Hughes Machinery Co. Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Cambridge Engineering Inc Cambridge Engineering CAMCO State Mechanical Services, Inc. . Camfil Farr RamAir, Inc. RamAir, Inc. Camus-Hydronics Debco Equipment Co., Inc. Canarilis Trane Trane Canatal Rollie Johnson, Inc. (RJI) Cannon Trabue Industrial Systems Trabue Industrial Systems Carbon Link RamAir, Inc. RamAir, Inc. Carel Trane Trane Carlyle Mechanical Supply Co., Inc. Carlyle/Carrier Koch Air, LLC-Parts & Supplier Division Car-Mon Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Carnes AC Systems, Inc. AC Systems, Inc. Carrier Air Conditioning Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division Carroll Manufacturing RamAir, Inc. RamAir, Inc. CDI Thermal Mechanics, Inc. Cemline Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Cerus Industrial Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Cesco Products Gaus-Scott Co. CFM Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Change'Air Commair, Inc. Chester-Jensen Co., Inc. Nation-Wide Refrigeration, Inc. Chicago Blower R.R. Waites Co., Inc. Cierra Products Gaus-Scott Co. Cincinnati Fan Pero Sales, Inc. CirculAire Rollie Johnson, Inc. (RJI) Clean Air Designs Magary Sales, Inc. Clean Room Technologies R.R. Waites Co., Inc. ClearWater Systems Heartland Mechanical Solutions Cleaver Brooks Trabue Industrial Systems Trabue Industrial Systems Climate Craft Rollie Johnson, Inc. (RJI) Climate Master Midwest Machinery Co. Midwest Machinery Co. Coen Co., Inc. Rhodes Equipment Co. Coil Co Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Coilmaster, Inc. Behrmann Co. Behrmann Co. Columbia Boiler Co. Comfort Sales Agency, Inc. Combustion Research, Inc. Commercial Acoustics AC Systems, Inc. Compu-Aire, Inc. AC Systems, Inc. Con Dex Debco Equipment Co., Inc. Conbraco Industries, Inc. St. Louis Boiler Supply Co. Behrmann Co. Behrmann Co. Contamination Technology Co (CTC) R.R. Waites Co., Inc. Control Air Rollie Johnson, Inc. (RJI) Control Concepts Electronic Support Systems CoolAir Int'l E.J. Taff Sales Co. Cooling Tower Depot Rhodes Equipment Co. Rhodes Equipment Co. Copeland Corp. Crescent Parts & Equipment Co., Inc. Koch Air, LLC-Parts & Supplier Division Cornell State Mechanical Services, Inc. Cortec Quality Water Treatment, Inc. Quality Water Treatment, Inc. COSA/TRON Rollie Johnson, Inc. (RJI) Critical Environment Technologies Crescent Parts & Equipment Co., Inc. Crown/Tonka State Mechanical Services, Inc. Curbs Plus H.C. Sharp Co. Cutler Hammer (EATON) Rollie Johnson, Inc. (RJI) Dadanco AC Systems, Inc. AC Systems, Inc. Daikin AC Thermal Mechanics, Inc. Danfoss Graham Friemel-Love Co. Danfoss, Inc. Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Dayus Register & Grille Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Dectron, Inc. Rollie Johnson, Inc. (RJI) Delhi Fan Gaus-Scott Co. Dell E.J. Taff Sales Co. Desert Aire Engineered Thermal Systems, Inc. (ETS) Design Polymerics Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Detroit Radiant Products DF Fan HVAC Solutions, Inc. Discovair, LLC Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division Domestic Pump Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Dongan St. Louis Boiler Supply Co. St. Louis Boiler Supply Co.

61

Manufacturer Manufacturer Rep. Distributor

Dow Quality Water Treatment, Inc. Quality Water Treatment, Inc. Dowco Dowdall Engineering, Inc RamAir, Inc. RamAir, Inc. Dri Steam Humidifier, Co. Thermal Mechanics, Inc. Duct Sox Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Dunham Bush Mechanical Supply Co., Inc. Dunham Bush/Mepco St. Louis Boiler Supply Co. Dunkirk Koch Air, LLC-Bryant Division Koch Air, LLC-Parts & Supplier Division Durabla Hughes Machinery Co. Durabla Mfg. Co. Control Products, Inc. St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Duro Dyne Cape WinAir Co. Koch Air, LLC-Parts & Supplier Division Dustex Rollie Johnson, Inc. (RJI) Dwyer Instruments, Inc. Mead O'Brien, Inc. Mead O'Brien, Inc. St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Dynaforce Gaus-Scott Co. Dynasonics Easy Lobby Dynamic Controls Inc. Dynamic Controls Inc. Eaton State Mechanical Services, Inc. Ebtron Friemel-Love Co. Econ Air Rollie Johnson, Inc. (RJI) EDG Trane Trane Electromode E.J. Taff Sales Co. Emerson Controlled Techniques Electronic Support Systems Energy Labs Engineered Thermal Systems, Inc. (ETS) Enfab, Inc. Enfab, Inc. Engineered Air Engineered Air Engineered Air English Boiler Rhodes Equipment Co. Rhodes Equipment Co. Enviro-Tec AC Systems, Inc. AC Systems, Inc. Epsilon Thermal Mechanics, Inc. Erie C & C Group Erie (Schneider Elec.) Friemel-Love Co. ERV Systems Engineered Thermal Systems, Inc. (ETS) Essick H.C. Sharp Co. EVAPCO Trane Trane Everlasting Valves St. Louis Boiler Supply Co. Trabue Industrial Systems Trabue Industrial Systems Exhausto Behrmann Co. Behrmann Co. Fabric Air Gaus-Scott Co. Fabtek Aero St Louis Boiler Supply Co. Fafco Engineered Thermal Systems, Inc. (ETS) Fantech Ventilation Crescent Parts & Equipment Co., Inc. Fasco Federal Pumps Echelmeier Co. FES State Mechanical Services, Inc. Field Controls St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Fieldpiece Koch Air, LLC-Parts & Supplier Division Filter Specialists, Inc. Quality Water Treatment, Inc. Quality Water Treatment, Inc. Filtrine Trane Trane Fireye Hughes Machinery Co. St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. First Co Crescent Parts & Equipment Co., Inc. Rollie Johnson, Inc. (RJI) First Co (Applied Environmental Air Fisen Corp Engineered Thermal Systems, Inc. (ETS) Flame Gard Gaus-Scott Co. Flanders Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Flexmaster AC Systems, Inc. AC Systems, Inc. Flexmaster USA Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Flexonics Gaus-Scott Co. Flo-Fab Inc. Trabue Industrial Systems Trabue Industrial Systems Flomatic St. Louis Boiler Supply Co. Florida Heat Pump Cape WinAir Co. AC Systems, Inc. Flow Conditioning Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Flow Control Industries Flow Design, Inc. Thermal Mechanics, Inc. Flowline Mead O'Brien, Inc. Mead O'Brien, Inc. Flowsafe Rollie Johnson, Inc. (RJI) FOF, Inc. Fostoria Foxboro Mead O'Brien, Inc. Mead O'Brien, Inc.

62

Manufacturer Manufacturer Rep. Distributor

Frick Co. Electro Motion Refrigeration Friedrich Rollie Johnson, Inc. (RJI) Frigidaire Mechanical Supply Co., Inc. Fuel Efficiency LLC Hughes Machinery Co. Ful-Flo Specialities Control Products, Inc. Fulton Boiler Works Behrmann Co. Behrmann Co. Furlong Industrial Systems Echelmeier Co. GE Cape WinAir Co. H.C. Sharp Co. GE Zoneline Gebhardt Nation-Wide Refrigeration, Inc. General Crescent Parts & Equipment Co., Inc Crescent Parts & Equipment Co., Inc. General Electric Rollie Johnson, Inc. (RJI) Genesis State Mechanical Services, Inc. GeoComfort Enertech Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Global Finishing Governair Custom Product Solutions, Inc. Governair (CES Group) Thermal Mechanics, Inc. Graham Manufacturing, Inc. Control Products, Inc. GreaseMaster Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Green Boiler Technologies-Sellers Echelmeier Co. Engineering-Weben-Jarco Boilers Greenheck H.C. Sharp Co. Gripple Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Griswold Engineered Thermal Systems, Inc. (ETS) Grundfos St. Louis Boiler Supply Co. Grundfos Pump Gunthor Quality Water Treatment, Inc. Quality Water Treatment, Inc. H A Phillips State Mechanical Services, Inc. H.A. Phillips Co. Nation-Wide Refrigeration, Inc. Halton Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Hansen Technologies Nation-Wide Refrigeration, Inc. State Mechanical Services, Inc. Hardcast AC Systems, Inc. AC Systems, Inc. Hart & Cooley Cape WinAir Co. Crescent Parts & Equipment Co., Inc. Koch Air, LLC-Parts & Supplier Division Gaus-Scott Co. Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Hastings Industries AC Systems, Inc. A.C. Systems, Inc. AC Systems, Inc. Hay Fluid Controls Rollie Johnson, Inc. (RJI) St. Louis Boiler Supply Co. Haydon Behrmann Co. Behrmann Co. Hays/Cleveland St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Hazloc Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. HB Smith St. Louis Boiler Supply Co. HCI Controlco Heat Controller Crescent Parts & Equipment Co., Inc. Heat Harvester Thermal Mechanics, Inc. Heat Pipe Technology Rollie Johnson, Inc. (RJI) Heat Transfer Products, Inc. Comfort Sales Agency, Inc. Heatcraft HVAC Solutions, Inc. Heatcraft-Larkin Mechanical Supply Co., Inc. Heat-Fab Behrmann Co. Behrmann Co. Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Heatsponge Hughes Machinery Co. Heat-Timer Debco Equipment Co., Inc. Henry State Mechanical Services, Inc. Henry Valves Nation-Wide Refrigeration, Inc. Herl Hermetic Hero Gaus-Scott Co. Herrmidifier Co., Inc. Rollie Johnson, Inc. (RJI) Hi-Velocity Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Hneywell, Inc. Commair, Inc. Hoffman Specialty Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Hoffmann St. Louis Boiler Supply Co. Honeywell Controlco Crescent Parts & Equipment Co., Inc. Koch Air, LLC-Parts & Supplier Division Automation Solutions Group Automation Solutions Group TayCon TayCon Honeywell Analytics Custom Product Solutions, Inc. Honeywell Excel DDC Crescent Parts & Equipment Co., Inc. Honeywell Excel Rapid Zone Honeywell, Inc.

63

Manufacturer Manufacturer Rep. Distributor

St. Louis Boiler Supply Co. Commair, Inc. Honeywell/White Rodgers Cape WinAir Co. Howden (Joy Fans) Friemel-Love Co. Howe Nation-Wide Refrigeration, Inc. HT Pump Specialties Trabue Industrial Systems Trabue Industrial Systems Huntair (CES Group) Thermal Mechanics, Inc. Hurst Boiler Debco Equipment Co., Inc. HVAC Solution Behrmann Co. Behrmann Co. HVAC Solution Hydroheat Crescent Parts & Equipment Co., Inc. Hydrolevel Co. Behrmann Co. Behrmann Co. Hydronic Monitor Hydrotherm St. Louis Boiler Supply Co. Comfort Sales Agency, Inc. Hyspan-Barco Rhodes Equipment Co. Rhodes Equipment Co. ICE ICM Koch Air, LLC-Parts & Supplier Division ICM Controls Cape WinAir Co. IEC International Environmental Thermal Mechanics, Inc. Ilg Industries Magary Sales, Inc. Indeeco Rollie Johnson, Inc. (RJI) Industrial Acoustics Co. Thermal Mechanics, Inc. Industrial Combustion St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Ingenia Engineered Thermal Systems, Inc. (ETS) Innovent Rollie Johnson, Inc. (RJI) Interstate Chemical Quality Water Treatment, Inc. Quality Water Treatment, Inc. Invensys Controlco ITT General St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. J. L. Wingert Quality Water Treatment, Inc. Quality Water Treatment, Inc. J.L. Industries AC Systems, Inc. AC Systems, Inc. Jackson & Church Rollie Johnson, Inc. (RJI) Jamesbury Mead O'Brien, Inc. Mead O'Brien, Inc. JBI, Inc. JCI/Skymark Engineered Thermal Systems, Inc. (ETS) JCI/York Unitary Jenco Fan Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc JFD Pero Sales, Inc. Johnson Controls Cape WinAir Co. Controlco Controlco Johnson Controls, Inc. Crescent Parts & Equipment Co., Inc. Johnson Controls, Incorporated Johnson Controls, Incorporated Johnston Boller Hughes Machinery Co. Jordan Valves Kadant-Johnson Corporation Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Kathabar Custom Product Solutions, Inc. Keckley Behrmann Co. Behrmann Co. Keckley Strainers Mead O'Brien, Inc. Mead O'Brien, Inc. Kees Thermal Mechanics, Inc. Kees, Inc. Gaus-Scott Co. Magary Sales, Inc. Kinco Adhedisive Cape WinAir Co. Kinetics Noise Control Gaus-Scott Co. Kirk & Blum R.R. Waites Co., Inc. Kite Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division KMC Controls TayCon TayCon Knurr Electronic Support Systems Koch Filters AC Systems, Inc. AC Systems, Inc. Koldwave Mead O'Brien, Inc. Mead O'Brien, Inc. Rollie Johnson, Inc. (RJI) Krack Cape WinAir Co. Nation-Wide Refrigeration, Inc. Krack Corp State Mechanical Services, Inc. Krueger Gaus-Scott Co. Kunkle Mead O'Brien, Inc. Mead O'Brien, Inc. L.E.S. Inc. Behrmann Co. Behrmann Co. LAARS Mechanical Supply Co., Inc. Laars Heating Systems Midwest Machinery Co. Midwest Machinery Co. Lakos Separators Trane Trane Larkin Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Larkin Industries Thermal Mechanics, Inc. Lattner Boiler Mead O'Brien, Inc. Mead O'Brien, Inc. Leader Industries Magary Sales, Inc. Rollie Johnson, Inc. (RJI) Leading Edge Lennox Rollie Johnson, Inc. (RJI)

64

Manufacturer Manufacturer Rep. Distributor

Leser Control Products, Inc. Leslie Controls St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Lewis & Lambert Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Lexton Fans AC Systems, Inc. LG Cape WinAir Co. Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division LG Products Koch Air, LLC-Bryant Division Koch Air, LLC-Parts & Supplier Division Liebert Corp Electronic Support Systems Limpsfield Burners Hughes Machinery Co. Lindab Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Lipten Hughes Machinery Co. Lochinvar Crescent Parts & Equipment Co., Inc. Lochinvar Corp. Behrmann Co. Behrmann Co. Loren Cook Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Louvers & Dampers Rollie Johnson, Inc. (RJI) Lumalier Engineered Thermal Systems, Inc. (ETS) Lumisys Automatic Controls Equipment Systems, Automatic Controls Equipment Systems, Inc. Inc. Macon Balancing Behrmann Co. Behrmann Co. Macon Control Corp. Macurco Controlco Magic Aire Cape WinAir Co. Crescent Parts & Equipment Co., Inc. Engineered Thermal Systems, Inc. (ETS)

MagicAire Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division Magnatrol St. Louis Boiler Supply Co. Magtech Rhodes Equipment Co. Rhodes Equipment Co. Mamac Controlco Mammoth Mechanical Supply Co., Inc. Mammoth (CES Group) Thermal Mechanics, Inc. Manning Systems Nation-Wide Refrigeration State Mechanical Services, Inc. Marcraft H.C. Sharp Co. Markel Thermal Mechanics, Inc. Marley Cooling Technologies Midwest Machinery Co. Midwest Machinery Co. Marlo HVAC Solutions, Inc. Quality Water Treatment, Inc. Quality Water Treatment, Inc. Trabue Industrial Systems Trabue Industrial Systems Mars Gaus-Scott Co. H.C. Sharp Co. Marsh Instruments Co. Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Marsh-Bellofram, Inc. Control Products, Inc. Marvair E.J. Taff Sales Co. Marwin Hughes Machinery Co. Mason Industries AC Systems, Inc. AC Systems, Inc. Maxitrol Co. Crescent Parts & Equipment Co., Inc. St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. McDonnell & Miller Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. McGill Airflow Products H.C. Sharp Co. McQuay Thermal Mechanics, Inc. MEPCO (Dunham-Bush) Control Products, Inc. Metal Fab Koch Air, LLC-Parts & Supplier Division Metal Samples Quality Water Treatment, Inc. Quality Water Treatment, Inc. Metal*Aire H.C. Sharp Co. Metalbestos Behrmann Co. Behrmann Co. Metraflex Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Micro Metals Koch Air, LLC-Bryant Division Micro Metl Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division Micrometl Crescent Parts & Equipment Co., Inc. MilCor Gaus-Scott Co. Milcor, Inc. H.C. Sharp Co. Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Miljoco Corporation Midwest Machinery Co. Midwest Machinery Co. Milton Roy Chemical Pumps Quality Water Treatment, Inc. Quality Water Treatment, Inc. Mistop Pero Sales, Inc. Mitsubishi Electric Crescent Parts & Equipment Co., Inc. Mechanical Supply Co., Inc. AC Systems, Inc AC Systems, Inc AC Systems, Inc. AC Systems, Inc. Mead O'Brien, Inc. Mead O'Brien, Inc. Modine Koch Air, LLC-Parts & Supplier Division Mechanical Supply Co., Inc. H.C. Sharp Co. Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division

65

Manufacturer Manufacturer Rep. Distributor

Moffitt Corp. Gaus-Scott Co. Monoxivent Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Motivair Trane Trane Movin Cool Mr PEX Systems Comfort Sales Agency, Inc. Mueller Nation-Wide Refrigeration, Inc. State Mechanical Services, Inc. Multi Aqua Crescent Parts & Equipment Co., Inc. MultiAqua Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division MultiStack Rollie Johnson, Inc. (RJI) Munters State Mechanical Services, Inc. Mycom Nation-Wide Refrigeration NAFCO RamAir, Inc. RamAir, Inc. Nailor Thermal Mechanics, Inc. Natcom Div of Cleaver Brooks Trabue Industrial Systems Trabue Industrial Systems NCA Manufacturing Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Nebraska Trabue Industrial Systems Trabue Industrial Systems Nederman, Inc. R.R. Waites Co., Inc. Neptronics H.C. Sharp Co. NIBCO NIBCO/Tolco Inc Nicholson Steam Trap Control Products, Inc. Niles Steel Tank Comfort Sales Agency, Inc. Niles Tank Midwest Machinery Co. Midwest Machinery Co. Noritz Crescent Parts & Equipment Co., Inc. Nortec Industries HVAC Solutions, Inc. Novar Controls Midwest Machinery Co. Midwest Machinery Co. NU-Calgon Koch Air, LLC-Parts & Supplier Division Ocean Aire Mead O'Brien, Inc. Mead O'Brien, Inc. Onicon Custom Product Solutions, Inc. Paragon Controls Cape WinAir Co. Crescent Parts & Equipment Co., Inc. R.R. Waites Co., Inc. Parker Mead O'Brien, Inc. Mead O'Brien, Inc Parker Boiler Co. Control Products, Inc. Pate H.C. Sharp Co. Pate Curb Gaus-Scott Co. Patterson Pumps Echelmeier Co. Patterson-Kelley Hughes Machinery Co. Peco E.J. Taff Sales Co. Peerless Debco Equipment Co., Inc. Johnstone Supply National Sales Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Rollie Johnson, Inc. (RJI) Pelco Dynamic Controls Inc. Dynamic Controls Inc. Penn Separator Trabue Industrial Systems Trabue Industrial Systems Penn/Barry Gaus-Scott Co. PEP Midwest Machinery Co. Midwest Machinery Co. Perfection PermAlert Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Perma-Pipe Rhodes Equipment Co. Permatite AC Systems, Inc. AC Systems, Inc. Peterson Equipment Company Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Petra Midwest Machinery Co. Midwest Machinery Co. Phoenix Controls Friemel-Love Co. Polar H.C. Sharp Co. Polymer Adhesive AC Systems, Inc. AC Systems, Inc. Pool Pak Trane Trane PortaFab R.R. Waites Co., Inc. RamAir, Inc. RamAir, Inc. Pottorff Gaus-Scott Co. Power Flame Behrmann Co. Behrmann Co. Powered Aire, Inc. Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Precision Air Products RamAir, Inc. RamAir, Inc. Precision Boiler Behrmann Co. Behrmann Co. Precision Boilers LLC Control Products, Inc. PRICE Industries Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Proco Rhodes Equipment Co. Rhodes Equipment Co. Promax (Amprobe) Koch Air, LLC-Parts & Supplier Division Pulsafeeder Quality Water Treatment, Inc. Quality Water Treatment, Inc. Purafil, Inc. R.R. Waites Co., Inc. Pure Engineered Thermal Systems, Inc. (ETS) Pure Air Technologies Nation-Wide Refrigeration Pure EarthLabs Quality Water Treatment, Inc. Quality Water Treatment, Inc. Puroflux Echelmeier Co. Q Mark Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division

66

Manufacturer Manufacturer Rep. Distributor

Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Q-Mark Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Q-Sox Quality Water Treatment Quality Water Treatment, Inc. Quality Water Treatment, Inc. Rawal Valve Rollie Johnson, Inc. (RJI) Ray Burner St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Raymon Donco AC Systems, Inc. AC Systems, Inc. Raymond-Donco Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Raymon-Donco Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Raypak Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Raywall Cape WinAir Co. AC Systems, Inc. H.C. Sharp Co. RBI St. Louis Boiler Supply Co. Comfort Sales Agency, Inc. RECO, USA Behrmann Co. Behrmann Co. Recold Midwest Machinery Co. Midwest Machinery Co. Reddi Heat Co. Gaus-Scott Co. Refrigerating Specialties Nation-Wide Refrigeration Refrigerating Specialties Nation-Wide Refrigeration, Inc. State Mechanical Services, Inc. Reimers Electra Steam Comfort Sales Agency, Inc. Reliable Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Reliable Controls Automation Solutions Group Automation Solutions Group Reliable Products Gaus-Scott Co. Magary Sales, Inc. RenewAire Commair Inc Langendorf Supply Co., Inc. Commair, Inc. Reotemp St. Louis Boiler Supply Co. Replacement & Retrofit Pero Sales, Inc. Research Products Koch Air, LLC-Parts & Supplier Division REYMSA Behrmann Co. Behrmann Co. Reznor Cape WinAir Co. Crescent Parts & Equipment Co., Inc. Rickard Rollie Johnson, Inc. (RJI) Rite Engineering Behrmann Co. Behrmann Co. Rittling Engineered Thermal Systems, Inc. (ETS) Roberts-Gordon Co-Ray Vac AC Systems, Inc. AC Systems, Inc. Roof Products & Systems Gaus-Scott Co. Rosemex Custom Product Solutions, Inc. Rollie Johnson, Inc. (RJI) Roto-Twist Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Rovanco Piping Debco Equipment Co., Inc. Ruffneck HVAC Solutions, Inc. Runtal Thermal Mechanics, Inc. Rupp Air Management Systems Ruskin Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Ruskin Sound Control Russell Pump Control Products, Inc. S&P Ventilation Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc S.T.Johnson Debco Equipment Co., Inc. Samsung Commair, Inc H.C. Sharp Co. Engineered Thermal Systems, Inc. (ETS)

Sanyo Mead O'Brien, Inc. Mead O'Brien, Inc. Schebler Stacks Hughes Machinery Co. Hughes Machinery Co. Schneider Electric C & C Group Dynamic Controls Inc. Dynamic Controls Inc. Schott Echelmeier Co. Schwank Koch Air, LLC-Carrier Division Koch Air, LLC-Carrier Division Rollie Johnson, Inc. (RJI) Seasons 4 H.C. Sharp Co. Seasons-4 Security Chimney Midwest Machinery Co. Midwest Machinery Co. Seibu Giken (SG America) Friemel-Love Co. Seiho Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Selkirk Metalbestos Behrmann Co. Behrmann Co. SEMCO Gaus-Scott Co. Rollie Johnson, Inc. (RJI) Semco Inc. Sensus Mead O'Brien, Inc. Mead O'Brien, Inc. Seresco Thermal Mechanics, Inc. Shank Nation-Wide Refrigeration, Inc. State Mechanical Services, Inc.

67

Manufacturer Manufacturer Rep. Distributor

Sheet Metal Connectors Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Shipco Pump Debco Equipment Co., Inc. Shpco Pump Siemens St. Louis Boiler Supply Co. Controlco Controlco Siemens Siemens Building Technologies Sierra Fresh Air Systems Engineered Thermal Systems, Inc. (ETS) Sigma, Inc. AC Systems, Inc. AC Systems, Inc. Sisco Mead O'Brien, Inc. Mead O'Brien, Inc. Skidmore Behrmann Co. Behrmann Co. Slant Fin E.J. Taff Sales Co. Smardt Chillers Midwest Machinery Co. Midwest Machinery Co. Smith Cast Iron Boiler Co. Comfort Sales Agency, Inc. Snap-Rite Cape WinAir Co. Solar Panels Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Sondex, Inc. Behrmann Co. Behrmann Co. Soudal AC Systems, Inc. Sourcetec Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Southwark-Metal Fittings Koch Air, LLC-Parts & Supplier Division Space-Ray Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Spence St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Spence Engineering, Inc. Control Products, Inc. Spencer Turbine R.R. Waites Co., Inc. Spinnaker Industries Custom Product Solutions, Inc. Spirax-Sarco HVAC Solutions, Inc. Spirotherm Comfort Sales Agency, Inc. Sporlan Valve Co. Crescent Parts & Equipment Co., Inc. Spot-Cooler Electronic Support Systems Spring Air Systems R.R. Waites Co., Inc. Square D C & C Group Dynamic Controls Inc. Dynamic Controls Inc. Midwest Machinery Co. Midwest Machinery Co. SSI Control Products, Inc. Statemech State Mechanical Services, Inc. Stellar Energy systems Engineered Thermal Systems, Inc. (ETS) Stentofon Dynamic Controls Inc. Dynamic Controls Inc. Steriflow Hughes Machinery Co. Steril-Aire HVAC Solutions, Inc. Thermal Mechanics, Inc. Sterling Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Pero Sales, Inc. Rollie Johnson, Inc. (RJI) Sterling Div of Mestek Co. Sterling HVAC Commair, Inc Commair, Inc. Commair, Inc. Sterling Radiator Co. Commair, Inc. Sterling, Inc. Comfort Sales Agency, Inc. Strion Air R.R. Waites Co., Inc. Strobic Air Corp. Friemel-Love Co. Stulz Rollie Johnson, Inc. (RJI) Suburban Manufacturing Co. Commair, Inc. Super Radiator Coils Rollie Johnson, Inc. (RJI) Superior Boiler Works Comfort Sales Agency, Inc. Superior Radiant Products Superior Rex HVAC Solutions, Inc. Suscon Stacks Hughes Machinery Co. Swartwout Pero Sales, inc. Systecon, Inc. Friemel-Love Co. TAC Controlco TAC I/Net Dynamic Controls Inc. Dynamic Controls Inc. TAC Vista TAC/Invensys/ C & C Group TACO, Inc. St. Louis Boiler Supply Co. Behrmann Co. Behrmann Co. TCS-Basys Controlco Controlco Technical Air Products RamAir, Inc. RamAir, Inc. Technical Systems/RAE Corp Pero Sales, Inc. Tecumseh Products Cape WinAir Co. Tecumseh Products Co. Mechanical Supply Co., Inc. Tek-Air Pero Sales, Inc. Tekmar Control Systems Comfort Sales Agency, Inc. Temprite Pero Sales, Inc. Temspec Engineered Thermal Systems, Inc. (ETS)

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Manufacturer Manufacturer Rep. Distributor

Trane Trane Temtrol Custom Product Solutions, Inc. Temtrol Coils H.C. Sharp Co. Testo St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Thermaflex Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Therma-Flo OZ Saver Crescent Parts & Equipment Co., Inc. Thermal Core Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Thermal Products Gaus-Scott Co. Thermon Echelmeier Co. Thomas C. Wilson St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Thrush Co. Hughes Machinery Co. Thrush Pump Debco Equipment Co., Inc. Thy Curb Custom Product Solutions, Inc. Tigerflow Behrmann Co. Behrmann Co. Titus Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Tjernlund St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. TMI Custom Systems Trane` Trane Topog-E St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Toshiba Automation Solutions Group Automation Solutions Group Totaline Koch Air, LLC-Parts & Supplier Division Totaline Star Tower Tech Thermal Mechanics, Inc. Tox-Alert R.R. Waites Co., Inc. Trane Trane Trane Trend Controls Midwest Machinery Co. Midwest Machinery Co. Trerice Control Products, Inc. St. Louis Boiler Supply Co. Trerice, Weksler Mead O'Brien, Inc. Mead O'Brien, Inc. Tri State Industries Rhodes Equipment Co. Rhodes Equipment Co. Triad Boilers Hughes Machinery Co. TriaTek Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Trion Rollie Johnson, Inc. (RJI) Trox Rollie Johnson, Inc. (RJI) Turbonics, Inc. Behrmann Co. Behrmann Co. Tutco Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Tuttle & Bailey Rollie Johnson, Inc. (RJI) Twin City Fan Rollie Johnson, Inc. (RJI) Twin City Fan & Blower Co. Pero Sales, Inc. Twin City Hose Behrmann Co. Behrmann Co. Gaus-Scott Co. Tyton Hellermann AC Systems, Inc. AC Systems, Inc. U.S. Distributing, Inc. Unico Crescent Parts & Equipment Co., Inc. Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Unilux Boiler Hughes Machinery Co. United Air Specialists R.R. Waites Co., Inc. United Cool Air Thermal Mechanics, Inc. United Enertech AC Systems, Inc. Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc USA Coil & Air HVAC Solutions, Inc. UV Resources RamAir, Inc. RamAir, Inc. UVDI Custom Product Solutions, Inc. Valent Rollie Johnson, Inc. (RJI) Van Packer Trabue Industrial Systems Trabue Industrial Systems Vapco - Garman Products Cape WinAir Co. VAW Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Venmar Thermal Mechanics, Inc. Venmar (CES Group) Vent Products Gaus-Scott Co. Ventaire Ventrol (CES Group) Thermal Mechanics, Inc. Veris C & C Group Automation Solutions Group Automation Solutions Group Controlco Controlco Vibration Eliminator Kuhlmann Supply Co Inc Kuhlmann Supply Co Inc Vibration Eliminator Co. Commair, Inc. Echelmeier Co. Viega Crescent Parts & Equipment Co., Inc. Viking Nation-Wide Refrigeration, Inc. Viledon R.R. Waites Co., Inc. Vilter Nation-Wide Refrigeration, Inc. State Mechanical Services, Inc. VRTX Echelmeier Co. Vulcan Radiator Corp. H.C. Sharp Co. Ware Hughes Machinery Co. Warren H.C. Sharp Co. Warren Controls Hughes Machinery Co.

69

Manufacturer Manufacturer Rep. Distributor

Warren Manufacturing Gaus-Scott Co. Water Furnace Rollie Johnson, Inc. (RJI) Waterlink Technologies Quality Water Treatment, Inc. Quality Water Treatment, Inc. Watson McDaniel St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Wattmaster Controls, Inc. AC Systems, Inc. Watts St. Louis Boiler Supply Co. Mead O'Brien, Inc. Mead O'Brien, Inc. Watts Radiant Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Weather Rite H.C. Sharp Co. Webco (CES Group) Thermal Mechanics, Inc. Webster Engineering Comfort Sales Agency Comfort Sales Agency, Inc. Webster Heating Products St. Louis Boiler Supply Co. St. Louis Boiler Supply Co. Weil Mc Lain Specified Systems Trabue Industrial Systems Weil McLain Mechanical Supply Co., Inc. Weil Pump Debco Equipment Co., Inc. Weiss Instruments Behrmann Co. Behrmann Co. Wessels Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Westinghouse Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Whalen Rollie Johnson, Inc. (RJI) Wheatley Midwest Machinery Co. Midwest Machinery Co. White-Rodgers Crescent Parts & Equipment Co., Inc. Koch Air, LLC-Parts & Supplier Division Mechanical Supply Co., Inc. Williams H.C, Sharp Co. H.C. Sharp Co. WILO Mechanical Supply Co., Inc. Wing Co. Friemel-Love Co. Winters St. Louis Boiler Supply Co. Winters Instruments Blackmore & Glunt, Inc. Blackmore & Glunt, Inc. Wirsbo Mechanical Supply Co., Inc. WITT Cape WinAir Co. Xetex Engineered Thermal Systems, Inc. (ETS) Yarway Rhodes Equipment Co. Rhodes Equipment Co. Yaskawa AC Systems, Inc. AC Systems, Inc. Automation Solutions Group Automation Solutions Group Custom Product Solutions, Inc. York State Mechanical Services, Inc. Nation-Wide Refrigeration York Int. Corp Engineered Thermal Systems, Inc. (ETS) York Int. Corp. York Shipley Boilers Hughes Machinery Co. Young Regulator Langendorf Supply Co., Inc. Langendorf Supply Co., Inc. Zone Perfect