Heat Pump Sizing Worksheet(Printed 05/07/2023)

CAUTION: Small House Floor Area

INPUTS OUTPUTSHouse Characteristics 0

0 0 Result

Foundation Type Heat Pump Size Balance Point (deg F)Stories Above Grade 1.5 ton too large

Insulation Levels 2.0 Ton too largeAttic 2.5 Ton too largeWall 3.0 Ton too largeFloor 3.5 Ton too large(not applicable) 4.0 Ton too large(not applicable) 5.0 Ton too large

WindowsWindow Type(not applicable)

Whole House Air LeakageInfiltration Level

Duct Tightness (ducts must be insulated)Duct Tightness

Selected Heat Pump UnitManufacturerOutdoor Unit Model Number

Job InformationContractor CompanyProject Name

Project Address

House UA (btu/hr/degF)Heated Floor Area (sq.ft.)

Window Area (sq.ft.)

Heating Output (Btu/hr @ 47°F)

5 ton 4 ton 3.5 ton 3 ton 2.5 ton 2 ton 1.5 ton-10

0

10

20

30

40

50

At 30°FHeat Pump Capacity House Heat Load

kBtu

/hr

House Floor Area (sqft) 0Window Area (sqft) 0 #DIV/0!

1Foundation Type

Component UA'sFoundation Type Ceiling AG WallCrawlspace Crawlspace 0 0Heated Basement Heated Basement 0 0Unheated Basement Unheated Basement 0 0Slab on Grade Slab on Grade 0 0

Basement3Stories Above Grade

1 1 01.5 1.5 0

2 2 02.5 2.5 0

3 3 0

1AtticR Value Component u-valueR-7 0.102 9.8R-11 0.075 13.3R-19 0.049 20.4R-24 0.041 24.4R-30 0.036 27.8R-38 0.031 32.3R-49 0.027 37.0

1WallsR Value Component u-valueR-0 0.302 3.3R-11 0.089 11.2R-19 0.068 14.7

1Floors over Crawlspace and Unheated BasementsR Value Component u-valueR-0 0.125 8.0R-11 0.053 18.9R-19 0.039 25.6

Stories Above Grade

Foundation & Ceiling Area

R-30 0.028 35.7R-38 0.025 40.0

1Basement Walls (7-ft below grade)R Value U-Factor (wall) F-Factor (slab)R-0 0.193 0.46R-11 0.054 0.56R-19 0.037 0.57

1Slab On GradeInsulation Levels F-ValueUninsulated 0.73R-5 Perimeter 0.58R-10 Perimeter 0.54R-10 Full Under-slab 0.36

1WindowsType u-valueSingle Pane w/ Metal Frame 1.1Double Pane w/ Metal Frame 0.75Double Pane w/ Thermally broken 0.65Double Pane Vinyl or Wood Frame - 0.55Double Pane Vinyl or Wood Frame - 0.4User-Entered Window U-Value 0

4Infiltration Levels0.35 ACH (tight) 0.35 0.00630.45 ACH (normal) 0.45 0.00810.55 ACH (leaky) 0.55 0.00990.65 ACH (very leaky) 0.65 0.0117

1Duct TightnessLeaky 25%Normal 20%Tight 15%All Ducts Inside 3%

70 Space Heat Setpoint (deg F)8 Floor Height

0.95 Assumed perimeter ratio vs square geometry2500 Assumed internal gains (btu/hr)

Component UA'sTotal UA

BG Wall Floor Window ACH0 0 0 0 00 0 0 0 00 0 0 0 00 0 0 0 0

Basement No BasementBelow Grade Above Grade Above Grade

Perimeter (ft) Wall Area Floor Area Perimeter Wall Area Floor Area0 0 0 0 0 0 00 0 0 0 0 0 00 0 0 0 0 0 00 0 0 0 0 0 00 0 0 0 0 0 0

House UA (btu/hr/F) Required HP Capacity Equation0 slope x ODT +

0 x ODT +ODT House Heat Loss ( Required HP Capacity (btu/hr)25 (2,500) (3,333)26 (2,500) (3,333)27 (2,500) (3,333)28 (2,500) (3,333)29 (2,500) (3,333)30 (2,500) (3,333)31 (2,500) (3,333)32 (2,500) (3,333)33 (2,500) (3,333)34 (2,500) (3,333)35 (2,500) (3,333)

Foundation & Ceiling Area

Assumed perimeter ratio vs square geometryAssumed internal gains (btu/hr)

No Basement Assumed Window MixAbove Grade Below Grade Above Grade

Perimeter Wall Area % sqft % sqft0 0 1 25% 0 75% 00 0 1.5 20% 0 80% 00 0 2 15% 0 85% 00 0 2.5 10% 0 90% 00 0 3 8% 0 92% 0

Required HP Capacity Equationintercept = Capacity House Balance Point (3,333) = Capacity #DIV/0! deg F

Stories Above Grade

LennoxODT 1.5 ton 2 ton 2.5 ton 3 ton 3.5 ton 4 ton

65 21 28 35 44 52 5760 20 27 33 41 50 5455 19 25 31 39 47 5150 17 24 29 37 45 4847 17 23 28 35 43 4745 16 22 27 34 41 4540 14 19 23 29 37 3935 12 17 20 25 32 3330 12 16 19 24 31 3225 11 16 18 23 30 3120 10 15 17 22 28 3017 10 15 17 21 28 3015 10 14 16 20 27 2910 9 13 14 18 24 26

5 8 11 13 16 22 230 7 10 11 14 19 20

-5 6 9 10 12 16 17-10 5 7 8 10 14 15-15 4 6 7 8 11 12-20 3 4 5 6 8 9

20.819.718.617.516.816.014.112.111.611.010.510.1

9.68.67.66.75.84.94.0

PX−018 with [CBX27UH−018] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 1.19 20.7 6.1 60 16 1.18 19.6 5.7 55 13 1.16 18.5 5.4 50 10 1.15 17.4 5.1 47 8 1.14 16.7 4.9 45 7 1.13 15.9 4.7 40 4 1.10 14.0 4.1 35 2 1.08 12.1 3.5 30 −1 1.07 11.5 3.4 25 −4 1.06 10.9 3.2 20 −7 1.05 10.4 3.0 17 −8 1.04 10.0 2.9 15 −9 1.04 9.6 2.8 10 −12 1.02 8.5 2.5 5 −15 .95 7.5 2.2 0 −18 .89 6.6 1.9 −5 −21 .82 5.7 1.7 −10 −23 .76 4.8 1.4 −15 −26 .69 3.9 1.1

3.0

28.326.925.524.123.222.219.516.816.215.715.114.714.212.811.410.0

8.67.25.84.4

34.732.931.129.228.126.723.319.919.118.317.517.016.214.412.811.3

9.78.26.7

−20 −29 .63 3.0 .9

HPX−024 with [CBX26UH−024] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 1.55 28.1 8.2 60 16 1.53 26.7 7.8 55 13 1.51 25.3 7.4 50 10 1.49 23.9 7.0 47 8 1.48 23.1 6.8 45 7 1.47 22.0 6.4 40 4 1.44 19.4 5.7 35 2 1.41 16.7 4.9 30 −1 1.40 16.2 4.7 25 −4 1.38 15.6 4.6 20 −7 1.36 15.1 4.4 17 −8 1.35 14.7 4.3 15 −9 1.34 14.2 4.2 10 −12 1.32 12.8 3.8 5 −15 1.24 11.4 3.3 0 −18 1.15 10.0 2.9 −5 −21 1.07 8.6 2.5 −10 −23 .98 7.2 2.1 −15 −26 .90 5.8 1.7 −20 −29 .81 4.4 1.3

HPX−030 with [CBX26UH−030] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 1.83 34.8 10.2 60 16 1.81 33.0 9.7 55 13 1.78 31.2 9.1 50 10 1.75 29.3 8.6 47 8 1.73 28.2 8.3 45 7 1.71 26.8 7.9 40 4 1.68 23.5 6.9 35 2 1.64 20.1 5.9 30 −1 1.62 19.3 5.7 25 −4 1.59 18.5 5.4 20 −7 1.57 17.6 5.2 17 −8 1.55 17.1 5.0 15 −9 1.54 16.4 4.8 10 −12 1.51 14.5 4.2 5 −15 1.41 13.0 3.8 0 −18 1.32 11.4 3.3 −5 −21 1.22 9.8 2.9 −10 −23 1.12 8.3 2.4 −15 −26 1.03 6.7 2.0

5.1

43.741.439.136.735.333.629.525.324.223.122.021.320.418.016.114.212.210.3

8.46.4

52.349.747.244.643.141.236.631.930.729.628.527.826.824.221.618.916.313.611.0

−20 −29 .93 5.1 1.5

HPX−036 with [CBX26UH−037] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 2.29 43.6 12.8 60 16 2.25 41.3 12.1 55 13 2.21 39.0 11.4 50 10 2.17 36.7 10.8 47 8 2.15 35.3 10.3 45 7 2.12 33.6 9.8 40 4 2.05 29.4 8.6 35 2 1.99 25.3 7.4 30 −1 1.97 24.2 7.1 25 −4 1.94 23.1 6.8 20 −7 1.92 22.0 6.4 17 −8 1.91 21.4 6.3 15 −9 1.89 20.4 6.0 10 −12 1.86 18.1 5.3 5 −15 1.74 16.2 4.7 0 −18 1.62 14.2 4.2 −5 −21 1.50 12.3 3.6 −10 −23 1.38 10.3 3.0 −15 −26 1.27 8.4 2.5 −20 −29 1.15 6.4 1.9

HPX−042 with [CBX26UH−042] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 3.13 53.0 15.5 60 16 3.08 50.4 14.8 55 13 3.02 47.8 14.0 50 10 2.97 45.2 13.2 47 8 2.93 43.7 12.8 45 7 2.90 41.8 12.3 40 4 2.82 37.1 10.9 35 2 2.73 32.4 9.5 30 −1 2.70 31.2 9.1 25 −4 2.66 30.0 8.8 20 −7 2.63 28.9 8.5 17 −8 2.60 28.2 8.3 15 −9 2.58 27.2 8.0 10 −12 2.53 24.6 7.2 5 −15 2.37 21.9 6.4 0 −18 2.21 19.2 5.6 −5 −21 2.04 16.5 4.8 −10 −23 1.88 13.8 4.0 −15 −26 1.72 11.1 3.3

8.3

56.954.151.348.546.844.639.033.432.431.430.429.828.725.923.120.217.414.611.8

9.0

66.563.360.156.955.052.446.139.838.637.536.435.734.431.327.824.421.017.614.2

−20 −29 1.56 8.5 2.5

HPX−048 with [CBX26UH−048] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 3.21 56.9 16.7 60 16 3.16 54.1 15.9 55 13 3.11 51.3 15.0 50 10 3.06 48.6 14.2 47 8 3.02 46.9 13.7 45 7 2.99 44.7 13.1 40 4 2.90 39.1 11.5 35 2 2.81 33.5 9.8 30 −1 2.78 32.6 9.6 25 −4 2.75 31.7 9.3 20 −7 2.72 30.8 9.0 17 −8 2.71 30.3 8.9 15 −9 2.69 29.2 8.6 10 −12 2.63 26.4 7.7 5 −15 2.47 23.5 6.9 0 −18 2.30 20.6 6.0 −5 −21 2.13 17.7 5.2 −10 −23 1.96 14.8 4.3 −15 −26 1.79 12.0 3.5 −20 −29 1.63 9.1 2.7

PX−060 with [CBX26UH−060] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 4.02 66.8 19.6 60 16 3.94 63.5 18.6 55 13 3.86 60.3 17.7 50 10 3.78 57.1 16.7 47 8 3.73 55.2 16.2 45 7 3.67 52.6 15.4 40 4 3.51 46.2 13.5 35 2 3.36 39.9 11.7 30 −1 3.33 38.7 11.3 25 −4 3.29 37.6 11.0 20 −7 3.26 36.5 10.7 17 −8 3.24 35.8 10.5 15 −9 3.21 34.5 10.1 10 −12 3.13 31.3 9.2 5 −15 2.93 27.9 8.2 0 −18 2.73 24.4 7.2 −5 −21 2.54 21.0 6.2 −10 −23 2.34 17.6 5.2 −15 −26 2.14 14.2 4.2

10.7 −20 −29 1.95 10.7 3.1

Lennox Lennox5 ton ODT 5 ton 4 ton 3.5 ton 3 ton

67 65 66,533 56,900 52,325 43,700 63 60 63,333 54,075 49,725 41,383 60 55 60,117 51,275 47,200 39,067 57 50 56,933 48,450 44,625 36,700 55 47 54,983 46,750 43,100 35,300 52 45 52,450 44,550 41,225 33,617 46 40 46,100 38,950 36,550 29,450 40 35 39,750 33,375 31,875 25,267 39 30 38,617 32,400 30,725 24,167 38 25 37,533 31,400 29,575 23,083 36 20 36,433 30,425 28,450 21,983 36 17 35,733 29,825 27,775 21,300 34 15 34,450 28,700 26,750 20,383 31 10 31,250 25,875 24,175 18,033 28 5 27,833 23,050 21,550 16,117 24 0 24,400 20,200 18,875 14,150 21 -5 20,967 17,400 16,250 12,217 18 -10 17,567 14,550 13,600 10,267 14 -15 14,150 11,775 10,950 8,350 11 -20 10,700 8,950 8,325 6,367

PX−018 with [CBX32MV−018/024] [CBX40UHV−024] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 1.22 20.8 6.1 60 16 1.20 19.7 5.8 55 13 1.18 18.6 5.5 50 10 1.17 17.5 5.1 47 8 1.16 16.8 4.9 45 7 1.14 16.1 4.7 40 4 1.12 14.1 4.1 35 2 1.09 12.2 3.6 30 −1 1.08 11.6 3.4 25 −4 1.07 11.1 3.3 20 −7 1.06 10.5 3.1 17 −8 1.05 10.1 3.0 15 −9 1.05 9.7 2.8 10 −12 1.03 8.6 2.5 5 −15 .96 7.7 2.3 0 −18 .90 6.7 2.0 −5 −21 .83 5.8 1.7 −10 −23 .77 4.9 1.4 −15 −26 .70 4.0 1.2

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

Lennox 14hpx Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)

Capa

ctiy

(Btu

/hr)

−20 −29 .63 3.0 .9

HPX−024 with [CBX27UH−024] HPX−024 with *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW *Outdoor Temperature F 65 18 1.46 28.1 8.2 65 60 16 1.44 26.6 7.8 60 55 13 1.43 25.2 7.4 55 50 10 1.42 23.8 7.0 50 47 8 1.41 22.9 6.7 47 45 7 1.41 21.9 6.4 45 40 4 1.39 19.2 5.6 40 35 2 1.38 16.6 4.9 35 30 −1 1.37 16.0 4.7 30 25 −4 1.35 15.4 4.5 25 20 −7 1.34 14.8 4.3 20 17 −8 1.34 14.4 4.2 17 15 −9 1.33 13.8 4.0 15 10 −12 1.32 12.4 3.6 10 5 −15 1.24 11.0 3.2 5 0 −18 1.15 9.7 2.8 0 −5 −21 1.06 8.4 2.5 −5 −10 −23 .98 7.0 2.1 −10 −15 −26 .89 5.7 1.7 −15 −20 −29 .80 4.3 1.3 −20

HPX−030 with [CBX27UH−030] HPX−030 with *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW *Outdoor Temperature F 65 18 1.83 34.4 10.1 65 60 16 1.80 32.6 9.6 60 55 13 1.78 30.7 9.0 55 50 10 1.75 28.9 8.5 50 47 8 1.74 27.8 8.1 47 45 7 1.73 26.4 7.7 45 40 4 1.71 23.0 6.7 40 35 2 1.69 19.6 5.7 35 30 −1 1.66 18.8 5.5 30 25 −4 1.63 17.9 5.2 25 20 −7 1.61 17.1 5.0 20 17 −8 1.59 16.6 4.9 17 15 −9 1.58 15.9 4.7 15 10 −12 1.56 14.0 4.1 10 5 −15 1.46 12.5 3.7 5 0 −18 1.36 11.0 3.2 0 −5 −21 1.26 9.5 2.8 −5 −10 −23 1.16 8.0 2.3 −10 −15 −26 1.06 6.5 1.9 −15

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

Lennox 14hpx Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)Ca

pacti

y (B

tu/h

r)

−20 −29 .96 5.0 1.5 −20

HPX−036 with [CBX27UH−036] HPX−036 with *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW *Outdoor Temperature F 65 18 2.24 43.4 12.7 65 60 16 2.20 41.1 12.0 60 55 13 2.17 38.7 11.3 55 50 10 2.13 36.4 10.7 50 47 8 2.11 35.0 10.3 47 45 7 2.08 33.3 9.8 45 40 4 2.02 29.2 8.6 40 35 2 1.95 25.0 7.3 35 30 −1 1.93 23.9 7.0 30 25 −4 1.92 22.8 6.7 25 20 −7 1.90 21.7 6.4 20 17 −8 1.89 21.0 6.2 17 15 −9 1.87 20.1 5.9 15 10 −12 1.84 17.8 5.2 10 5 −15 1.72 15.9 4.7 5 0 −18 1.60 13.9 4.1 0 −5 −21 1.48 12.0 3.5 −5 −10 −23 1.37 10.1 3.0 −10 −15 −26 1.25 8.2 2.4 −15 −20 −29 1.13 6.3 1.8 −20

HPX−042 with [CBX27UH−042] [CBX40UHV−042] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 3.34 51.9 15.2 60 16 3.29 49.3 14.4 55 13 3.23 46.8 13.7 50 10 3.17 44.2 13.0 47 8 3.14 42.7 12.5 45 7 3.11 40.8 12.0 40 4 3.04 36.2 10.6 35 2 2.96 31.5 9.2 30 −1 2.92 30.4 8.9 25 −4 2.88 29.2 8.6 20 −7 2.83 28.1 8.2 17 −8 2.81 27.4 8.0 15 −9 2.79 26.4 7.7 10 −12 2.73 23.8 7.0 5 −15 2.56 21.2 6.2 0 −18 2.38 18.6 5.5 −5 −21 2.21 16.0 4.7 −10 −23 2.04 13.4 3.9 −15 −26 1.86 10.8 3.2

−20 −29 1.69 8.2 2.4

HPX−048 with [CBX27UH−048] PX−048 with *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW *Outdoor Temperature F 65 18 3.46 57.9 17.0 65 60 16 3.39 54.9 16.1 60 55 13 3.33 51.9 15.2 55 50 10 3.26 48.9 14.3 50 47 8 3.22 47.1 13.8 47 45 7 3.17 44.9 13.2 45 40 4 3.03 39.2 11.5 40 35 2 2.90 33.5 9.8 35 30 −1 2.88 32.3 9.5 30 25 −4 2.86 31.1 9.1 25 20 −7 2.85 29.9 8.8 20 17 −8 2.84 29.1 8.5 17 15 −9 2.81 27.9 8.2 15 10 −12 2.74 24.9 7.3 10 5 −15 2.57 22.2 6.5 5 0 −18 2.40 19.5 5.7 0 −5 −21 2.22 16.8 4.9 −5 −10 −23 2.05 14.1 4.1 −10 −15 −26 1.88 11.4 3.3 −15 −20 −29 1.70 8.7 2.5 −20

PX−060 with [CBX27UH−060] PX−060 with *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW *Outdoor Temperature F 65 18 4.08 67.3 19.7 65 60 16 4.00 64.1 18.8 60 55 13 3.91 60.8 17.8 55 50 10 3.82 57.6 16.9 50 47 8 3.77 55.6 16.3 47 45 7 3.71 53.0 15.5 45 40 4 3.57 46.7 13.7 40 35 2 3.43 40.3 11.8 35 30 −1 3.38 39.1 11.5 30 25 −4 3.32 37.9 11.1 25 20 −7 3.27 36.8 10.8 20 17 −8 3.24 36.0 10.6 17 15 −9 3.20 34.7 10.2 15 10 −12 3.12 31.5 9.2 10 5 −15 2.92 28.0 8.2 5 0 −18 2.72 24.6 7.2 0 −5 −21 2.53 21.1 6.2 −5 −10 −23 2.33 17.7 5.2 −10 −15 −26 2.14 14.3 4.2 −15

−20 −29 1.94 10.8 3.2 −20

Lennox2.5 ton 2 ton 1.5 ton Lennox 34,740 28,300 20,750 Capacity Equation (between 25 and 35 deg) 32,900 26,883 19,650 slope x ODT + intercept = Capacity 31,060 25,483 18,550 1.5 ton 110.0 x ODT + 8250 = Capacity 29,180 24,050 17,450 2.0 Ton 113.3 x ODT + 12833 = Capacity 28,080 23,233 16,750 2.5 Ton 164.0 x ODT + 14180 = Capacity 26,700 22,150 16,000 3.0 Ton 216.7 x ODT + 17667 = Capacity 23,320 19,467 14,050 3.5 Ton 230.0 x ODT + 23825 = Capacity 19,900 16,783 12,150 4.0 Ton 200.0 x ODT + 26400 = Capacity 19,100 16,233 11,550 5.0 Ton 216.7 x ODT + 32117 = Capacity 18,280 15,667 11,000 17,460 15,117 10,450 16,960 14,717 10,050 16,240 14,200 9,650 14,380 12,767 8,550 12,840 11,400 7,600 11,260 9,983 6,650 9,740 8,600 5,750 8,180 7,200 4,850 6,660 5,817 3,950 5,080 4,417 3,000

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

Lennox 14hpx Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)

Capa

ctiy

(Btu

/hr)

[CBX32M−018/024] C Compressor Motor kW Input Total Output kBtuh kW HPX−024 with [CBX32M−030] 18 1.54 28.4 8.3 *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh 16 1.52 27.0 7.9 65 18 1.47 28.4 13 1.50 25.6 7.5 60 16 1.45 27.0 10 1.48 24.2 7.1 55 13 1.44 25.6 8 1.47 23.4 6.9 50 10 1.43 24.1 7 1.47 22.3 6.5 47 8 1.42 23.3 4 1.44 19.6 5.7 45 7 1.41 22.2 2 1.42 16.9 5.0 40 4 1.40 19.5 −1 1.41 16.4 4.8 35 2 1.38 16.8 −4 1.39 15.8 4.6 30 −1 1.37 16.2 −7 1.37 15.3 4.5 25 −4 1.36 15.7 −8 1.36 14.9 4.4 20 −7 1.35 15.1 −9 1.35 14.4 4.2 17 −8 1.34 14.7 −12 1.34 13.0 3.8 15 −9 1.34 14.2 −15 1.25 11.6 3.4 10 −12 1.33 12.7 −18 1.16 10.1 3.0 5 −15 1.24 11.4 −21 1.08 8.7 2.5 0 −18 1.15 10.0 −23 .99 7.3 2.1 −5 −21 1.07 8.6 −26 .90 5.9 1.7 −10 −23 .98 7.2 −29 .82 4.5 1.3 −15 −26 .89 5.8

−20 −29 .81 4.4

[CBX32M−030] C Compressor Motor kW Input Total Output kBtuh kW HPX−030 with [CBX32M−036] 18 1.89 34.7 10.2 *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh 16 1.86 32.8 9.6 65 18 1.80 35.0 13 1.83 31.0 9.1 60 16 1.78 33.2 10 1.80 29.1 8.5 55 13 1.75 31.3 8 1.78 28.0 8.2 50 10 1.73 29.4 7 1.77 26.7 7.8 47 8 1.72 28.3 4 1.74 23.3 6.8 45 7 1.71 26.9 2 1.71 19.9 5.8 40 4 1.69 23.5 −1 1.68 19.1 5.6 35 2 1.67 20.0 −4 1.65 18.3 5.4 30 −1 1.64 19.2 −7 1.62 17.5 5.1 25 −4 1.62 18.4 −8 1.60 17.0 5.0 20 −7 1.60 17.6 −9 1.59 16.3 4.8 17 −8 1.58 17.1 −12 1.56 14.5 4.2 15 −9 1.57 16.3 −15 1.46 12.9 3.8 10 −12 1.55 14.5 −18 1.36 11.3 3.3 5 −15 1.45 12.9 −21 1.26 9.8 2.9 0 −18 1.35 11.3 −23 1.16 8.2 2.4 −5 −21 1.25 9.8 −26 1.06 6.7 2.0 −10 −23 1.15 8.2

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

Lennox 14hpx Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)

Capa

ctiy

(Btu

/hr)

−29 .96 5.1 1.5 −15 −26 1.05 6.7 −20 −29 .95 5.1

[CBX32M−036] C Compressor Motor kW Input Total Output kBtuh kW HPX−036 with [CBX32M−042] 18 2.22 43.9 12.9 *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh 16 2.18 41.6 12.2 65 18 2.24 43.8 13 2.15 39.3 11.5 60 16 2.20 41.5 10 2.11 36.9 10.8 55 13 2.17 39.2 8 2.09 35.5 10.4 50 10 2.13 36.8 7 2.07 33.8 9.9 47 8 2.11 35.4 4 2.01 29.6 8.7 45 7 2.08 33.8 2 1.94 25.4 7.4 40 4 2.02 29.6 −1 1.93 24.3 7.1 35 2 1.95 25.4 −4 1.91 23.3 6.8 30 −1 1.94 24.3 −7 1.89 22.2 6.5 25 −4 1.92 23.2 −8 1.88 21.5 6.3 20 −7 1.90 22.1 −9 1.87 20.6 6.0 17 −8 1.89 21.4 −12 1.83 18.2 5.3 15 −9 1.87 20.5 −15 1.71 16.3 4.8 10 −12 1.84 18.2 −18 1.60 14.3 4.2 5 −15 1.72 16.2 −21 1.48 12.3 3.6 0 −18 1.60 14.3 −23 1.36 10.4 3.0 −5 −21 1.49 12.3 −26 1.25 8.4 2.5 −10 −23 1.37 10.3 −29 1.13 6.4 1.9 −15 −26 1.25 8.4

−20 −29 1.13 6.4

HPX−042 with [CBX32M−048] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh HPX−042 with [CBX32MV−048] [CBX40UHV−048] 65 18 3.39 52.2 kW *Outdoor Temperature F C 60 16 3.33 49.6 15.3 65 18 55 13 3.27 47.1 14.5 60 16 50 10 3.21 44.6 13.8 55 13 47 8 3.18 43.0 13.1 50 10 45 7 3.15 41.2 12.6 47 8 40 4 3.07 36.5 12.1 45 7 35 2 2.99 31.8 10.7 40 4 30 −1 2.94 30.7 9.3 35 2 25 −4 2.90 29.6 9.0 30 −1 20 −7 2.86 28.5 8.7 25 −4 17 −8 2.83 27.8 8.4 20 −7 15 −9 2.81 26.8 8.1 17 −8 10 −12 2.75 24.2 7.9 15 −9 5 −15 2.57 21.6 7.1 10 −12 0 −18 2.40 18.9 6.3 5 −15 −5 −21 2.22 16.3 5.5 0 −18 −10 −23 2.05 13.6 4.8 −5 −21 −15 −26 1.87 11.0 4.0 −10 −23

−20 −29 1.70 8.3 3.2 −15 −26 2.4 −20 −29

[CBX32MV−060] [CBX40UHV−060] C Compressor Motor kW Input Total Output kBtuh PX−048 with [CBX32MV−068] 18 3.20 56.7 kW *Outdoor Temperature F C Compressor Motor kW Input 16 3.15 53.9 16.6 65 18 3.31 13 3.10 51.2 15.8 60 16 3.25 10 3.05 48.4 15.0 55 13 3.20 8 3.02 46.7 14.2 50 10 3.14 7 2.98 44.5 13.7 47 8 3.11 4 2.89 38.9 13.0 45 7 3.07 2 2.80 33.4 11.4 40 4 2.98 −1 2.78 32.5 9.8 35 2 2.88 −4 2.76 31.5 9.5 30 −1 2.86 −7 2.74 30.6 9.2 25 −4 2.83 −8 2.72 30.1 9.0 20 −7 2.80 −9 2.70 28.9 8.8 17 −8 2.79 −12 2.65 26.2 8.5 15 −9 2.76 −15 2.48 23.3 7.7 10 −12 2.71 −18 2.31 20.4 6.8 5 −15 2.54 −21 2.14 17.6 6.0 0 −18 2.36 −23 1.97 14.7 5.2 −5 −21 2.19 −26 1.80 11.9 4.3 −10 −23 2.02 −29 1.63 9.0 3.5 −15 −26 1.85

2.6 −20 −29 1.67

[CBX32M−060] C Compressor Motor kW Input Total Output kBtuh kW PX−060 with [CBX32MV−048] [CBX40UHV−048] 18 4.07 66.5 19.5 *Outdoor Temperature F C Compressor Motor kW Input 16 3.99 63.3 18.6 65 18 4.09 13 3.91 60.1 17.6 60 16 4.01 10 3.83 56.9 16.7 55 13 3.93 8 3.79 54.9 16.1 50 10 3.84 7 3.73 52.4 15.4 47 8 3.79 4 3.59 46.0 13.5 45 7 3.73 2 3.45 39.7 11.6 40 4 3.58 −1 3.41 38.6 11.3 35 2 3.43 −4 3.38 37.5 11.0 30 −1 3.39 −7 3.34 36.4 10.7 25 −4 3.35 −8 3.32 35.7 10.5 20 −7 3.31 −9 3.29 34.4 10.1 17 −8 3.29 −12 3.21 31.2 9.1 15 −9 3.25 −15 3.00 27.8 8.1 10 −12 3.17 −18 2.80 24.4 7.2 5 −15 2.97 −21 2.60 21.0 6.2 0 −18 2.77 −23 2.40 17.6 5.2 −5 −21 2.57 −26 2.19 14.1 4.1 −10 −23 2.37

−29 1.99 10.7 3.1 −15 −26 2.17 −20 −29 1.97

Lennox 121% 122% 121% 124% 124% 122%Balance Point 115% 116% 115% 117% 117% 116%

-105.3 109% 110% 110% 111% 111% 110%-142.6 104% 104% 104% 104% 104% 104%-106.8 100% 100% 100% 100% 100% 100%

-96.9 95% 95% 96% 95% 95% 95%-118.1 84% 83% 85% 83% 83% 84%-148.7 72% 71% 74% 72% 71% 72%-163.6 70% 69% 71% 68% 68% 70%

68% 67% 69% 65% 65% 67%66% 65% 66% 62% 62% 65%65% 64% 64% 60% 60% 63%63% 61% 62% 58% 58% 61%57% 55% 56% 51% 51% 55%51% 49% 50% 46% 46% 49%44% 43% 44% 40% 40% 43%38% 37% 38% 35% 35% 37%32% 31% 32% 29% 29% 31%26% 25% 25% 24% 24% 25%19% 19% 19% 18% 18% 19%

HPX−024 with [CBX32M−018/024] HPX−024 with kW *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW *Outdoor Temperature F 8.3 65 18 1.54 28.4 8.3 65 7.9 60 16 1.52 27.0 7.9 60 7.5 55 13 1.50 25.6 7.5 55 7.1 50 10 1.48 24.2 7.1 50 6.8 47 8 1.47 23.4 6.9 47 6.5 45 7 1.47 22.3 6.5 45 5.7 40 4 1.44 19.6 5.7 40 4.9 35 2 1.42 16.9 5.0 35 4.7 30 −1 1.41 16.4 4.8 30 4.6 25 −4 1.39 15.8 4.6 25 4.4 20 −7 1.37 15.3 4.5 20 4.3 17 −8 1.36 14.9 4.4 17 4.2 15 −9 1.35 14.4 4.2 15 3.7 10 −12 1.34 13.0 3.8 10 3.3 5 −15 1.25 11.6 3.4 5 2.9 0 −18 1.16 10.1 3.0 0 2.5 −5 −21 1.08 8.7 2.5 −5 2.1 −10 −23 .99 7.3 2.1 −10 1.7 −15 −26 .90 5.9 1.7 −15 1.3 −20 −29 .82 4.5 1.3 −20

HPX−030 with [CBX32MV−024/030] [CBX40UHV−030] kW *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 10.3 65 18 1.85 34.8 10.2 9.7 60 16 1.82 32.9 9.6 9.2 55 13 1.79 31.1 9.1 8.6 50 10 1.77 29.2 8.6 8.3 47 8 1.75 28.1 8.2 7.9 45 7 1.74 26.7 7.8 6.9 40 4 1.71 23.3 6.8 5.9 35 2 1.69 19.9 5.8 5.6 30 −1 1.66 19.1 5.6 5.4 25 −4 1.63 18.3 5.4 5.2 20 −7 1.60 17.5 5.1 5.0 17 −8 1.59 17.0 5.0 4.8 15 −9 1.58 16.3 4.8 4.2 10 −12 1.55 14.4 4.2 3.8 5 −15 1.45 12.9 3.8 3.3 0 −18 1.35 11.3 3.3 2.9 −5 −21 1.25 9.8 2.9 2.4 −10 −23 1.15 8.2 2.4 2.0 −15 −26 1.05 6.7 2.0

1.5 −20 −29 .95 5.1 1.5

HPX−036 with [CBX32MV−036] [CBX40UHV−036] kW *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 12.8 65 18 2.22 43.8 12.8 12.2 60 16 2.19 41.5 12.2 11.5 55 13 2.15 39.2 11.5 10.8 50 10 2.12 36.8 10.8 10.4 47 8 2.09 35.4 10.4 9.9 45 7 2.07 33.7 9.9 8.7 40 4 2.01 29.6 8.7 7.4 35 2 1.94 25.4 7.4 7.1 30 −1 1.93 24.3 7.1 6.8 25 −4 1.91 23.2 6.8 6.5 20 −7 1.89 22.1 6.5 6.3 17 −8 1.88 21.4 6.3 6.0 15 −9 1.87 20.5 6.0 5.3 10 −12 1.83 18.1 5.3 4.7 5 −15 1.71 16.2 4.7 4.2 0 −18 1.60 14.2 4.2 3.6 −5 −21 1.48 12.3 3.6 3.0 −10 −23 1.36 10.3 3.0 2.5 −15 −26 1.25 8.4 2.5 1.9 −20 −29 1.13 6.4 1.9

Compressor Motor kW Input Total Output kBtuh kW 3.32 52.2 15.3 3.26 49.6 14.5 3.21 47.1 13.8 3.16 44.5 13.0 3.12 43.0 12.6 3.10 41.1 12.0 3.02 36.4 10.7 2.95 31.8 9.3 2.91 30.6 9.0 2.87 29.5 8.6 2.83 28.3 8.3 2.80 27.7 8.1 2.78 26.6 7.8 2.72 24.1 7.1 2.55 21.5 6.3 2.38 18.8 5.5 2.20 16.2 4.7 2.03 13.6 4.0 1.86 10.9 3.2

1.68 8.3 2.4

Total Output kBtuh kW 56.1 16.4 53.4 15.6 50.7 14.9 47.9 14.0 46.3 13.6 44.1 12.9 38.6 11.3 33.1 9.7 32.2 9.4 31.3 9.2 30.4 8.9 29.8 8.7 28.8 8.4 26.0 7.6 23.2 6.8 20.3 5.9 17.5 5.1 14.6 4.3 11.8 3.5 9.0 2.6

PX−060 with [CBX32MV−060] [CBX40UHV−060] Total Output kBtuh kW *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 66.3 19.4 65 18 4.06 66.6 19.5 63.1 18.5 60 16 3.98 63.4 18.6 59.9 17.6 55 13 3.90 60.2 17.6 56.7 16.6 50 10 3.83 57.0 16.7 54.8 16.1 47 8 3.78 55.0 16.1 52.3 15.3 45 7 3.72 52.5 15.4 46.0 13.5 40 4 3.58 46.1 13.5 39.6 11.6 35 2 3.44 39.7 11.6 38.5 11.3 30 −1 3.41 38.6 11.3 37.4 11.0 25 −4 3.37 37.6 11.0 36.3 10.6 20 −7 3.34 36.5 10.7 35.6 10.4 17 −8 3.31 35.8 10.5 34.4 10.1 15 −9 3.28 34.5 10.1 31.2 9.1 10 −12 3.20 31.3 9.2 27.8 8.1 5 −15 3.00 27.9 8.2 24.3 7.1 0 −18 2.80 24.5 7.2 20.9 6.1 −5 −21 2.60 21.0 6.2 17.5 5.1 −10 −23 2.39 17.6 5.2 14.1 4.1 −15 −26 2.19 14.2 4.2

10.7 3.1 −20 −29 1.99 10.7 3.1

Lennox made GenericODT 5 ton 4 ton 3.5 ton 3 ton 2.5 ton

124% 65 72,604 58,421 50,990 44,567 37,115 117% 60 69,112 55,521 48,456 42,204 35,150 111% 55 65,602 52,646 45,995 39,841 33,184 104% 50 62,128 49,745 43,486 37,428 31,175 100% 47 60,000 48,000 42,000 36,000 30,000

96% 45 57,236 45,741 40,173 34,283 28,526 84% 40 50,306 39,991 35,617 30,034 24,915 73% 35 43,377 34,267 31,061 25,768 21,261 69% 30 42,140 33,266 29,941 24,646 20,406 66% 25 40,958 32,240 28,820 23,541 19,530 62% 20 39,758 31,239 27,724 22,419 18,654 60% 17 38,994 30,622 27,066 21,722 18,120 58% 15 37,593 29,467 26,067 20,788 17,350 51% 10 34,101 26,567 23,558 18,391 15,363 45% 5 30,373 23,666 21,000 16,436 13,718 40% 0 26,626 20,740 18,393 14,431 12,030 34% -5 22,880 17,865 15,835 12,459 10,406 29% -10 19,169 14,939 13,253 10,470 8,739 24% -15 15,441 12,090 10,671 8,516 7,115 18% -20 11,676 9,189 8,113 6,493 5,427

5 ton 4 ton 3.5 ton 3 ton 2.5 ton0 42 33 30 25 20

(3) (3) (3) (3) (3) (3)

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

Generic HP Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)

Capa

ctiy

(Btu

/hr)

[CBX32M−030] C Compressor Motor kW Input Total Output kBtuh kW 18 1.47 28.4 8.3 16 1.45 27.0 7.9 13 1.44 25.6 7.5 10 1.43 24.1 7.1 8 1.42 23.3 6.8 7 1.41 22.2 6.5 4 1.40 19.5 5.7 2 1.38 16.8 4.9 −1 1.37 16.2 4.7 −4 1.36 15.7 4.6 −7 1.35 15.1 4.4 −8 1.34 14.7 4.3 −9 1.34 14.2 4.2 −12 1.33 12.7 3.7 −15 1.24 11.4 3.3 −18 1.15 10.0 2.9 −21 1.07 8.6 2.5 −23 .98 7.2 2.1 −26 .89 5.8 1.7 −29 .81 4.4 1.3

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

Generic HP Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)

Capa

ctiy

(Btu

/hr)

HPX−036 with [CBX32MV−048] [CBX40UHV−048] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 2.22 43.7 12.8 60 16 2.18 41.3 12.1 55 13 2.15 39.0 11.4 50 10 2.11 36.6 10.7 47 8 2.09 35.2 10.3 45 7 2.07 33.5 9.8 40 4 2.01 29.3 8.6 35 2 1.94 25.1 7.4 30 −1 1.93 24.0 7.0 25 −4 1.91 22.9 6.7 20 −7 1.90 21.8 6.4 17 −8 1.89 21.1 6.2 15 −9 1.88 20.2 5.9 10 −12 1.84 17.8 5.2 5 −15 1.72 15.9 4.7 0 −18 1.61 14.0 4.1 −5 −21 1.49 12.1 3.5 −10 −23 1.37 10.2 3.0 −15 −26 1.25 8.3 2.4 −20 −29 1.14 6.3 1.8

PX−060 with [CBX32MV−068] *Outdoor Temperature F C Compressor Motor kW Input Total Output kBtuh kW 65 18 4.30 65.7 19.3 60 16 4.21 62.6 18.3 55 13 4.12 59.4 17.4 50 10 4.03 56.3 16.5 47 8 3.98 54.4 15.9 45 7 3.91 51.9 15.2 40 4 3.75 45.6 13.4 35 2 3.58 39.3 11.5 30 −1 3.55 38.2 11.2 25 −4 3.51 37.2 10.9 20 −7 3.47 36.1 10.6 17 −8 3.45 35.5 10.4 15 −9 3.41 34.2 10.0 10 −12 3.33 31.0 9.1 5 −15 3.12 27.6 8.1 0 −18 2.91 24.2 7.1 −5 −21 2.70 20.8 6.1 −10 −23 2.49 17.4 5.1 −15 −26 2.28 14.0 4.1

−20 −29 2.07 10.6 3.1

Lennox made Generic2 ton 1.5 ton Lennox made Generic 29,234 22,299 Capacity Equation (between 25 and 35 deg) 27,770 21,116 slope x ODT + intercept = Capacity 26,324 19,934 1.5 ton 118.2 x ODT + 8866 = Capacity 24,844 18,752 2.0 Ton 117.1 x ODT + 13257 = Capacity 24,000 18,000 2.5 Ton 175.2 x ODT + 15150 = Capacity 22,881 17,194 3.0 Ton 221.0 x ODT + 18017 = Capacity 20,109 15,099 3.5 Ton 224.1 x ODT + 23217 = Capacity 17,337 13,057 4.0 Ton 205.3 x ODT + 27106 = Capacity 16,769 12,412 5.0 Ton 236.4 x ODT + 35047 = Capacity 16,184 11,821 15,615 11,230 15,202 10,800 14,669 10,370 13,188 9,188 11,776 8,167 10,313 7,146 8,884 6,179 7,438 5,212 6,009 4,245 4,562 3,224

2 ton 1.5 ton 17 12 0 (3) (3) (3)

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

Generic HP Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)

Capa

ctiy

(Btu

/hr)

-20 -10 0 10 20 30 40 50 60 70 -

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

Generic HP Capacities

5 ton

4 ton

3.5 ton

3 ton

2.5 ton

2 ton

1.5 ton

ODT (deg F)

Capa

ctiy

(Btu

/hr)

GenericBalance Point

-103.2-141.7-105.5

-96.6-118.5-148.2-162.3