Comfort Temps vs KeplerX heat pumps

Measured against models of the same size and duct type, Comfort Temps scores higher on 4 of the 6 ratings. Comfort Temps has 20 outdoor models, KeplerX has 20 outdoor models. Comfort Temps and KeplerX have no QMID on file and are not ranked.

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CompareData as of Oct 11, 2026updated Oct 11, 2026 · sources

Against comparable models

Each cell is the share of same-size, same-type models that the manufacturer’s typical model beats (50% is typical); the higher score is in bold. Raw medians are underneath for context: they depend on which sizes each one makes, so they are not compared.

Comfort Temps and KeplerX on every ratingPeer scores, 0–100 · grey ticks: every ranked manufacturer · shaded: the middle half of each one’s modelsMeasured against models of the same size and duct type, Comfort Temps scores higher on 4 of the 6 ratings.

Comfort Temps
KeplerX
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 11, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Comfort Temps	KeplerX
Efficiency index	49% (higher)median —	42% (higher)median —
COP at 5°F	37% (higher)median 1.89	34% (higher)median 1.80
Capacity retention at 5°F	38%median 72%	41%median 60%
HSPF2	53% (higher)median 9.5	52% (higher)median 8.5
SEER2	59% (higher)median 23.0	58% (higher)median 17.4
EER2	52% (higher)median 12.3	26% (higher)median 10.5
Heating capacity at 5°F	41%median 9,100 Btu/h	46%median 23,200 Btu/h
Outdoor models	20	20
AHRI certifications	20	20

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Comfort Temps	KeplerX
CEE 2025 Tier 1 (Split ASHP)	100%20 models	35%7 models
CEE 2026 Tier 1 (Split ASHP)	100%20 models	35%7 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	90%18 models	25%5 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	60%12 models	0%0 models

Sizes and duct types offered

Models in each peer group, with the efficiency index of those models against the rest of the group.

Side by side, inside each size and duct typeShape: every model of the group · bars: each manufacturer’s middle half, median dot, 10th–90th line · 0 groups where both have models

Comfort Temps
KeplerX
All models of the group

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of Oct 11, 2026

Models per peer group · efficiency index within the group
Size and duct type	Comfort Temps	KeplerX
Ducted, up to 1.5 tons	None	2 · index 34%
Ducted, 2 tons	None	4 · index 50%
Ducted, 2.5–3 tons	None	6 · index 39%
Ducted, 3.5–4.5 tons	None	8 · index 43%
Non-ducted, up to 1.5 tons	16 · index 50%	None
Non-ducted, 2 tons	4 · index 45%	None

Cold-climate and all-around picks, size class by size class

Each manufacturer’s best model on each board in every size and duct type, side by side; the higher score is in bold. Both scores are 0–100 against every model of that size class (the line on each bar is 50, the typical model there), so the two compare fairly even when they make different sizes.

Cold-climate picks

Best cold-climate pick per size and duct type (keeps at least 70% of its heat at 5°F). Qualifies when its capacity retention at 5°F (capacity at 5°F as a share of capacity at 47°F) is at least 70% and Capacity retention at 5°F, COP at 5°F, HSPF2 are all rated. Score = the equal-weight mean of its peer percentiles on Capacity retention at 5°F, COP at 5°F, HSPF2 (share of the other models in its peer group it beats, 0–100), all from one certified pairing: in each duct type a model is sold in, its qualifying pairing of that type with the best score; equal scores (one decimal) go to the higher heating capacity at 5°F.
Size and duct type	Comfort TempsCold-climate score, best model	KeplerXCold-climate score, best model
Ducted, up to 1.5 tons	No models in this size class	None on this board (0 of 2 models qualify)
Ducted, 2 tons	No models in this size class	70.4(50 is the typical model of its size class)K18HVH24WD2R2 of 4 models qualify · AHRI 217894015
Ducted, 2.5–3 tons	No models in this size class	43.5(50 is the typical model of its size class)K18HVH36WD2R1 of 6 models qualify · AHRI 217894016
Ducted, 3.5–4.5 tons	No models in this size class	60.3(50 is the typical model of its size class)K18HVH48WD2R2 of 8 models qualify · AHRI 217894017
Non-ducted, up to 1.5 tons	59.5(50 is the typical model of its size class)CTP-BH122A-Owith ductless indoor unit CTP-BH122A-IAlso listed as CTP-BH122A-O15 of 16 models qualify · AHRI 216472852	No models in this size class
Non-ducted, 2 tons	37.7(50 is the typical model of its size class)CTP-BH242A-Owith ductless indoor unit CTP-BH242A-IAlso listed as CTP-BH242A-O3 of 4 models qualify · AHRI 216472854	No models in this size class

All-around best

Best all-around model per size and duct type. Score = 50% heating, the mean of its peer percentiles on COP at 5°F, Capacity retention at 5°F, HSPF2, plus 50% cooling, the mean of its peer percentiles on SEER2 and EER2 (share of the other models in its peer group it beats, 0–100). All five ratings are required; there is no minimum heat kept at 5°F. In each duct type a model is sold in, it is scored on its pairing of that type with the best score; equal scores (one decimal) go to the higher cold-climate score, then the higher heating capacity at 5°F.
Size and duct type	Comfort TempsAll-around score, best model	KeplerXAll-around score, best model
Ducted, up to 1.5 tons	No models in this size class	38.9(50 is the typical model of its size class)K18HVH18WD2UN3with ducted air handler K18HVH18WD2HN32 of 2 models have all five ratings · AHRI 217894009
Ducted, 2 tons	No models in this size class	76.9(50 is the typical model of its size class)K20HVH24WD2VN3with ducted air handler K20HVH24WD2HN34 of 4 models have all five ratings · AHRI 218043800
Ducted, 2.5–3 tons	No models in this size class	54.1(50 is the typical model of its size class)K20HVH36WD2VN3with ducted air handler K20HVH36WD2HN36 of 6 models have all five ratings · AHRI 218043801
Ducted, 3.5–4.5 tons	No models in this size class	65.5(50 is the typical model of its size class)K18HVH48WD2R8 of 8 models have all five ratings · AHRI 217894017
Non-ducted, up to 1.5 tons	67.7(50 is the typical model of its size class)CTP-BH122A-Owith ductless indoor unit CTP-BH122A-IAlso listed as CTP-BH122A-O16 of 16 models have all five ratings · AHRI 216472852	No models in this size class
Non-ducted, 2 tons	52.8(50 is the typical model of its size class)CTP-BH242A-Owith ductless indoor unit CTP-BH242A-IAlso listed as CTP-BH242A-O4 of 4 models have all five ratings · AHRI 216472854	No models in this size class

All-around board, every manufacturer

Standout model on each rating

Each manufacturer’s model that beats the largest share of comparable models on the rating; the higher share is in bold.

Top model per rating by peer percentile, with its AHRI-certified value and peer group
Rating	Comfort Temps	KeplerX
COP at 5°F	beats 77% · 2.10CTP-BH121A-OAlso listed as CTP-BH121A-ONon-ducted, up to 1.5 tons	beats 90% · 2.35K20HVH48WD2VN3Ducted, 3.5–4.5 tons
Capacity retention at 5°F	beats 52% · 76%CTP-BH242A-OAlso listed as CTP-BH242A-ONon-ducted, 2 tons	beats 97% · 103%K18HVH24WD2RDucted, 2 tons
HSPF2	beats 64% · 10.0CEL-BH092A-ONon-ducted, up to 1.5 tons	beats 69% · 9.0K18HVH48WD2RDucted, 3.5–4.5 tons
SEER2	beats 79% · 23.0CTP-BH242A-OAlso listed as CTP-BH242A-ONon-ducted, 2 tons	beats 86% · 19.3K20HVH36WD2VN3Ducted, 2.5–3 tons
EER2	beats 70% · 13.0CTP-BH091A-OAlso listed as CTP-BH091A-ONon-ducted, up to 1.5 tons	beats 81% · 12.5K20HVH24WD2VN3Ducted, 2 tons
Heating capacity at 5°F	beats 79% · 13,600 Btu/hCTP-BH182A-OAlso listed as CTP-BH182A-ONon-ducted, up to 1.5 tons	beats 97% · 25,800 Btu/hK18HVH24WD2RDucted, 2 tons

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