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.

ComfiAire and TRUENORTH 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, ComfiAire scores higher on 5 of the 6 ratings.

ComfiAire
TRUENORTH
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	ComfiAire	TRUENORTH
Efficiency index	59% (higher)median —	41% (higher)median —
COP at 5°F	39% (higher)median 1.85	36% (higher)median 1.80
Capacity retention at 5°F	74% (higher)median 86%	54% (higher)median 71%
HSPF2	45%median 9.0	45%median 8.5
SEER2	49% (higher)median 18.3	41% (higher)median 17.5
EER2	43% (higher)median 10.6	33% (higher)median 10.3
Heating capacity at 5°F	66% (higher)median 23,400 Btu/h	56% (higher)median 17,400 Btu/h
Outdoor models	18	18
AHRI certifications	18	32

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	ComfiAire	TRUENORTH
CEE 2025 Tier 1 (Split ASHP)	61.1%11 models	50%9 models
CEE 2026 Tier 1 (Split ASHP)	61.1%11 models	44.4%8 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	61.1%11 models	38.9%7 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	61.1%11 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 · 6 groups where both have models

ComfiAire
TRUENORTH
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	ComfiAire	TRUENORTH
Ducted, 2 tons	1 · index 46%	2 · index 36%
Ducted, 2.5–3 tons	1 · index 63%	7 · index 41%
Ducted, 3.5–4.5 tons	2 · index 51%	2 · index 35%
Ducted, up to 1.5 tons	None	2 · index 30%
Non-ducted, up to 1.5 tons	7 · index 63%	6 · index 33%
Non-ducted, 2 tons	3 · index 64%	2 · index 48%
Non-ducted, 2.5–3 tons	3 · index 70%	3 · index 68%
Non-ducted, 3.5–4.5 tons	1 · 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	ComfiAireCold-climate score, best model	TRUENORTHCold-climate score, best model
Ducted, up to 1.5 tons	No models in this size class	35.6(50 is the typical model of its size class)WLWHD(18)ND3MO2 of 2 models qualify · AHRI 218593150
Ducted, 2 tons	57.5(50 is the typical model of its size class) (higher)CA-24UHDOwith ducted air handler CA-24UHDI1 of 1 models qualify · AHRI 216765686	50.1(50 is the typical model of its size class)WLWHD(24)ND3MO1 of 2 models qualify · AHRI 218593151
Ducted, 2.5–3 tons	75.1(50 is the typical model of its size class) (higher)CA-36UHDOwith ducted air handler CA-36UHDI1 of 1 models qualify · AHRI 216765687	54.7(50 is the typical model of its size class)WLWHD(30)ND3MO5 of 7 models qualify · AHRI 218593152
Ducted, 3.5–4.5 tons	56.6(50 is the typical model of its size class) (higher)CA-48UHDOwith ducted air handler CA-48UHDI1 of 2 models qualify · AHRI 216765688	51.6(50 is the typical model of its size class)WLUD60W/A-D(U)with ducted air handler WLCAT60H/NAA1 of 2 models qualify · AHRI 218461829
Non-ducted, up to 1.5 tons	72.9(50 is the typical model of its size class)CA-09UXEOwith ductless indoor unit CA-09UWXI4 of 7 models qualify · AHRI 215427967	73.1(50 is the typical model of its size class) (higher)WLWHD(18)ND3MO5 of 6 models qualify · AHRI 218593147
Non-ducted, 2 tons	56.8(50 is the typical model of its size class)CA3-24UMTO2 of 3 models qualify · AHRI 215438063	76.1(50 is the typical model of its size class) (higher)WLWHD(24)ND3MO1 of 2 models qualify · AHRI 218593148
Non-ducted, 2.5–3 tons	64.0(50 is the typical model of its size class)CA4-36UMTO1 of 3 models qualify · AHRI 215438064	73.7(50 is the typical model of its size class) (higher)WLWHD(42)ND3MO3 of 3 models qualify · AHRI 218593146
Non-ducted, 3.5–4.5 tons	41.8(50 is the typical model of its size class)CA5-42UMTO1 of 1 models qualify · AHRI 215438066	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	ComfiAireAll-around score, best model	TRUENORTHAll-around score, best model
Ducted, up to 1.5 tons	No models in this size class	31.2(50 is the typical model of its size class)WLWHD(18)ND3MO2 of 2 models have all five ratings · AHRI 218593150
Ducted, 2 tons	46.3(50 is the typical model of its size class) (higher)CA-24UHDOwith ducted air handler CA-24UHDI1 of 1 models have all five ratings · AHRI 216765686	45.9(50 is the typical model of its size class)WLWHD(24)ND3MO2 of 2 models have all five ratings · AHRI 218593151
Ducted, 2.5–3 tons	63.2(50 is the typical model of its size class) (higher)CA-36UHDOwith ducted air handler CA-36UHDI1 of 1 models have all five ratings · AHRI 216765687	53.1(50 is the typical model of its size class)WLWHD(30)ND3MO6 of 6 models have all five ratings · AHRI 218593152
Ducted, 3.5–4.5 tons	57.3(50 is the typical model of its size class) (higher)CA-48UHDOwith ducted air handler CA-48UHDI2 of 2 models have all five ratings · AHRI 216765688	43.5(50 is the typical model of its size class)WLUD60W/A-D(U)with ducted air handler WLCAT60H/NAA3 of 3 models have all five ratings · AHRI 218461829
Non-ducted, up to 1.5 tons	81.4(50 is the typical model of its size class) (higher)CA-09UXEOwith ductless indoor unit CA-09UWXI4 of 7 models have all five ratings · AHRI 215427967	58.0(50 is the typical model of its size class)WLWHD(18)ND3MO6 of 6 models have all five ratings · AHRI 218593147
Non-ducted, 2 tons	67.5(50 is the typical model of its size class)CA3-24UMTO2 of 3 models have all five ratings · AHRI 215438063	71.5(50 is the typical model of its size class) (higher)WLWHD(24)ND3MO2 of 2 models have all five ratings · AHRI 218593148
Non-ducted, 2.5–3 tons	69.5(50 is the typical model of its size class)CA4-36UMTO1 of 3 models have all five ratings · AHRI 215438064	70.2(50 is the typical model of its size class) (higher)WLWHD(42)ND3MO3 of 3 models have all five ratings · AHRI 218593146
Non-ducted, 3.5–4.5 tons	44.5(50 is the typical model of its size class)CA5-42UMTO1 of 1 models have all five ratings · AHRI 215438066	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	ComfiAire	TRUENORTH
COP at 5°F	beats 75% · 2.05CA-36UHDODucted, 2.5–3 tons	beats 89% · 2.21WLWHD(18)ND3MONon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 99% · 113%CA4-36UMTONon-ducted, 2.5–3 tons	beats 85% · 89%WLWHD(30)ND3MODucted, 2.5–3 tons
HSPF2	beats 83% · 9.5CA-36UHDODucted, 2.5–3 tons	beats 82% · 10.0WLWHD(36)ND3MONon-ducted, 2.5–3 tons
SEER2	beats 89% · 25.5CA-09UXEONon-ducted, up to 1.5 tons	beats 66% · 21.0WLWHD(24)ND3MONon-ducted, 2 tons
EER2	beats 89% · 14.5CA-09UXEONon-ducted, up to 1.5 tons	beats 84% · 12.5WLWHD(30)ND3MONon-ducted, 2.5–3 tons
Heating capacity at 5°F	beats 92% · 18,000 Btu/hCA2-18UMTONon-ducted, up to 1.5 tons	beats 84% · 13,800 Btu/hWLWHD(18)ND3MONon-ducted, up to 1.5 tons

More comparisons

Pick any two manufacturers

ComfiAire vs TRUENORTH heat pumps