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.

AUFIT and CanAir 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, CanAir scores higher on 6 of the 6 ratings.

AUFIT
CanAir
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	AUFIT	CanAir
Efficiency index	53%median —	64%median —
COP at 5°F	64%median 2.00	65%median 2.07
Capacity retention at 5°F	51%median 75%	61%median 82%
HSPF2	52%median 9.0	74%median 10.0
SEER2	61%median 22.0	66%median 21.1
EER2	38%median 11.3	60%median 12.0
Heating capacity at 5°F	54%median 15,000 Btu/h	63%median 20,000 Btu/h
Outdoor models	45	44
AHRI certifications	61	157

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	AUFIT	CanAir
CEE 2025 Tier 1 (Split ASHP)	84.4%38 models	93.2%41 models
CEE 2026 Tier 1 (Split ASHP)	82.2%37 models	93.2%41 models
CEE Advanced Tier (Split ASHP)	0%0 models	2.3%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	77.8%35 models	90.9%40 models
DOE Cold Climate Heat Pump Challenge	0%0 models	2.3%1 models
ENERGY STAR Cold Climate	51.1%23 models	90.9%40 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 · 7 groups where both have models

AUFIT
CanAir
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	AUFIT	CanAir
Ducted, up to 1.5 tons	3 · index 52%	9 · index 76%
Ducted, 2 tons	3 · index 48%	4 · index 71%
Ducted, 2.5–3 tons	7 · index 57%	9 · index 65%
Ducted, 3.5–4.5 tons	4 · index 51%	8 · index 66%
Ducted, 5 tons and up	None	1 · index 65%
Non-ducted, up to 1.5 tons	20 · index 52%	19 · index 67%
Non-ducted, 2 tons	6 · index 67%	3 · index 65%
Non-ducted, 2.5–3 tons	7 · index 41%	9 · index 55%
Non-ducted, 3.5–4.5 tons	None	7 · index 47%

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	AUFITCold-climate score, best model	CanAirCold-climate score, best model
Ducted, up to 1.5 tons	55.6(50 is the typical model of its size class)FM2-H18/2DR3A3 of 3 models qualify · AHRI 217606743	82.3(50 is the typical model of its size class) (higher)4C28SCH18H21with ducted air handler 4C28SEDH18H219 of 9 models qualify · AHRI 217958974
Ducted, 2 tons	59.1(50 is the typical model of its size class)FM3-H24/2DR3A3 of 3 models qualify · AHRI 217606744	85.7(50 is the typical model of its size class) (higher)4C28SCH24H21with ducted air handler 4C28SEDH24H214 of 4 models qualify · AHRI 217958975
Ducted, 2.5–3 tons	73.8(50 is the typical model of its size class)FM4-H30/2DR3A7 of 7 models qualify · AHRI 217606745	83.2(50 is the typical model of its size class) (higher)4C28LCH36H21with ducted air handler 4C28LEDH36H216 of 9 models qualify · AHRI 217958976
Ducted, 3.5–4.5 tons	72.3(50 is the typical model of its size class)XHU36HPV1AOwith ducted air handler XHU36HPV1AIAlso listed as FHU48HPV1AO4 of 4 models qualify · AHRI 217606771	82.7(50 is the typical model of its size class) (higher)4C28MC648H218 of 8 models qualify · AHRI 215449734
Ducted, 5 tons and up	No models in this size class	None on this board (0 of 1 models qualify)
Non-ducted, up to 1.5 tons	79.2(50 is the typical model of its size class)ASW-H18E3B2/R3DI-D2with ductless indoor unit ASW-H18E3B2/R3DI-D2Also listed as ASW-H18E3B2/**R3DI-D217 of 20 models qualify · AHRI 217902887	96.7(50 is the typical model of its size class) (higher)4C28SCH06H21with ductless indoor unit 4C28SEH06H2117 of 19 models qualify · AHRI 215449716
Non-ducted, 2 tons	77.4(50 is the typical model of its size class)ASW-H24F6A2/ R3DI-D7with ductless indoor unit ASW-H24F6A2/ R3DI-D7Also listed as ASW-H24F6A2/**R3DI-D75 of 6 models qualify · AHRI 217902888	89.4(50 is the typical model of its size class) (higher)4C28SCH24H21with ductless indoor unit 4C28SEQ24H213 of 3 models qualify · AHRI 217958956
Non-ducted, 2.5–3 tons	62.1(50 is the typical model of its size class)FM4-H30/2DR3A7 of 7 models qualify · AHRI 217606750	89.4(50 is the typical model of its size class) (higher)4C28LCH36H21with ductless indoor unit 4C28LEP36H217 of 9 models qualify · AHRI 217958937
Non-ducted, 3.5–4.5 tons	No models in this size class	73.4(50 is the typical model of its size class)4C28MC648H216 of 7 models qualify · AHRI 215449735

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	AUFITAll-around score, best model	CanAirAll-around score, best model
Ducted, up to 1.5 tons	61.1(50 is the typical model of its size class)FM2-H18/2DR3A3 of 3 models have all five ratings · AHRI 217606743	86.7(50 is the typical model of its size class) (higher)4C28SCH09H21with ducted air handler 4C28SEDL09H219 of 9 models have all five ratings · AHRI 217958962
Ducted, 2 tons	66.1(50 is the typical model of its size class)FM3-H24/2DR3A3 of 3 models have all five ratings · AHRI 217606744	78.8(50 is the typical model of its size class) (higher)4C25SCH24H21with ducted air handler 4C28SEDH24H214 of 4 models have all five ratings · AHRI 217958968
Ducted, 2.5–3 tons	80.7(50 is the typical model of its size class)FM4-H30/2DR3A7 of 7 models have all five ratings · AHRI 217606745	83.6(50 is the typical model of its size class) (higher)4C28MC536H219 of 9 models have all five ratings · AHRI 215449731
Ducted, 3.5–4.5 tons	53.2(50 is the typical model of its size class)XHU36HPV1AOwith ducted air handler XHU36HPV1AIAlso listed as FHU48HPV1AO4 of 4 models have all five ratings · AHRI 217606771	85.1(50 is the typical model of its size class) (higher)4C25MC548H218 of 8 models have all five ratings · AHRI 217958993
Ducted, 5 tons and up	No models in this size class	65.3(50 is the typical model of its size class)4C25LCH60H21with ducted air handler 4C28LEDH60H211 of 1 models have all five ratings · AHRI 217958971
Non-ducted, up to 1.5 tons	82.9(50 is the typical model of its size class)ASW-H18E3B2/R3DI-D2with ductless indoor unit ASW-H18E3B2/R3DI-D2Also listed as ASW-H18E3B2/**R3DI-D220 of 20 models have all five ratings · AHRI 217902887	96.2(50 is the typical model of its size class) (higher)4C28SCH06H21with ductless indoor unit 4C28SEH06H2118 of 19 models have all five ratings · AHRI 215449716
Non-ducted, 2 tons	86.5(50 is the typical model of its size class)ASW-H24F6A2/ R3DI-D7with ductless indoor unit ASW-H24F6A2/ R3DI-D7Also listed as ASW-H24F6A2/**R3DI-D76 of 6 models have all five ratings · AHRI 217902888	86.8(50 is the typical model of its size class) (higher)4C25SCH24H21with ductless indoor unit 4C28SEH24H213 of 3 models have all five ratings · AHRI 215828390
Non-ducted, 2.5–3 tons	66.6(50 is the typical model of its size class)FM4-H30/2DR3A7 of 7 models have all five ratings · AHRI 217606740	78.3(50 is the typical model of its size class) (higher)4C28MC536H219 of 9 models have all five ratings · AHRI 215449730
Non-ducted, 3.5–4.5 tons	No models in this size class	75.6(50 is the typical model of its size class)4C28MC648H217 of 7 models have all five ratings · AHRI 215449733

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	AUFIT	CanAir
COP at 5°F	beats 89% · 2.25ASW-H18E3B2/R3DI-D2Also listed as ASW-H18E3B2/*R3DI-D2Non-ducted, up to 1.5 tons	beats 99% · 2.514C25SCH12H21Non-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 79% · 90%FM3-H24/2DR3ANon-ducted, 2 tons	beats 98% · 120%4C28SCH09H21Ducted, up to 1.5 tons
HSPF2	beats 84% · 10.0FM4-H36/2DR3ADucted, 2.5–3 tons	beats 99% · 14.84C28SCH06H21Non-ducted, up to 1.5 tons
SEER2	beats 95% · 25.0ASW-H24F6A2/ R3DI-D7Also listed as ASW-H24F6A2/*R3DI-D7Non-ducted, 2 tons	beats 99% · 33.34C35SCH09H21Non-ducted, up to 1.5 tons
EER2	beats 96% · 14.0ASW-H24F6A2/ R3DI-D7Also listed as ASW-H24F6A2/*R3DI-D7Non-ducted, 2 tons	beats 99% · 18.04C28SCH06H21Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 86% · 15,000 Btu/hASW-H18E3B2/R3DI-D2Also listed as ASW-H18E3B2/*R3DI-D2Non-ducted, up to 1.5 tons	beats 99% · 22,600 Btu/h4C35SCH18H21Non-ducted, up to 1.5 tons

More comparisons

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AUFIT vs CanAir heat pumps