COMFORMATIC vs SUPREME heat pumps

Measured against models of the same size and duct type, SUPREME scores higher on 4 of the 6 ratings. COMFORMATIC has 4 outdoor models, SUPREME has 4 outdoor models. COMFORMATIC and SUPREME 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.

COMFORMATIC and SUPREME 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, SUPREME scores higher on 4 of the 6 ratings.

COMFORMATIC
SUPREME
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	COMFORMATIC	SUPREME
Efficiency index	44%median —	69%median —
COP at 5°F	37%median 1.90	52%median 1.91
Capacity retention at 5°F	64% (higher)median 74%	55% (higher)median 83%
HSPF2	42%median 9.3	85%median 10.8
SEER2	44%median 20.5	79%median 24.1
EER2	39%median 11.7	67%median 13.1
Heating capacity at 5°F	64% (higher)median 11,200 Btu/h	63% (higher)median 11,650 Btu/h
Outdoor models	4	4
AHRI certifications	8	8

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	COMFORMATIC	SUPREME
CEE 2025 Tier 1 (Split ASHP)	50%2 models	100%4 models
CEE 2026 Tier 1 (Split ASHP)	50%2 models	100%4 models
CEE Advanced Tier (Split ASHP)	0%0 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	50%2 models	50%2 models
DOE Cold Climate Heat Pump Challenge	0%0 models	0%0 models
ENERGY STAR Cold Climate	50%2 models	50%2 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 · 1 groups where both have models

COMFORMATIC
SUPREME
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	COMFORMATIC	SUPREME
Ducted, up to 1.5 tons	1 · index 32%	None
Ducted, 2 tons	1 · index 46%	None
Non-ducted, up to 1.5 tons	3 · index 39%	4 · index 69%
Non-ducted, 2 tons	1 · index 72%	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	COMFORMATICCold-climate score, best model	SUPREMECold-climate score, best model
Ducted, up to 1.5 tons	36.0(50 is the typical model of its size class)GFMCX18-H21 of 1 models qualify · AHRI 212925600	No models in this size class
Ducted, 2 tons	50.1(50 is the typical model of its size class)GFMCX24-H21 of 1 models qualify · AHRI 212925603	No models in this size class
Non-ducted, up to 1.5 tons	73.4(50 is the typical model of its size class) (higher)GFMCX18-H23 of 3 models qualify · AHRI 212925599	67.2(50 is the typical model of its size class)NE-T52-SUPAE18Ewith ductless indoor unit NE-T52-SUPAE18I2 of 4 models qualify · AHRI 212579411
Non-ducted, 2 tons	76.1(50 is the typical model of its size class)GFMCX24-H21 of 1 models qualify · AHRI 212925602	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	COMFORMATICAll-around score, best model	SUPREMEAll-around score, best model
Ducted, up to 1.5 tons	31.5(50 is the typical model of its size class)GFMCX18-H21 of 1 models have all five ratings · AHRI 212925600	No models in this size class
Ducted, 2 tons	45.9(50 is the typical model of its size class)GFMCX24-H21 of 1 models have all five ratings · AHRI 212925603	No models in this size class
Non-ducted, up to 1.5 tons	58.1(50 is the typical model of its size class)GFMCX18-H23 of 3 models have all five ratings · AHRI 212925599	77.9(50 is the typical model of its size class) (higher)YS25E-12HRDN1with ductless indoor unit YS25E-12HRDN14 of 4 models have all five ratings · AHRI 207742403
Non-ducted, 2 tons	71.5(50 is the typical model of its size class)GFMCX24-H21 of 1 models have all five ratings · AHRI 212925602	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	COMFORMATIC	SUPREME
COP at 5°F	beats 90% · 2.22GFMCX18-H2Non-ducted, up to 1.5 tons	beats 97% · 2.39YS25E-12HRDN1Non-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 75% · 96%GFMCX24-H2Ducted, 2 tons	beats 83% · 100%NE-T52-SUPAE12ENon-ducted, up to 1.5 tons
HSPF2	beats 73% · 10.0GFMCX24-H2Non-ducted, 2 tons	beats 91% · 11.3NE-T52-SUPAE18ENon-ducted, up to 1.5 tons
SEER2	beats 66% · 21.0GFMCX24-H2Non-ducted, 2 tons	beats 89% · 25.5NE-T52-SUPAE12ENon-ducted, up to 1.5 tons
EER2	beats 62% · 12.5GFMCX24-H2Non-ducted, 2 tons	beats 85% · 14.0NE-T52-SUPAE12ENon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 84% · 13,800 Btu/hGFMCX18-H2Non-ducted, up to 1.5 tons	beats 92% · 18,000 Btu/hNE-T52-SUPAE18ENon-ducted, up to 1.5 tons

More comparisons

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