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.

CLASSIC and THERMOCORE SYSTEMS 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, THERMOCORE SYSTEMS scores higher on 6 of the 6 ratings.

CLASSIC
THERMOCORE SYSTEMS
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	CLASSIC	THERMOCORE SYSTEMS
Efficiency index	41%median —	61%median —
COP at 5°F	37%median 1.90	61%median 2.00
Capacity retention at 5°F	43%median 74%	55%median 81%
HSPF2	37%median 8.8	68%median 10.1
SEER2	45%median 19.0	65%median 21.4
EER2	40%median 11.2	57%median 12.5
Heating capacity at 5°F	47%median 11,750 Btu/h	61%median 19,700 Btu/h
Outdoor models	40	17
AHRI certifications	68	35

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	CLASSIC	THERMOCORE SYSTEMS
CEE 2025 Tier 1 (Split ASHP)	65%26 models	100%17 models
CEE 2026 Tier 1 (Split ASHP)	65%26 models	94.1%16 models
CEE Advanced Tier (Split ASHP)	2.5%1 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	65%26 models	70.6%12 models
DOE Cold Climate Heat Pump Challenge	2.5%1 models	0%0 models
ENERGY STAR Cold Climate	20%8 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 · 8 groups where both have models

CLASSIC
THERMOCORE SYSTEMS
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	CLASSIC	THERMOCORE SYSTEMS
Ducted, up to 1.5 tons	2 · index 54%	1 · index 77%
Ducted, 2 tons	4 · index 61%	1 · index 65%
Ducted, 2.5–3 tons	2 · index 56%	3 · index 77%
Ducted, 3.5–4.5 tons	4 · index 70%	2 · index 69%
Ducted, 5 tons and up	None	1 · index 65%
Non-ducted, up to 1.5 tons	23 · index 29%	6 · index 64%
Non-ducted, 2 tons	6 · index 35%	2 · index 55%
Non-ducted, 2.5–3 tons	5 · index 41%	6 · index 58%
Non-ducted, 3.5–4.5 tons	2 · index 59%	3 · index 38%

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	CLASSICCold-climate score, best model	THERMOCORE SYSTEMSCold-climate score, best model
Ducted, up to 1.5 tons	44.0(50 is the typical model of its size class)TMRHC18AS22 of 2 models qualify · AHRI 218787831	70.8(50 is the typical model of its size class) (higher)T7HH25D-H224-C1 of 1 models qualify · AHRI 218003246
Ducted, 2 tons	60.4(50 is the typical model of its size class) (higher)OCV18HN024Awith ducted air handler OCA18C002AAlso listed as OCV18HN036A4 of 4 models qualify · AHRI 217747068	48.6(50 is the typical model of its size class)T725D-H236-C1 of 1 models qualify · AHRI 218003240
Ducted, 2.5–3 tons	52.2(50 is the typical model of its size class)GMRSHC36AS42 of 2 models qualify · AHRI 217284819	82.5(50 is the typical model of its size class) (higher)T7HH25Q-H248-C3 of 3 models qualify · AHRI 218003252
Ducted, 3.5–4.5 tons	72.2(50 is the typical model of its size class)OCV18HN048Awith ducted air handler OCA18C006AAlso listed as OCV18HN060A4 of 4 models qualify · AHRI 217747074	81.2(50 is the typical model of its size class) (higher)T7HH22X-H272-C2 of 2 models qualify · AHRI 218003255
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	61.9(50 is the typical model of its size class)TMRHC18AS216 of 23 models qualify · AHRI 218787827	73.8(50 is the typical model of its size class) (higher)T7HH21S-H218-Cwith ductless indoor unit T7HH21S-H218-E3 of 6 models qualify · AHRI 218003230
Non-ducted, 2 tons	67.5(50 is the typical model of its size class)GMRSHC24AS34 of 6 models qualify · AHRI 217284804	88.4(50 is the typical model of its size class) (higher)T7HH21S-H224-Cwith ductless indoor unit T7HH21S-H224-E2 of 2 models qualify · AHRI 218003231
Non-ducted, 2.5–3 tons	77.2(50 is the typical model of its size class)GMRSHC36AS44 of 5 models qualify · AHRI 217284815	78.0(50 is the typical model of its size class) (higher)T7HH25Q-H248-C5 of 6 models qualify · AHRI 218003253
Non-ducted, 3.5–4.5 tons	66.5(50 is the typical model of its size class) (higher)GMRSHC42AS52 of 2 models qualify · AHRI 217284816	66.0(50 is the typical model of its size class)T7HH22X-H272-C2 of 3 models qualify · AHRI 218003256

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	CLASSICAll-around score, best model	THERMOCORE SYSTEMSAll-around score, best model
Ducted, up to 1.5 tons	60.2(50 is the typical model of its size class)TMRHC18AS22 of 2 models have all five ratings · AHRI 218787831	77.4(50 is the typical model of its size class) (higher)T7HH25D-H224-C1 of 1 models have all five ratings · AHRI 218003246
Ducted, 2 tons	68.1(50 is the typical model of its size class) (higher)OCV18HN024Awith ducted air handler OCA18C002AAlso listed as OCV18HN036A4 of 4 models have all five ratings · AHRI 217747068	64.5(50 is the typical model of its size class)T725D-H236-C1 of 1 models have all five ratings · AHRI 218003240
Ducted, 2.5–3 tons	59.0(50 is the typical model of its size class)GMRSHC36AS42 of 2 models have all five ratings · AHRI 217284819	83.6(50 is the typical model of its size class) (higher)T7HH25Q-H248-C3 of 3 models have all five ratings · AHRI 218003252
Ducted, 3.5–4.5 tons	72.6(50 is the typical model of its size class)OCV18HN048Awith ducted air handler OCA18C006AAlso listed as OCV18HN060A4 of 4 models have all five ratings · AHRI 217747074	82.0(50 is the typical model of its size class) (higher)T7HH22X-H272-C2 of 2 models have all five ratings · AHRI 218003255
Ducted, 5 tons and up	No models in this size class	65.3(50 is the typical model of its size class)T7C20S-H260-Cwith ducted air handler T7C20S-H260-EDT1 of 1 models have all five ratings · AHRI 218003237
Non-ducted, up to 1.5 tons	62.1(50 is the typical model of its size class)TMRHC18AS223 of 23 models have all five ratings · AHRI 218787827	81.9(50 is the typical model of its size class) (higher)T7HH25D-H224-C6 of 6 models have all five ratings · AHRI 218003245
Non-ducted, 2 tons	67.6(50 is the typical model of its size class)GMRSHC24AS36 of 6 models have all five ratings · AHRI 217284804	76.4(50 is the typical model of its size class) (higher)T7HH21S-H224-Cwith ductless indoor unit T7HH21S-H224-E2 of 2 models have all five ratings · AHRI 218003231
Non-ducted, 2.5–3 tons	64.5(50 is the typical model of its size class)GMRSHC36AS45 of 5 models have all five ratings · AHRI 217284815	78.3(50 is the typical model of its size class) (higher)T7HH25Q-H248-C6 of 6 models have all five ratings · AHRI 218003251
Non-ducted, 3.5–4.5 tons	67.7(50 is the typical model of its size class) (higher)GMRSHC42AS52 of 2 models have all five ratings · AHRI 217284816	63.6(50 is the typical model of its size class)T7HH22X-H272-C3 of 3 models have all five ratings · AHRI 218003254

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	CLASSIC	THERMOCORE SYSTEMS
COP at 5°F	beats 88% · 2.10GMRSHC36AS4Non-ducted, 2.5–3 tons	beats 94% · 2.34T7HH21S-H224-CNon-ducted, 2 tons
Capacity retention at 5°F	beats 81% · 100%GMRSHC36AS4Non-ducted, 2.5–3 tons	beats 94% · 106%T7HH25Q-H248-CDucted, 2.5–3 tons
HSPF2	beats 86% · 10.0TMRHC42AS5Ducted, 3.5–4.5 tons	beats 98% · 13.5T7HH21S-H224-CNon-ducted, 2 tons
SEER2	beats 97% · 22.0TMRHC18AS2Ducted, up to 1.5 tons	beats 97% · 25.0T725D-H236-CNon-ducted, 2.5–3 tons
EER2	beats 94% · 13.0GMRSHC42AS5Non-ducted, 3.5–4.5 tons	beats 91% · 15.0T7HH25D-H224-CNon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 86% · 36,000 Btu/hGMRSHC36AS4Non-ducted, 2.5–3 tons	beats 97% · 19,000 Btu/hT7HH25D-H224-CNon-ducted, up to 1.5 tons

More comparisons

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CLASSIC vs THERMOCORE SYSTEMS heat pumps