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 Mitsutomo 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, Mitsutomo scores higher on 6 of the 6 ratings.

CLASSIC
Mitsutomo
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	CLASSIC	Mitsutomo
Efficiency index	41%median —	58%median —
COP at 5°F	37%median 1.90	61%median 2.00
Capacity retention at 5°F	43%median 74%	58%median 78%
HSPF2	37%median 8.8	69%median 9.7
SEER2	45%median 19.0	57%median 18.9
EER2	40%median 11.2	51%median 11.7
Heating capacity at 5°F	47%median 11,750 Btu/h	62%median 21,100 Btu/h
Outdoor models	40	56
AHRI certifications	68	165

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	CLASSIC	Mitsutomo
CEE 2025 Tier 1 (Split ASHP)	65%26 models	82.1%46 models
CEE 2026 Tier 1 (Split ASHP)	65%26 models	78.6%44 models
CEE Advanced Tier (Split ASHP)	2.5%1 models	3.6%2 models
Xcel Energy Colorado cold-climate ASHP (2025)	65%26 models	75%42 models
DOE Cold Climate Heat Pump Challenge	2.5%1 models	3.6%2 models
ENERGY STAR Cold Climate	20%8 models	76.8%43 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
Mitsutomo
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	Mitsutomo
Ducted, up to 1.5 tons	2 · index 54%	11 · index 76%
Ducted, 2 tons	4 · index 61%	5 · index 69%
Ducted, 2.5–3 tons	2 · index 56%	14 · index 62%
Ducted, 3.5–4.5 tons	4 · index 70%	12 · index 66%
Ducted, 5 tons and up	None	2 · index 64%
Non-ducted, up to 1.5 tons	23 · index 29%	19 · index 51%
Non-ducted, 2 tons	6 · index 35%	5 · index 48%
Non-ducted, 2.5–3 tons	5 · index 41%	8 · index 49%
Non-ducted, 3.5–4.5 tons	2 · index 59%	7 · index 42%
Non-ducted, 5 tons and up	None	1 · index 27%

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	MitsutomoCold-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	93.5(50 is the typical model of its size class) (higher)HO-SZ06-LA-Qwith ducted air handler HD-UZ06-LA-Q10 of 11 models qualify · AHRI 217162571
Ducted, 2 tons	60.4(50 is the typical model of its size class)OCV18HN024Awith ducted air handler OCA18C002AAlso listed as OCV18HN036A4 of 4 models qualify · AHRI 217747068	85.7(50 is the typical model of its size class) (higher)HO-SZ24-LA-Qwith ducted air handler HD-UZ24LA-Q5 of 5 models qualify · AHRI 217162578
Ducted, 2.5–3 tons	52.2(50 is the typical model of its size class)GMRSHC36AS42 of 2 models qualify · AHRI 217284819	83.2(50 is the typical model of its size class) (higher)HO-SG36-LA-Qwith ducted air handler HD-UG36LA-Q10 of 14 models qualify · AHRI 217162598
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	82.7(50 is the typical model of its size class) (higher)HO-MS48-LA-Q12 of 12 models qualify · AHRI 217162519
Ducted, 5 tons and up	No models in this size class	None on this board (0 of 2 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	94.4(50 is the typical model of its size class) (higher)HO-SZ06-LA-Qwith ductless indoor unit HJ-UZ06-LA-Q12 of 19 models qualify · AHRI 217162582
Non-ducted, 2 tons	67.5(50 is the typical model of its size class)GMRSHC24AS34 of 6 models qualify · AHRI 217284804	89.4(50 is the typical model of its size class) (higher)HO-SZ24-LA-Qwith ductless indoor unit HC-UZ24-LA-Q5 of 5 models qualify · AHRI 217162570
Non-ducted, 2.5–3 tons	77.2(50 is the typical model of its size class)GMRSHC36AS44 of 5 models qualify · AHRI 217284815	89.4(50 is the typical model of its size class) (higher)HO-SG36-LA-Qwith ductless indoor unit HF-UG36-LA-Q6 of 8 models qualify · AHRI 217162601
Non-ducted, 3.5–4.5 tons	66.5(50 is the typical model of its size class)GMRSHC42AS52 of 2 models qualify · AHRI 217284816	69.9(50 is the typical model of its size class) (higher)HO-MS60-LA-Q6 of 7 models qualify · AHRI 217162523
Non-ducted, 5 tons and up	No models in this size class	None on this board (0 of 1 models qualify)

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	MitsutomoAll-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	95.0(50 is the typical model of its size class) (higher)HO-SZ06-LA-Qwith ducted air handler HD-UZ06-LA-Q11 of 11 models have all five ratings · AHRI 217162571
Ducted, 2 tons	68.1(50 is the typical model of its size class)OCV18HN024Awith ducted air handler OCA18C002AAlso listed as OCV18HN036A4 of 4 models have all five ratings · AHRI 217747068	78.8(50 is the typical model of its size class) (higher)RU-SZ24-LA-Qwith ducted air handler HD-UZ24LA-Q5 of 5 models have all five ratings · AHRI 217162558
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)HO-MP36-LA-Q14 of 14 models have all five ratings · AHRI 217162516
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	85.1(50 is the typical model of its size class) (higher)RO-MS48-LA-Q12 of 12 models have all five ratings · AHRI 217162504
Ducted, 5 tons and up	No models in this size class	65.3(50 is the typical model of its size class)RU-SG60-LA-Qwith ducted air handler HD-UG60AL-Q2 of 2 models have all five ratings · AHRI 217162592
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	93.8(50 is the typical model of its size class) (higher)HO-SZ06-LA-Qwith ductless indoor unit HW-UZ06-LA-Q19 of 19 models have all five ratings · AHRI 217162538
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	74.3(50 is the typical model of its size class) (higher)RU-SZ24-LA-Qwith ductless indoor unit HW-UZ24-LA-Q5 of 5 models have all five ratings · AHRI 217162547
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	66.3(50 is the typical model of its size class) (higher)HO-MP36-LA-Q8 of 8 models have all five ratings · AHRI 217162515
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	62.6(50 is the typical model of its size class)HO-MS60-LA-Q7 of 7 models have all five ratings · AHRI 217162521
Non-ducted, 5 tons and up	No models in this size class	32.5(50 is the typical model of its size class)RO-MS60-LA-Q1 of 1 models have all five ratings · AHRI 217162506

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	Mitsutomo
COP at 5°F	beats 88% · 2.10GMRSHC36AS4Non-ducted, 2.5–3 tons	beats 99% · 2.51RU-SZ12-LA-QNon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 81% · 100%GMRSHC36AS4Non-ducted, 2.5–3 tons	beats 98% · 126%HO-SZ09-LA-QNon-ducted, up to 1.5 tons
HSPF2	beats 86% · 10.0TMRHC42AS5Ducted, 3.5–4.5 tons	beats 99% · 11.0HO-MS48-LA-QDucted, 3.5–4.5 tons
SEER2	beats 97% · 22.0TMRHC18AS2Ducted, up to 1.5 tons	beats 96% · 20.4RO-MS48-LA-QDucted, 3.5–4.5 tons
EER2	beats 94% · 13.0GMRSHC42AS5Non-ducted, 3.5–4.5 tons	beats 99% · 14.4HO-SZ06-LA-QDucted, up to 1.5 tons
Heating capacity at 5°F	beats 86% · 36,000 Btu/hGMRSHC36AS4Non-ducted, 2.5–3 tons	beats 98% · 39,500 Btu/hHO-SG36-LA-QNon-ducted, 2.5–3 tons

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CLASSIC vs Mitsutomo heat pumps