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 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	CLASSIC	Mitsutomo
Efficiency index	52%median —	59%median —
COP at 5°F	41%median 1.80	48%median 1.95
Capacity retention at 5°F	42%median 70%	72%median 88%
HSPF2	51%median 9.0	72%median 9.5
SEER2	52%median 20.0	60%median 20.0
EER2	49%median 11.5	50%median 11.7
Heating capacity at 5°F	45%median 13,000 Btu/h	68%median 22,600 Btu/h
Outdoor models	32	31
AHRI certifications	48	71

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)	56.3%18 models	71%22 models
CEE 2026 Tier 1 (Split ASHP)	56.3%18 models	71%22 models
CEE Advanced Tier (Split ASHP)	0%0 models	3.2%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	40.6%13 models	67.7%21 models
DOE Cold Climate Heat Pump Challenge	0%0 models	3.2%1 models
ENERGY STAR Cold Climate	12.5%4 models	77.4%24 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 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	CLASSIC	Mitsutomo
Ducted, up to 1.5 tons	3 · index 66%	5 · index 65%
Ducted, 2 tons	1 · index 85%	2 · index 73%
Ducted, 2.5–3 tons	3 · index 57%	8 · index 66%
Ducted, 3.5–4.5 tons	2 · index 54%	6 · index 60%
Non-ducted, up to 1.5 tons	14 · index 46%	10 · index 56%
Non-ducted, 2 tons	3 · index 57%	2 · index 47%
Non-ducted, 2.5–3 tons	12 · index 49%	9 · index 58%
Non-ducted, 3.5–4.5 tons	3 · index 46%	4 · index 51%

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	67.8(50 is the typical model of its size class)MRSVHC12ASwith ducted air handler MFCHC12S2 of 3 models qualify · AHRI 209843001	74.9(50 is the typical model of its size class) (higher)HO-SZ09-AB-Qwith ducted air handler HD-UZ09-AB-Q5 of 5 models qualify · AHRI 214056566
Ducted, 2 tons	82.4(50 is the typical model of its size class) (higher)MRSVHC24ASwith ducted air handler MFCHC24S1 of 1 models qualify · AHRI 209843003	79.4(50 is the typical model of its size class)HO-SZ24-AB-Qwith ducted air handler HD-UZ24-AB-Q2 of 2 models qualify · AHRI 214056569
Ducted, 2.5–3 tons	None on this board (0 of 3 models qualify)	80.4(50 is the typical model of its size class)HO-MT28-AC-Q7 of 8 models qualify · AHRI 213785766
Ducted, 3.5–4.5 tons	None on this board (0 of 2 models qualify)	86.4(50 is the typical model of its size class)HO-SZ48-BB-Qwith ducted air handler HD-UZ48-BB-Q6 of 6 models qualify · AHRI 214056577
Non-ducted, up to 1.5 tons	57.1(50 is the typical model of its size class)MMRSHC18AS29 of 14 models qualify · AHRI 209843033	82.4(50 is the typical model of its size class) (higher)HO-SZ06-AB-Qwith ductless indoor unit HJ-UZ06-AB-Q7 of 10 models qualify · AHRI 211306397
Non-ducted, 2 tons	74.2(50 is the typical model of its size class)MRSVHC24ASwith ductless indoor unit MUVHC24S2 of 3 models qualify · AHRI 209843008	86.1(50 is the typical model of its size class) (higher)HO-SZ24-AB-Qwith ductless indoor unit HC-UZ24-AB-Q1 of 2 models qualify · AHRI 214056565
Non-ducted, 2.5–3 tons	49.3(50 is the typical model of its size class)MMRSHC27AS32 of 12 models qualify · AHRI 209843036	87.0(50 is the typical model of its size class) (higher)HO-MQ36-AC-Q6 of 9 models qualify · AHRI 213785768
Non-ducted, 3.5–4.5 tons	56.3(50 is the typical model of its size class)MRSVHC48ASwith ductless indoor unit MUVHC48S2 of 3 models qualify · AHRI 209843010	80.5(50 is the typical model of its size class) (higher)HO-MP48-AB-Q4 of 4 models qualify · AHRI 211306410

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	78.5(50 is the typical model of its size class)MRSVHC18ASwith ducted air handler MFCHC18S3 of 3 models have all five ratings · AHRI 209843002	85.2(50 is the typical model of its size class) (higher)HO-SZ09-AB-Qwith ducted air handler HD-UZ09-AB-Q5 of 5 models have all five ratings · AHRI 214056566
Ducted, 2 tons	84.9(50 is the typical model of its size class) (higher)MRSVHC24ASwith ducted air handler MFCHC24S1 of 1 models have all five ratings · AHRI 209843003	80.1(50 is the typical model of its size class)HO-SZ24-AB-Qwith ducted air handler HD-UZ24-AB-Q2 of 2 models have all five ratings · AHRI 214056569
Ducted, 2.5–3 tons	75.4(50 is the typical model of its size class)MMRSHC27AS33 of 3 models have all five ratings · AHRI 209843037	83.7(50 is the typical model of its size class) (higher)HO-MQ36-AC-Q8 of 8 models have all five ratings · AHRI 213785769
Ducted, 3.5–4.5 tons	63.5(50 is the typical model of its size class)MMRSHC48AS52 of 2 models have all five ratings · AHRI 209843043	82.0(50 is the typical model of its size class) (higher)HO-MP48-AB-Q6 of 6 models have all five ratings · AHRI 211306411
Non-ducted, up to 1.5 tons	71.5(50 is the typical model of its size class)MRSVHC12ASwith ductless indoor unit MC4VHC12S14 of 14 models have all five ratings · AHRI 209842996	84.4(50 is the typical model of its size class) (higher)HO-SZ09-AB-Qwith ductless indoor unit HW-SZ09-AB-Q10 of 10 models have all five ratings · AHRI 211306393
Non-ducted, 2 tons	72.0(50 is the typical model of its size class) (higher)MRSVHC24ASwith ductless indoor unit MUVHC24S2 of 3 models have all five ratings · AHRI 209843008	70.7(50 is the typical model of its size class)HO-SZ24-AB-Qwith ductless indoor unit HW-SZ24-AB-Q2 of 2 models have all five ratings · AHRI 211306396
Non-ducted, 2.5–3 tons	66.7(50 is the typical model of its size class)MMRSHC27AS36 of 12 models have all five ratings · AHRI 209843036	76.8(50 is the typical model of its size class) (higher)HO-MQ36-AC-Q9 of 9 models have all five ratings · AHRI 213785768
Non-ducted, 3.5–4.5 tons	51.7(50 is the typical model of its size class)MMRSHC48AS52 of 3 models have all five ratings · AHRI 209843042	73.8(50 is the typical model of its size class) (higher)HO-MP48-AB-Q4 of 4 models have all five ratings · AHRI 211306410

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 91% · 2.27MRSVHC12ASNon-ducted, up to 1.5 tons	beats 87% · 2.01RO-SZ36-AB-QAlso listed as RO-SZ36-AC-QNon-ducted, 2.5–3 tons
Capacity retention at 5°F	beats 59% · 68%MRSVHC48ASDucted, 3.5–4.5 tons	beats 96% · 101%HO-MT28-AC-QDucted, 2.5–3 tons
HSPF2	beats 98% · 11.2MRSVHC24ASDucted, 2 tons	beats 99% · 10.3HO-SZ48-BB-QDucted, 3.5–4.5 tons
SEER2	beats 98% · 21.0MMRSHC27AS3Ducted, 2.5–3 tons	beats 99% · 20.9HO-MP48-AB-QDucted, 3.5–4.5 tons
EER2	beats 85% · 12.5MRSVHC24ASDucted, 2 tons	beats 95% · 15.8HO-SZ09-AB-QNon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 85% · 14,000 Btu/hMMRSHC18AS2Non-ducted, up to 1.5 tons	beats 99% · 56,500 Btu/hHW-SZ60-BB-QNon-ducted, 3.5–4.5 tons

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CLASSIC vs Mitsutomo heat pumps