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.

Mitsutomo and TRUST AIR CONDITIONERS 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 and TRUST AIR CONDITIONERS split the 6 ratings 2–2.

Mitsutomo
TRUST AIR CONDITIONERS
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Mitsutomo	TRUST AIR CONDITIONERS
Efficiency index	59%median —	59%median —
COP at 5°F	48%median 1.95	52%median 1.98
Capacity retention at 5°F	72% (higher)median 88%	57% (higher)median 70%
HSPF2	72%median 9.5	72%median 9.5
SEER2	60%median 20.0	65%median 19.8
EER2	50%median 11.7	50%median 11.4
Heating capacity at 5°F	68% (higher)median 22,600 Btu/h	57% (higher)median 20,000 Btu/h
Outdoor models	31	42
AHRI certifications	71	103

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Mitsutomo	TRUST AIR CONDITIONERS
CEE 2025 Tier 1 (Split ASHP)	71%22 models	69%29 models
CEE 2026 Tier 1 (Split ASHP)	71%22 models	66.7%28 models
CEE Advanced Tier (Split ASHP)	3.2%1 models	2.4%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	67.7%21 models	52.4%22 models
DOE Cold Climate Heat Pump Challenge	3.2%1 models	2.4%1 models
ENERGY STAR Cold Climate	77.4%24 models	57.1%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

Mitsutomo
TRUST AIR CONDITIONERS
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	Mitsutomo	TRUST AIR CONDITIONERS
Ducted, up to 1.5 tons	5 · index 65%	10 · index 62%
Ducted, 2 tons	2 · index 73%	4 · index 65%
Ducted, 2.5–3 tons	8 · index 66%	10 · index 57%
Ducted, 3.5–4.5 tons	6 · index 60%	8 · index 57%
Ducted, 5 tons and up	None	1 · index 42%
Non-ducted, up to 1.5 tons	10 · index 56%	14 · index 59%
Non-ducted, 2 tons	2 · index 47%	3 · index 61%
Non-ducted, 2.5–3 tons	9 · index 58%	8 · index 60%
Non-ducted, 3.5–4.5 tons	4 · index 51%	5 · index 54%

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	MitsutomoCold-climate score, best model	TRUST AIR CONDITIONERSCold-climate score, best model
Ducted, up to 1.5 tons	74.9(50 is the typical model of its size class)HO-SZ09-AB-Qwith ducted air handler HD-UZ09-AB-Q5 of 5 models qualify · AHRI 214056566	74.9(50 is the typical model of its size class)OAH09H/O4S4Pwith ducted air handler IUMDL09H/I43P8 of 10 models qualify · AHRI 208816930
Ducted, 2 tons	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	80.3(50 is the typical model of its size class) (higher)OUS24H/O4S4Pwith ducted air handler IUMDL24H/I43P4 of 4 models qualify · AHRI 208816929
Ducted, 2.5–3 tons	80.4(50 is the typical model of its size class) (higher)HO-MT28-AC-Q7 of 8 models qualify · AHRI 213785766	79.9(50 is the typical model of its size class)OAH36H/O4S41Pwith ducted air handler IUMDL36H/I43P5 of 10 models qualify · AHRI 208280125
Ducted, 3.5–4.5 tons	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	86.4(50 is the typical model of its size class)OAH48H/O4S41Pwith ducted air handler IUMDL48H/I43P5 of 8 models qualify · AHRI 208280127
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	82.4(50 is the typical model of its size class)HO-SZ06-AB-Qwith ductless indoor unit HJ-UZ06-AB-Q7 of 10 models qualify · AHRI 211306397	89.3(50 is the typical model of its size class) (higher)OUS09H/O4S4Pwith ductless indoor unit IUMW106H/I41P8 of 14 models qualify · AHRI 208816913
Non-ducted, 2 tons	86.1(50 is the typical model of its size class)HO-SZ24-AB-Qwith ductless indoor unit HC-UZ24-AB-Q1 of 2 models qualify · AHRI 214056565	86.1(50 is the typical model of its size class)OAH24H/O4S4Pwith ductless indoor unit IUMC424H/I41P2 of 3 models qualify · AHRI 208816925
Non-ducted, 2.5–3 tons	87.0(50 is the typical model of its size class) (higher)HO-MQ36-AC-Q6 of 9 models qualify · AHRI 213785768	79.3(50 is the typical model of its size class)M4H36H/O4S4P3 of 8 models qualify · AHRI 208284491
Non-ducted, 3.5–4.5 tons	80.5(50 is the typical model of its size class) (higher)HO-MP48-AB-Q4 of 4 models qualify · AHRI 211306410	76.2(50 is the typical model of its size class)M5H48H/O4S4P4 of 5 models qualify · AHRI 208284494

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	MitsutomoAll-around score, best model	TRUST AIR CONDITIONERSAll-around score, best model
Ducted, up to 1.5 tons	85.2(50 is the typical model of its size class)HO-SZ09-AB-Qwith ducted air handler HD-UZ09-AB-Q5 of 5 models have all five ratings · AHRI 214056566	85.2(50 is the typical model of its size class)OAH09H/O4S4Pwith ducted air handler IUMDL09H/I43P10 of 10 models have all five ratings · AHRI 208816930
Ducted, 2 tons	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	83.8(50 is the typical model of its size class) (higher)OUS24H/O4S4Pwith ducted air handler IUMDL24H/I43P4 of 4 models have all five ratings · AHRI 208816929
Ducted, 2.5–3 tons	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	75.4(50 is the typical model of its size class)M3S27H/O4S4P10 of 10 models have all five ratings · AHRI 208284477
Ducted, 3.5–4.5 tons	82.0(50 is the typical model of its size class)HO-MP48-AB-Q6 of 6 models have all five ratings · AHRI 211306411	82.0(50 is the typical model of its size class)M5H48H/O4S4P8 of 8 models have all five ratings · AHRI 208284495
Ducted, 5 tons and up	No models in this size class	41.7(50 is the typical model of its size class)AH60H/O44Pwith ducted air handler AH60H/I44P1 of 1 models have all five ratings · AHRI 208284013
Non-ducted, up to 1.5 tons	84.4(50 is the typical model of its size class)HO-SZ09-AB-Qwith ductless indoor unit HW-SZ09-AB-Q10 of 10 models have all five ratings · AHRI 211306393	92.0(50 is the typical model of its size class) (higher)OUS09H/O4S4Pwith ductless indoor unit IUMW106H/I41P14 of 14 models have all five ratings · AHRI 208816913
Non-ducted, 2 tons	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	84.3(50 is the typical model of its size class) (higher)OAH24H/O4S4Pwith ductless indoor unit IUMW124H/I41P3 of 3 models have all five ratings · AHRI 208816917
Non-ducted, 2.5–3 tons	76.8(50 is the typical model of its size class)HO-MQ36-AC-Q9 of 9 models have all five ratings · AHRI 213785768	82.8(50 is the typical model of its size class) (higher)M4H36H/O4S4P8 of 8 models have all five ratings · AHRI 208284491
Non-ducted, 3.5–4.5 tons	73.8(50 is the typical model of its size class)HO-MP48-AB-Q4 of 4 models have all five ratings · AHRI 211306410	77.9(50 is the typical model of its size class) (higher)M5H48H/O4S4P5 of 5 models have all five ratings · AHRI 208284494

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	Mitsutomo	TRUST AIR CONDITIONERS
COP at 5°F	beats 87% · 2.01RO-SZ36-AB-QAlso listed as RO-SZ36-AC-QNon-ducted, 2.5–3 tons	beats 97% · 2.39OUS12H/O4S4PNon-ducted, up to 1.5 tons
Capacity retention at 5°F	beats 96% · 101%HO-MT28-AC-QDucted, 2.5–3 tons	beats 95% · 103%OAH36H/O4S41PNon-ducted, 2.5–3 tons
HSPF2	beats 99% · 10.3HO-SZ48-BB-QDucted, 3.5–4.5 tons	beats 99% · 10.3OAH48H/O4S41PDucted, 3.5–4.5 tons
SEER2	beats 99% · 20.9HO-MP48-AB-QDucted, 3.5–4.5 tons	beats 99% · 24.6M3S27H/O4S4PNon-ducted, 2.5–3 tons
EER2	beats 95% · 15.8HO-SZ09-AB-QNon-ducted, up to 1.5 tons	beats 98% · 16.2OAH09H/O4S4PNon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 99% · 56,500 Btu/hHW-SZ60-BB-QNon-ducted, 3.5–4.5 tons	beats 98% · 41,000 Btu/hOAH36H/O4S41PNon-ducted, 2.5–3 tons

More comparisons

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Mitsutomo vs TRUST AIR CONDITIONERS heat pumps