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 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, Mitsutomo scores higher on 3 of the 6 ratings.

Mitsutomo
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	Mitsutomo	THERMOCORE SYSTEMS
Efficiency index	58%median —	61%median —
COP at 5°F	61%median 2.00	61%median 2.00
Capacity retention at 5°F	58% (higher)median 78%	55% (higher)median 81%
HSPF2	69% (higher)median 9.7	68% (higher)median 10.1
SEER2	57%median 18.9	65%median 21.4
EER2	51%median 11.7	57%median 12.5
Heating capacity at 5°F	62% (higher)median 21,100 Btu/h	61% (higher)median 19,700 Btu/h
Outdoor models	56	17
AHRI certifications	165	35

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Mitsutomo	THERMOCORE SYSTEMS
CEE 2025 Tier 1 (Split ASHP)	82.1%46 models	100%17 models
CEE 2026 Tier 1 (Split ASHP)	78.6%44 models	94.1%16 models
CEE Advanced Tier (Split ASHP)	3.6%2 models	0%0 models
Xcel Energy Colorado cold-climate ASHP (2025)	75%42 models	70.6%12 models
DOE Cold Climate Heat Pump Challenge	3.6%2 models	0%0 models
ENERGY STAR Cold Climate	76.8%43 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 · 9 groups where both have models

Mitsutomo
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	Mitsutomo	THERMOCORE SYSTEMS
Ducted, up to 1.5 tons	11 · index 76%	1 · index 77%
Ducted, 2 tons	5 · index 69%	1 · index 65%
Ducted, 2.5–3 tons	14 · index 62%	3 · index 77%
Ducted, 3.5–4.5 tons	12 · index 66%	2 · index 69%
Ducted, 5 tons and up	2 · index 64%	1 · index 65%
Non-ducted, up to 1.5 tons	19 · index 51%	6 · index 64%
Non-ducted, 2 tons	5 · index 48%	2 · index 55%
Non-ducted, 2.5–3 tons	8 · index 49%	6 · index 58%
Non-ducted, 3.5–4.5 tons	7 · index 42%	3 · index 38%
Non-ducted, 5 tons and up	1 · index 27%	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	MitsutomoCold-climate score, best model	THERMOCORE SYSTEMSCold-climate score, best model
Ducted, up to 1.5 tons	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	70.8(50 is the typical model of its size class)T7HH25D-H224-C1 of 1 models qualify · AHRI 218003246
Ducted, 2 tons	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	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	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	82.5(50 is the typical model of its size class)T7HH25Q-H248-C3 of 3 models qualify · AHRI 218003252
Ducted, 3.5–4.5 tons	82.7(50 is the typical model of its size class) (higher)HO-MS48-LA-Q12 of 12 models qualify · AHRI 217162519	81.2(50 is the typical model of its size class)T7HH22X-H272-C2 of 2 models qualify · AHRI 218003255
Ducted, 5 tons and up	None on this board (0 of 2 models qualify)	None on this board (0 of 1 models qualify)
Non-ducted, up to 1.5 tons	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	73.8(50 is the typical model of its size class)T7HH21S-H218-Cwith ductless indoor unit T7HH21S-H218-E3 of 6 models qualify · AHRI 218003230
Non-ducted, 2 tons	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	88.4(50 is the typical model of its size class)T7HH21S-H224-Cwith ductless indoor unit T7HH21S-H224-E2 of 2 models qualify · AHRI 218003231
Non-ducted, 2.5–3 tons	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	78.0(50 is the typical model of its size class)T7HH25Q-H248-C5 of 6 models qualify · AHRI 218003253
Non-ducted, 3.5–4.5 tons	69.9(50 is the typical model of its size class) (higher)HO-MS60-LA-Q6 of 7 models qualify · AHRI 217162523	66.0(50 is the typical model of its size class)T7HH22X-H272-C2 of 3 models qualify · AHRI 218003256
Non-ducted, 5 tons and up	None on this board (0 of 1 models qualify)	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	MitsutomoAll-around score, best model	THERMOCORE SYSTEMSAll-around score, best model
Ducted, up to 1.5 tons	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	77.4(50 is the typical model of its size class)T7HH25D-H224-C1 of 1 models have all five ratings · AHRI 218003246
Ducted, 2 tons	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	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	83.6(50 is the typical model of its size class)HO-MP36-LA-Q14 of 14 models have all five ratings · AHRI 217162516	83.6(50 is the typical model of its size class)T7HH25Q-H248-C3 of 3 models have all five ratings · AHRI 218003252
Ducted, 3.5–4.5 tons	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	82.0(50 is the typical model of its size class)T7HH22X-H272-C2 of 2 models have all five ratings · AHRI 218003255
Ducted, 5 tons and up	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	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	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	81.9(50 is the typical model of its size class)T7HH25D-H224-C6 of 6 models have all five ratings · AHRI 218003245
Non-ducted, 2 tons	74.3(50 is the typical model of its size class)RU-SZ24-LA-Qwith ductless indoor unit HW-UZ24-LA-Q5 of 5 models have all five ratings · AHRI 217162547	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	66.3(50 is the typical model of its size class)HO-MP36-LA-Q8 of 8 models have all five ratings · AHRI 217162515	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	62.6(50 is the typical model of its size class)HO-MS60-LA-Q7 of 7 models have all five ratings · AHRI 217162521	63.6(50 is the typical model of its size class) (higher)T7HH22X-H272-C3 of 3 models have all five ratings · AHRI 218003254
Non-ducted, 5 tons and up	32.5(50 is the typical model of its size class)RO-MS60-LA-Q1 of 1 models have all five ratings · AHRI 217162506	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	Mitsutomo	THERMOCORE SYSTEMS
COP at 5°F	beats 99% · 2.51RU-SZ12-LA-QNon-ducted, up to 1.5 tons	beats 94% · 2.34T7HH21S-H224-CNon-ducted, 2 tons
Capacity retention at 5°F	beats 98% · 126%HO-SZ09-LA-QNon-ducted, up to 1.5 tons	beats 94% · 106%T7HH25Q-H248-CDucted, 2.5–3 tons
HSPF2	beats 99% · 11.0HO-MS48-LA-QDucted, 3.5–4.5 tons	beats 98% · 13.5T7HH21S-H224-CNon-ducted, 2 tons
SEER2	beats 96% · 20.4RO-MS48-LA-QDucted, 3.5–4.5 tons	beats 97% · 25.0T725D-H236-CNon-ducted, 2.5–3 tons
EER2	beats 99% · 14.4HO-SZ06-LA-QDucted, up to 1.5 tons	beats 91% · 15.0T7HH25D-H224-CNon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 98% · 39,500 Btu/hHO-SG36-LA-QNon-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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Mitsutomo vs THERMOCORE SYSTEMS heat pumps