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.

ACIQ and Mitsubishi Electric 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, Mitsubishi Electric scores higher on 6 of the 6 ratings.

ACIQ
Mitsubishi Electric
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	ACIQ	Mitsubishi Electric
Efficiency index	47%median —	65%median — · 3rd ranked
COP at 5°F	48%median 1.94	67%median 2.08 · 6th ranked
Capacity retention at 5°F	43%median 59%	55%median 73% · 15th ranked
HSPF2	44%median 8.1	72%median 10.0 · 1st ranked
SEER2	45%median 16.0	63%median 20.2 · 5th ranked
EER2	50%median 11.1	65%median 12.8 · 3rd ranked
Heating capacity at 5°F	44%median 19,100 Btu/h	59%median 18,650 Btu/h · 6th ranked
Outdoor models	161	373
AHRI certifications	6,584	1,233

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	ACIQ	Mitsubishi Electric
CEE 2025 Tier 1 (Split ASHP)	41%66 models	67.8%253 models
CEE 2026 Tier 1 (Split ASHP)	34.2%55 models	66.5%248 models
CEE Advanced Tier (Split ASHP)	1.2%2 models	6.4%24 models
Xcel Energy Colorado cold-climate ASHP (2025)	31.7%51 models	53.6%200 models
DOE Cold Climate Heat Pump Challenge	1.2%2 models	6.4%24 models
ENERGY STAR Cold Climate	19.3%31 models	37.3%139 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

ACIQ
Mitsubishi Electric
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	ACIQ	Mitsubishi Electric
Ducted, up to 1.5 tons	14 · index 50%	56 · index 63%
Ducted, 2 tons	23 · index 45%	33 · index 56%
Ducted, 2.5–3 tons	40 · index 43%	82 · index 66%
Ducted, 3.5–4.5 tons	52 · index 46%	48 · index 59%
Ducted, 5 tons and up	5 · index 48%	8 · index 68%
Non-ducted, up to 1.5 tons	22 · index 52%	146 · index 65%
Non-ducted, 2 tons	6 · index 52%	33 · index 68%
Non-ducted, 2.5–3 tons	14 · index 51%	64 · index 69%
Non-ducted, 3.5–4.5 tons	7 · index 48%	46 · index 74%
Non-ducted, 5 tons and up	None	10 · index 60%

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	ACIQCold-climate score, best model	Mitsubishi ElectricCold-climate score, best model
Ducted, up to 1.5 tons	86.9(50 is the typical model of its size class) (higher)ACIQ-18-HPBwith ducted air handler ACIQ-18W-WM9 of 14 models qualify · AHRI 213433248	77.0(50 is the typical model of its size class)SUZ-KA12NAHZ*with ducted air handler TPEADA0121AA90AAlso listed as NTXSKH12A11212 of 56 models qualify · AHRI 213362139
Ducted, 2 tons	79.4(50 is the typical model of its size class) (higher)ACIQ-24ZPL-HP230Bwith ducted air handler ACIQ-24CD-HH-MB9 of 22 models qualify · AHRI 207825541	70.6(50 is the typical model of its size class)TRUZH0241HA****with ducted air handler TPEADA0241AA90AAlso listed as PUZ-HA24NHA16 of 32 models qualify · AHRI 213362163
Ducted, 2.5–3 tons	79.9(50 is the typical model of its size class)ACIQ-36ZPL-HP230Bwith ducted air handler ACIQ-36CD-HH-MB14 of 41 models qualify · AHRI 210857321	88.1(50 is the typical model of its size class) (higher)NTXSKS30A112**with ducted air handler PEAD-A30AAAlso listed as SUZ-KA30NA244 of 83 models qualify · AHRI 207702771
Ducted, 3.5–4.5 tons	86.4(50 is the typical model of its size class) (higher)ACIQ-48ZPL-HP230Bwith ducted air handler ACIQ-48CD-HH-MB11 of 52 models qualify · AHRI 210857322	79.2(50 is the typical model of its size class)MXZ-SM42NAMHZAlso sold as Trane / Mitsubishi Electric NTXMSH42A152A29 of 48 models qualify · AHRI 207517155
Ducted, 5 tons and up	None on this board (0 of 5 models qualify)	72.8(50 is the typical model of its size class)MXZ-SM60NAM***5 of 8 models qualify · AHRI 213248843
Non-ducted, up to 1.5 tons	89.3(50 is the typical model of its size class)ACIQ-06ZPL-HP230Bwith ductless indoor unit ACIQ-06W-HH-MC16 of 22 models qualify · AHRI 210857314	97.3(50 is the typical model of its size class) (higher)NAXSPH06B112A*with ductless indoor unit NAXWPH06B112AA77 of 146 models qualify · AHRI 206195819
Non-ducted, 2 tons	85.4(50 is the typical model of its size class) (higher)ACIQ-24ZPL-HP230Bwith ductless indoor unit ACIQ-24FM-HH-MB4 of 6 models qualify · AHRI 207825544	74.6(50 is the typical model of its size class)MXZ-3C24NAHZ4-**Also sold as American Standard / Mitsubishi Electric NTXMPH24A132C21 of 33 models qualify · AHRI 212925537
Non-ducted, 2.5–3 tons	79.3(50 is the typical model of its size class)ACIQ-36Z-HH-M4B6 of 14 models qualify · AHRI 207825582	89.8(50 is the typical model of its size class) (higher)PUMY-HP36NKMU1Also sold as Trane / Mitsubishi Electric NTXMSH36A142A; also listed as MXZ-SM36NAMHZ31 of 64 models qualify · AHRI 204834272
Non-ducted, 3.5–4.5 tons	76.8(50 is the typical model of its size class)ACIQ-60ZPL-HP230Bwith ductless indoor unit ACIQ-60FM-HH-MB5 of 7 models qualify · AHRI 210857326	90.4(50 is the typical model of its size class) (higher)PUMY-HP48NKMU1Also sold as Trane / Mitsubishi Electric NTXMSH48A182A; also listed as MXZ-SM48NAMHZ27 of 46 models qualify · AHRI 204834275
Non-ducted, 5 tons and up	No models in this size class	60.2(50 is the typical model of its size class)MXZ-SM60NAM***Also sold as Trane / Mitsubishi Electric NTXMSM60A182A7 of 10 models qualify · AHRI 213248844

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	ACIQAll-around score, best model	Mitsubishi ElectricAll-around score, best model
Ducted, up to 1.5 tons	85.2(50 is the typical model of its size class)ACIQ-09ZPL-HP230Bwith ducted air handler ACIQ-09CD-HH-MB14 of 14 models have all five ratings · AHRI 207825538	88.0(50 is the typical model of its size class) (higher)SUZ-KA12NAHZ*with ducted air handler TPEADA0121AA90AAlso listed as NTXSKH12A11249 of 56 models have all five ratings · AHRI 213362139
Ducted, 2 tons	80.1(50 is the typical model of its size class) (higher)ACIQ-24ZPL-HP230Bwith ducted air handler ACIQ-24CD-HH-MB23 of 23 models have all five ratings · AHRI 207825541	79.7(50 is the typical model of its size class)NTXSKS24A112**with ducted air handler TPEADA0241AA90AAlso listed as SUZ-KA24NA27 of 33 models have all five ratings · AHRI 213362277
Ducted, 2.5–3 tons	75.4(50 is the typical model of its size class)ES-27Z-M3B40 of 40 models have all five ratings · AHRI 210857387	87.2(50 is the typical model of its size class) (higher)PUZ-HA36NKA1***with ducted air handler PVA-A36AAAlso sold as Trane / Mitsubishi Electric PUZ-HA36NKA, Trane / Mitsubishi Electric TRUZH0361KA00, Trane / Mitsubishi Electric TRUZH0361KA00NA, Trane / Mitsubishi Electric TRUZH0361KA1069 of 82 models have all five ratings · AHRI 213617710
Ducted, 3.5–4.5 tons	82.0(50 is the typical model of its size class) (higher)ACIQ-48Z-HH-M5B50 of 53 models have all five ratings · AHRI 207825586	72.3(50 is the typical model of its size class)TRUZA0421KA70**with ducted air handler PEAD-A42AAAlso listed as PUZ-A42NKA735 of 48 models have all five ratings · AHRI 206720345
Ducted, 5 tons and up	54.0(50 is the typical model of its size class)H4H5S60KAAAwith ducted air handler FJMA460L*D4 of 4 models have all five ratings · AHRI 213069077	78.5(50 is the typical model of its size class) (higher)PUMY-P60NKMU36 of 8 models have all five ratings · AHRI 204834217
Non-ducted, up to 1.5 tons	92.0(50 is the typical model of its size class)ACIQ-06ZPL-HP230Bwith ductless indoor unit ACIQ-06W-HH-MC22 of 22 models have all five ratings · AHRI 210857314	98.6(50 is the typical model of its size class) (higher)NAXSPH06B112A*with ductless indoor unit NAXWPH06B112AA125 of 146 models have all five ratings · AHRI 206195819
Non-ducted, 2 tons	84.3(50 is the typical model of its size class) (higher)ACIQ-24ZPL-HP230Bwith ductless indoor unit ACIQ-24W-HH-MB6 of 6 models have all five ratings · AHRI 207825534	82.0(50 is the typical model of its size class)TRUZH0241HA10**with ductless indoor unit PLA-A24EA27 of 33 models have all five ratings · AHRI 206720350
Non-ducted, 2.5–3 tons	82.8(50 is the typical model of its size class)ACIQ-36Z-HH-M4B11 of 14 models have all five ratings · AHRI 207825582	90.7(50 is the typical model of its size class) (higher)PUMY-HP36NKMU1Also sold as Trane / Mitsubishi Electric NTXMSH36A142A; also listed as MXZ-SM36NAMHZ54 of 64 models have all five ratings · AHRI 204834272
Non-ducted, 3.5–4.5 tons	77.9(50 is the typical model of its size class)ACIQ-48Z-HH-M5B7 of 7 models have all five ratings · AHRI 207825585	91.7(50 is the typical model of its size class) (higher)PUMY-HP48NKMU1Also sold as Trane / Mitsubishi Electric NTXMSH48A182A; also listed as MXZ-SM48NAMHZ33 of 46 models have all five ratings · AHRI 204834275
Non-ducted, 5 tons and up	No models in this size class	66.1(50 is the typical model of its size class)PUMY-P60NKMU38 of 10 models have all five ratings · AHRI 204834276

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	ACIQ	Mitsubishi Electric
COP at 5°F	beats 93% · 2.57R4H5S30KAAA*Ducted, 2.5–3 tons	beats 100% · 2.90PUZ-A30NHA7***Also sold as Trane / Mitsubishi Electric TRUZA0301HA70Non-ducted, 2.5–3 tons
Capacity retention at 5°F	beats 100% · 140%HVH837GKA2*Ducted, 2.5–3 tons	beats 100% · 88%MXZ-SM60NAM***Ducted, 5 tons and up
HSPF2	beats 99% · 10.3ACIQ-48ZPL-HP230BDucted, 3.5–4.5 tons	beats 100% · 12.0PUMY-HP36NKMU1Also sold as Trane / Mitsubishi Electric NTXMSH36A142A; also listed as MXZ-SM36NAMHZNon-ducted, 2.5–3 tons
SEER2	beats 99% · 24.6ES-27Z-M3BNon-ducted, 2.5–3 tons	beats 100% · 32.2MUZ-FH06NAHNon-ducted, up to 1.5 tons
EER2	beats 99% · 16.6SC-09ZPL-HP230Non-ducted, up to 1.5 tons	beats 100% · 19.1NAXSPH06B112A*Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 99% · 56,500 Btu/hACIQ-60ZPL-HP230BNon-ducted, 3.5–4.5 tons	beats 100% · 57,000 Btu/hMXZ-SM60NAM***Ducted, 5 tons and up

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ACIQ vs Mitsubishi Electric heat pumps