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.

Mitsubishi Electric and Rheem 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 4 of the 6 ratings.

Mitsubishi Electric
Rheem
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Mitsubishi Electric	Rheem
Efficiency index	65% (higher)median — · 3rd ranked	54% (higher)median — · 16th ranked
COP at 5°F	67%median 2.08 · 6th ranked	69%median 2.10 · 4th ranked
Capacity retention at 5°F	55%median 73% · 15th ranked	59%median 73% · 10th ranked
HSPF2	72% (higher)median 10.0 · 1st ranked	49% (higher)median 8.1 · 18th ranked
SEER2	63% (higher)median 20.2 · 5th ranked	44% (higher)median 16.0 · 21st ranked
EER2	65% (higher)median 12.8 · 3rd ranked	46% (higher)median 10.6 · 20th ranked
Heating capacity at 5°F	59% (higher)median 18,650 Btu/h · 6th ranked	58% (higher)median 22,000 Btu/h · 8th ranked
Outdoor models	373	291
AHRI certifications	1,233	15,614

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Mitsubishi Electric	Rheem
CEE 2025 Tier 1 (Split ASHP)	67.8%253 models	40.2%117 models
CEE 2026 Tier 1 (Split ASHP)	66.5%248 models	39.2%114 models
CEE Advanced Tier (Split ASHP)	6.4%24 models	5.5%16 models
Xcel Energy Colorado cold-climate ASHP (2025)	53.6%200 models	35.1%102 models
DOE Cold Climate Heat Pump Challenge	6.4%24 models	5.5%16 models
ENERGY STAR Cold Climate	37.3%139 models	15.5%45 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

Mitsubishi Electric
Rheem
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	Mitsubishi Electric	Rheem
Ducted, up to 1.5 tons	56 · index 63%	25 · index 40%
Ducted, 2 tons	33 · index 56%	32 · index 49%
Ducted, 2.5–3 tons	82 · index 66%	64 · index 51%
Ducted, 3.5–4.5 tons	48 · index 59%	85 · index 52%
Ducted, 5 tons and up	8 · index 68%	17 · index 69%
Non-ducted, up to 1.5 tons	146 · index 65%	59 · index 64%
Non-ducted, 2 tons	33 · index 68%	12 · index 64%
Non-ducted, 2.5–3 tons	64 · index 69%	20 · index 57%
Non-ducted, 3.5–4.5 tons	46 · index 74%	8 · index 50%
Non-ducted, 5 tons and up	10 · index 60%	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	Mitsubishi ElectricCold-climate score, best model	RheemCold-climate score, best model
Ducted, up to 1.5 tons	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	83.5(50 is the typical model of its size class) (higher)RO1HHZ12AJ8Swith ducted air handler RIMHHZ12AJ8S13 of 26 models qualify · AHRI 210824724
Ducted, 2 tons	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	75.4(50 is the typical model of its size class) (higher)UOMH24FXZHJAlso listed as ROMH24FXZHJ, RO3HFZ24AJ1H14 of 31 models qualify · AHRI 10595427
Ducted, 2.5–3 tons	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	86.6(50 is the typical model of its size class)RO1HHZ30AJ8Swith ducted air handler RIMHHZ30AJ8S24 of 64 models qualify · AHRI 211781741
Ducted, 3.5–4.5 tons	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	87.0(50 is the typical model of its size class) (higher)ROSH42VGSNwith ducted air handler RIDH42AXCJAlso sold as RUUD RO1HGZ42AJ8S23 of 85 models qualify · AHRI 207590035
Ducted, 5 tons and up	72.8(50 is the typical model of its size class)MXZ-SM60NAM***5 of 8 models qualify · AHRI 213248843	None on this board (0 of 17 models qualify)
Non-ducted, up to 1.5 tons	97.3(50 is the typical model of its size class) (higher)NAXSPH06B112A*with ductless indoor unit NAXWPH06B112AA77 of 146 models qualify · AHRI 206195819	95.0(50 is the typical model of its size class)RO1HGZ15AJ1Swith ductless indoor unit UIWHGZ15AJ1S45 of 59 models qualify · AHRI 210368107
Non-ducted, 2 tons	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	87.3(50 is the typical model of its size class) (higher)RO1HHZ24AJ2Swith ductless indoor unit UIWHHZ24AJ2S10 of 12 models qualify · AHRI 210368117
Non-ducted, 2.5–3 tons	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	89.6(50 is the typical model of its size class)RO1HHZ30AJ8Swith ductless indoor unit RIGHHZ30AJ8S15 of 20 models qualify · AHRI 211781745
Non-ducted, 3.5–4.5 tons	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	75.3(50 is the typical model of its size class)ROSH42VGSNwith ductless indoor unit RICH42AXCJAlso sold as RUUD UOSH42VGSN; also listed as RO1HGZ42AJ8S5 of 8 models qualify · AHRI 202245810
Non-ducted, 5 tons and up	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	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	Mitsubishi ElectricAll-around score, best model	RheemAll-around score, best model
Ducted, up to 1.5 tons	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	82.7(50 is the typical model of its size class)RO1HHZ12AJ8Swith ducted air handler RIMHHZ12AJ8S24 of 25 models have all five ratings · AHRI 210824724
Ducted, 2 tons	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	83.6(50 is the typical model of its size class) (higher)RP18AZ24AJVCwith indoor coil RCFZ2421HEAAM and furnace R98VB085M521U28 of 31 models have all five ratings · AHRI 213163975
Ducted, 2.5–3 tons	87.2(50 is the typical model of its size class)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	87.2(50 is the typical model of its size class)UP18AZ36AJVCwith indoor coil RCFZ6021SEAAM and furnace U802VA075317M44 of 65 models have all five ratings · AHRI 210589396
Ducted, 3.5–4.5 tons	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	81.5(50 is the typical model of its size class) (higher)RP18AZ48AJVCwith ducted air handler RHMVZ6021SEACA46 of 84 models have all five ratings · AHRI 208552859
Ducted, 5 tons and up	78.5(50 is the typical model of its size class) (higher)PUMY-P60NKMU36 of 8 models have all five ratings · AHRI 204834217	70.9(50 is the typical model of its size class)RP15AZ60AJ2Nwith ducted air handler V,R60H210P309+AEFE5Also listed as WP15AZ60AJ2N5 of 18 models have all five ratings · AHRI 213088753
Non-ducted, up to 1.5 tons	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	96.4(50 is the typical model of its size class)RO1HGZ09AJ1Swith ductless indoor unit UIWHGZ09AJ1S49 of 59 models have all five ratings · AHRI 210368099
Non-ducted, 2 tons	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	86.5(50 is the typical model of its size class) (higher)RO1HHZ24AJ8Swith ductless indoor unit RIGHHZ24AJ8S12 of 12 models have all five ratings · AHRI 211781744
Non-ducted, 2.5–3 tons	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	79.2(50 is the typical model of its size class)UOMH36FXZHJAlso listed as ROMH36FXZHJ, RO4HFZ36AJ1H19 of 20 models have all five ratings · AHRI 10595431
Non-ducted, 3.5–4.5 tons	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	65.1(50 is the typical model of its size class)ROSH42VGSNwith ductless indoor unit RICH42AXCJAlso sold as RUUD UOSH42VGSN; also listed as RO1HGZ42AJ8S8 of 8 models have all five ratings · AHRI 202245810
Non-ducted, 5 tons and up	66.1(50 is the typical model of its size class)PUMY-P60NKMU38 of 10 models have all five ratings · AHRI 204834276	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	Mitsubishi Electric	Rheem
COP at 5°F	beats 100% · 2.90PUZ-A30NHA7***Also sold as Trane / Mitsubishi Electric TRUZA0301HA70Non-ducted, 2.5–3 tons	beats 100% · 3.15RP15AZ24AJ2NDucted, 2 tons
Capacity retention at 5°F	beats 100% · 88%MXZ-SM60NAM***Ducted, 5 tons and up	beats 100% · 149%ROSH09AFFHJNon-ducted, up to 1.5 tons
HSPF2	beats 100% · 12.0PUMY-HP36NKMU1Also sold as Trane / Mitsubishi Electric NTXMSH36A142A; also listed as MXZ-SM36NAMHZNon-ducted, 2.5–3 tons	beats 98% · 13.4RO1HGZ09AJ1SNon-ducted, up to 1.5 tons
SEER2	beats 100% · 32.2MUZ-FH06NAHNon-ducted, up to 1.5 tons	beats 100% · 33.1RO1HGZ09AJ1SNon-ducted, up to 1.5 tons
EER2	beats 100% · 19.1NAXSPH06B112A*Non-ducted, up to 1.5 tons	beats 100% · 18.0RO1HGZ09AJ1SNon-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 100% · 57,000 Btu/hMXZ-SM60NAM***Ducted, 5 tons and up	beats 100% · 43,500 Btu/hRP18AZ36AJVCAlso sold as RUUD UP18AZ36AJVCDucted, 2.5–3 tons

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Mitsubishi Electric vs Rheem heat pumps