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.

Rheem and Trane 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, Rheem scores higher on 4 of the 6 ratings.

Rheem
Trane
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Rheem	Trane
Efficiency index	54% (higher)median — · 16th ranked	52% (higher)median — · 18th ranked
COP at 5°F	69%median 2.10 · 4th ranked	69%median 2.18 · 3rd ranked
Capacity retention at 5°F	59% (higher)median 73% · 10th ranked	43% (higher)median 63% · 22nd ranked
HSPF2	49% (higher)median 8.1 · 18th ranked	35% (higher)median 7.8 · 25th ranked
SEER2	44% (higher)median 16.0 · 21st ranked	36% (higher)median 15.2 · 25th ranked
EER2	46%median 10.6 · 20th ranked	65%median 11.7 · 4th ranked
Heating capacity at 5°F	58% (higher)median 22,000 Btu/h · 8th ranked	41% (higher)median 20,000 Btu/h · 23rd ranked
Outdoor models	291	309
AHRI certifications	15,614	102,516

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Rheem	Trane
CEE 2025 Tier 1 (Split ASHP)	40.2%117 models	31.4%97 models
CEE 2026 Tier 1 (Split ASHP)	39.2%114 models	26.2%81 models
CEE Advanced Tier (Split ASHP)	5.5%16 models	0.3%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	35.1%102 models	22%68 models
DOE Cold Climate Heat Pump Challenge	5.5%16 models	0.3%1 models
ENERGY STAR Cold Climate	15.5%45 models	10%31 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

Rheem
Trane
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	Rheem	Trane
Ducted, up to 1.5 tons	25 · index 40%	25 · index 35%
Ducted, 2 tons	32 · index 49%	53 · index 50%
Ducted, 2.5–3 tons	64 · index 51%	86 · index 54%
Ducted, 3.5–4.5 tons	85 · index 52%	108 · index 60%
Ducted, 5 tons and up	17 · index 69%	7 · index 46%
Non-ducted, up to 1.5 tons	59 · index 64%	23 · index 38%
Non-ducted, 2 tons	12 · index 64%	7 · index 54%
Non-ducted, 2.5–3 tons	20 · index 57%	10 · index 59%
Non-ducted, 3.5–4.5 tons	8 · index 50%	1 · index 19%

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	RheemCold-climate score, best model	TraneCold-climate score, best model
Ducted, up to 1.5 tons	83.5(50 is the typical model of its size class) (higher)RO1HHZ12AJ8Swith ducted air handler RIMHHZ12AJ8S13 of 26 models qualify · AHRI 210824724	62.8(50 is the typical model of its size class)4A6H4018N1with ducted air handler AE(D,N,U)+CM30B34+TDR12 of 22 models qualify · AHRI 212361095
Ducted, 2 tons	75.4(50 is the typical model of its size class) (higher)UOMH24FXZHJAlso listed as ROMH24FXZHJ, RO3HFZ24AJ1H14 of 31 models qualify · AHRI 10595427	75.3(50 is the typical model of its size class)4TXD2036A10NU*with ducted air handler F,PEG3493022 of 55 models qualify · AHRI 212396569
Ducted, 2.5–3 tons	86.6(50 is the typical model of its size class) (higher)RO1HHZ30AJ8Swith ducted air handler RIMHHZ30AJ8S24 of 64 models qualify · AHRI 211781741	82.2(50 is the typical model of its size class)4TWV0X36A1with indoor coil D(A,C,E)48C34+TDR and furnace S9V2C080U5PSC+RP32 of 87 models qualify · AHRI 215472282
Ducted, 3.5–4.5 tons	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	84.1(50 is the typical model of its size class)4A6C7048A3with ducted air handler 4PX*DU60BS3+P0V0C000M50SCAlso listed as 4A6C7048A417 of 108 models qualify · AHRI 213867310
Ducted, 5 tons and up	None on this board (0 of 17 models qualify)	None on this board (0 of 7 models qualify)
Non-ducted, up to 1.5 tons	95.0(50 is the typical model of its size class) (higher)RO1HGZ15AJ1Swith ductless indoor unit UIWHGZ15AJ1S45 of 59 models qualify · AHRI 210368107	80.1(50 is the typical model of its size class)4TXK3809B10NU**with ductless indoor unit 4MXW3809B10NU16 of 23 models qualify · AHRI 204340354
Non-ducted, 2 tons	87.3(50 is the typical model of its size class) (higher)RO1HHZ24AJ2Swith ductless indoor unit UIWHHZ24AJ2S10 of 12 models qualify · AHRI 210368117	76.1(50 is the typical model of its size class)4TXM2124A13N0**4 of 7 models qualify · AHRI 210435406
Non-ducted, 2.5–3 tons	89.6(50 is the typical model of its size class) (higher)RO1HHZ30AJ8Swith ductless indoor unit RIGHHZ30AJ8S15 of 20 models qualify · AHRI 211781745	73.7(50 is the typical model of its size class)4TXM2142A15N0**7 of 10 models qualify · AHRI 210435409
Non-ducted, 3.5–4.5 tons	75.3(50 is the typical model of its size class) (higher)ROSH42VGSNwith ductless indoor unit RICH42AXCJAlso sold as RUUD UOSH42VGSN; also listed as RO1HGZ42AJ8S5 of 8 models qualify · AHRI 202245810	31.6(50 is the typical model of its size class)4TXM2336A15NU**1 of 1 models qualify · AHRI 206319651

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	RheemAll-around score, best model	TraneAll-around score, best model
Ducted, up to 1.5 tons	82.7(50 is the typical model of its size class) (higher)RO1HHZ12AJ8Swith ducted air handler RIMHHZ12AJ8S24 of 25 models have all five ratings · AHRI 210824724	52.8(50 is the typical model of its size class)4TWR5018N1with indoor coil D(A,C,E)30A34+TDR and furnace *UD2B060A9V3Also sold as American Standard 4A6H5018N120 of 23 models have all five ratings · AHRI 212367293
Ducted, 2 tons	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	77.1(50 is the typical model of its size class)4TWV8X24A1with indoor coil D(A,C,E)36C34+TDR and furnace S9V2B060U4PSB+RP42 of 52 models have all five ratings · AHRI 215472297
Ducted, 2.5–3 tons	87.2(50 is the typical model of its size class) (higher)UP18AZ36AJVCwith indoor coil RCFZ6021SEAAM and furnace U802VA075317M44 of 65 models have all five ratings · AHRI 210589396	85.1(50 is the typical model of its size class)4TWV0X36A1with indoor coil D(A,C,E)48C34+TDR and furnace S9V2C080U5PSC+RP69 of 83 models have all five ratings · AHRI 215472282
Ducted, 3.5–4.5 tons	81.5(50 is the typical model of its size class)RP18AZ48AJVCwith ducted air handler RHMVZ6021SEACA46 of 84 models have all five ratings · AHRI 208552859	86.2(50 is the typical model of its size class) (higher)4A6C7048A3with ducted air handler 4PX*DU60BS3+P0V0C000M50SCAlso listed as 4A6C7048A490 of 114 models have all five ratings · AHRI 213867310
Ducted, 5 tons and up	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	81.0(50 is the typical model of its size class) (higher)4TWL9060A1with indoor coil TEM8B0C60V51+TDR and furnace N/AAlso sold as American Standard 4A6L9060A16 of 7 models have all five ratings · AHRI 207820927
Non-ducted, up to 1.5 tons	96.4(50 is the typical model of its size class) (higher)RO1HGZ09AJ1Swith ductless indoor unit UIWHGZ09AJ1S49 of 59 models have all five ratings · AHRI 210368099	88.7(50 is the typical model of its size class)4TXK3809B10NU**with ductless indoor unit 4MXW3809B10NU21 of 23 models have all five ratings · AHRI 204340354
Non-ducted, 2 tons	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	71.5(50 is the typical model of its size class)4TXM2124A13N0**5 of 7 models have all five ratings · AHRI 210435406
Non-ducted, 2.5–3 tons	79.2(50 is the typical model of its size class) (higher)UOMH36FXZHJAlso listed as ROMH36FXZHJ, RO4HFZ36AJ1H19 of 20 models have all five ratings · AHRI 10595431	70.2(50 is the typical model of its size class)4TXM2142A15N0**7 of 10 models have all five ratings · AHRI 210435409
Non-ducted, 3.5–4.5 tons	65.1(50 is the typical model of its size class) (higher)ROSH42VGSNwith ductless indoor unit RICH42AXCJAlso sold as RUUD UOSH42VGSN; also listed as RO1HGZ42AJ8S8 of 8 models have all five ratings · AHRI 202245810	18.7(50 is the typical model of its size class)4TXM2336A15NU**1 of 1 models have all five ratings · AHRI 206319651

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	Rheem	Trane
COP at 5°F	beats 100% · 3.15RP15AZ24AJ2NDucted, 2 tons	beats 100% · 3.604A6C7048A3Also listed as 4A6C7048A4Ducted, 3.5–4.5 tons
Capacity retention at 5°F	beats 100% · 149%ROSH09AFFHJNon-ducted, up to 1.5 tons	beats 100% · 120%4A6H4042N1Ducted, 3.5–4.5 tons
HSPF2	beats 98% · 13.4RO1HGZ09AJ1SNon-ducted, up to 1.5 tons	beats 88% · 11.04TXK3809B10NU**Non-ducted, up to 1.5 tons
SEER2	beats 100% · 33.1RO1HGZ09AJ1SNon-ducted, up to 1.5 tons	beats 99% · 19.04TWL9060A1Also sold as American Standard 4A6L9060A1Ducted, 5 tons and up
EER2	beats 100% · 18.0RO1HGZ09AJ1SNon-ducted, up to 1.5 tons	beats 99% · 16.64TXK3809B10NU**Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 100% · 43,500 Btu/hRP18AZ36AJVCAlso sold as RUUD UP18AZ36AJVCDucted, 2.5–3 tons	beats 100% · 34,000 Btu/hE4HL5018A1000ADucted, up to 1.5 tons

More comparisons

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Rheem vs Trane heat pumps