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.

Lennox 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, Lennox scores higher on 4 of the 6 ratings.

Lennox
Trane
Other ranked manufacturers

Source: AHRI Directory, NEEP · as of Oct 9, 2026

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Lennox	Trane
Efficiency index	56% (higher)median — · 13th ranked	52% (higher)median — · 18th ranked
COP at 5°F	58%median 2.00 · 10th ranked	69%median 2.18 · 3rd ranked
Capacity retention at 5°F	48% (higher)median 67% · 19th ranked	43% (higher)median 63% · 22nd ranked
HSPF2	49% (higher)median 8.5 · 17th ranked	35% (higher)median 7.8 · 25th ranked
SEER2	49% (higher)median 17.0 · 17th ranked	36% (higher)median 15.2 · 25th ranked
EER2	54%median 11.6 · 14th ranked	65%median 11.7 · 4th ranked
Heating capacity at 5°F	48% (higher)median 18,560 Btu/h · 18th ranked	41% (higher)median 20,000 Btu/h · 23rd ranked
Outdoor models	313	309
AHRI certifications	75,630	102,516

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Lennox	Trane
CEE 2025 Tier 1 (Split ASHP)	46%144 models	31.4%97 models
CEE 2026 Tier 1 (Split ASHP)	45%141 models	26.2%81 models
CEE Advanced Tier (Split ASHP)	1%3 models	0.3%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	29.4%92 models	22%68 models
DOE Cold Climate Heat Pump Challenge	1%3 models	0.3%1 models
ENERGY STAR Cold Climate	19.8%62 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

Lennox
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 9, 2026

Models per peer group · efficiency index within the group
Size and duct type	Lennox	Trane
Ducted, up to 1.5 tons	31 · index 60%	25 · index 35%
Ducted, 2 tons	35 · index 58%	53 · index 50%
Ducted, 2.5–3 tons	72 · index 55%	86 · index 54%
Ducted, 3.5–4.5 tons	86 · index 57%	108 · index 60%
Ducted, 5 tons and up	13 · index 45%	7 · index 46%
Non-ducted, up to 1.5 tons	66 · index 54%	23 · index 38%
Non-ducted, 2 tons	22 · index 57%	7 · index 54%
Non-ducted, 2.5–3 tons	37 · index 55%	10 · index 59%
Non-ducted, 3.5–4.5 tons	16 · index 57%	1 · index 19%
Non-ducted, 5 tons and up	1 · index 36%	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	LennoxCold-climate score, best model	TraneCold-climate score, best model
Ducted, up to 1.5 tons	77.6(50 is the typical model of its size class) (higher)MPC009S4S-1Pwith ducted air handler MMDB009S4-*PAlso sold as AirEase 4DHPS209S-1P21 of 31 models qualify · AHRI 211034423	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	81.1(50 is the typical model of its size class) (higher)MPC024S4S-1Pwith ducted air handler MMDB024S4-*PAlso sold as AirEase 4DHP2S24S-1P17 of 34 models qualify · AHRI 211034426	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	83.4(50 is the typical model of its size class) (higher)MLB036S4S-1Pwith ducted air handler MMDB036S4-2PAlso listed as MLB036S4S-2P23 of 74 models qualify · AHRI 205782160	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	88.9(50 is the typical model of its size class) (higher)MLB048S4S-1Pwith ducted air handler MMDB048S4-2P18 of 85 models qualify · AHRI 205782161	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 13 models qualify)	None on this board (0 of 7 models qualify)
Non-ducted, up to 1.5 tons	90.2(50 is the typical model of its size class) (higher)MPC009S4S-1Pwith ductless indoor unit MWMC006S4-2P34 of 66 models qualify · AHRI 213199199	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	86.1(50 is the typical model of its size class) (higher)MLB024S4S-1Pwith ductless indoor unit M33C024S4-1PAlso sold as Comfort-Aire A-VMH24SV-114 of 22 models qualify · AHRI 207683534	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	90.9(50 is the typical model of its size class) (higher)A-VMH36QV-1A12 of 37 models qualify · AHRI 214377756	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	81.3(50 is the typical model of its size class) (higher)MLB048S4S-2Pwith ductless indoor unit M33C048S4-*P8 of 16 models qualify · AHRI 211034460	31.6(50 is the typical model of its size class)4TXM2336A15NU**1 of 1 models qualify · AHRI 206319651
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	LennoxAll-around score, best model	TraneAll-around score, best model
Ducted, up to 1.5 tons	85.6(50 is the typical model of its size class) (higher)MLB009S4S-1Pwith ducted air handler MMDB009S4-2P30 of 31 models have all five ratings · AHRI 207683524	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	84.1(50 is the typical model of its size class) (higher)EL22XPV-024-230Awith ducted air handler CBK47UHET-030-230-0Also sold as Armstrong Air 4SHP22LX124P-A29 of 35 models have all five ratings · AHRI 214861258	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	83.7(50 is the typical model of its size class)A-VMH36QV-1A47 of 69 models have all five ratings · AHRI 214377757	85.1(50 is the typical model of its size class) (higher)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	87.7(50 is the typical model of its size class) (higher)SL25XPV-048-230A*with ducted air handler CBA38MV-048-230+TDR49 of 84 models have all five ratings · AHRI 207436541	86.2(50 is the typical model of its size class)4A6C7048A3with ducted air handler 4PX*DU60BS3+P0V0C000M50SCAlso listed as 4A6C7048A490 of 114 models have all five ratings · AHRI 213867310
Ducted, 5 tons and up	68.9(50 is the typical model of its size class)4HP17L60P-**Awith ducted air handler L(E,G)M60H412 of 18 models have all five ratings · AHRI 212431768	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	92.4(50 is the typical model of its size class) (higher)MPC009S4S-1Pwith ductless indoor unit MWMC006S4-2P59 of 66 models have all five ratings · AHRI 213199199	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	84.3(50 is the typical model of its size class) (higher)MLB024S4S-1Pwith ductless indoor unit MWMC024S4-1PAlso sold as Comfort-Aire A-VMH24SV-1, Comfort-Aire A-VMH24SU-1, Comfort-Aire A-KMH24SU-120 of 22 models have all five ratings · AHRI 207683523	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	86.4(50 is the typical model of its size class) (higher)A-VMH36QV-1A27 of 37 models have all five ratings · AHRI 214377756	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	77.9(50 is the typical model of its size class) (higher)MLB048S4M-2PAlso sold as Comfort-Aire A-VMH48PV-1, Allied 4DHP2S48M-1P11 of 16 models have all five ratings · AHRI 207699107	18.7(50 is the typical model of its size class)4TXM2336A15NU**1 of 1 models have all five ratings · AHRI 206319651
Non-ducted, 5 tons and up	36.2(50 is the typical model of its size class)GMV-60WL/C-T(U)1 of 1 models have all five ratings · AHRI 214728288	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	Lennox	Trane
COP at 5°F	beats 100% · 3.194HP18V36PDucted, 2 tons	beats 100% · 3.604A6C7048A3Also listed as 4A6C7048A4Ducted, 3.5–4.5 tons
Capacity retention at 5°F	beats 100% · 147%4HP17L18P-**ADucted, up to 1.5 tons	beats 100% · 120%4A6H4042N1Ducted, 3.5–4.5 tons
HSPF2	beats 99% · 10.3MLB048S4S-1PDucted, 3.5–4.5 tons	beats 88% · 11.04TXK3809B10NU**Non-ducted, up to 1.5 tons
SEER2	beats 100% · 21.8SL25XPV-048-230A**Ducted, 3.5–4.5 tons	beats 99% · 19.04TWL9060A1Also sold as American Standard 4A6L9060A1Ducted, 5 tons and up
EER2	beats 100% · 15.0SL25XPV-024-230A**Ducted, 2 tons	beats 99% · 16.64TXK3809B10NU**Non-ducted, up to 1.5 tons
Heating capacity at 5°F	beats 100% · 42,926 Btu/hMLB036S4S-2PNon-ducted, 2.5–3 tons	beats 100% · 34,000 Btu/hE4HL5018A1000ADucted, up to 1.5 tons

More comparisons

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Lennox vs Trane heat pumps