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

Lennox
York
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Lennox	York
Efficiency index	56% (higher)median — · 13th ranked	51% (higher)median — · 21st ranked
COP at 5°F	58%median 2.00 · 10th ranked	69%median 2.20 · 5th ranked
Capacity retention at 5°F	48%median 67% · 19th ranked	50%median 69% · 18th ranked
HSPF2	49% (higher)median 8.5 · 17th ranked	37% (higher)median 7.7 · 23rd ranked
SEER2	49% (higher)median 17.0 · 17th ranked	38% (higher)median 15.2 · 24th ranked
EER2	54%median 11.6 · 14th ranked	57%median 11.0 · 9th ranked
Heating capacity at 5°F	48%median 18,560 Btu/h · 18th ranked	49%median 24,200 Btu/h · 17th ranked
Outdoor models	313	179
AHRI certifications	75,630	65,299

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Lennox	York
CEE 2025 Tier 1 (Split ASHP)	46%144 models	26.3%47 models
CEE 2026 Tier 1 (Split ASHP)	45%141 models	26.3%47 models
CEE Advanced Tier (Split ASHP)	1%3 models	0.6%1 models
Xcel Energy Colorado cold-climate ASHP (2025)	29.4%92 models	25.7%46 models
DOE Cold Climate Heat Pump Challenge	1%3 models	0.6%1 models
ENERGY STAR Cold Climate	19.8%62 models	2.2%4 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 · 10 groups where both have models

Lennox
York
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	Lennox	York
Ducted, up to 1.5 tons	31 · index 60%	8 · index 42%
Ducted, 2 tons	35 · index 58%	17 · index 47%
Ducted, 2.5–3 tons	72 · index 55%	53 · index 51%
Ducted, 3.5–4.5 tons	86 · index 57%	71 · index 60%
Ducted, 5 tons and up	13 · index 45%	19 · index 50%
Non-ducted, up to 1.5 tons	66 · index 54%	9 · index 25%
Non-ducted, 2 tons	22 · index 57%	2 · index 41%
Non-ducted, 2.5–3 tons	37 · index 55%	6 · index 54%
Non-ducted, 3.5–4.5 tons	16 · index 57%	5 · index 46%
Non-ducted, 5 tons and up	1 · index 36%	2 · index 46%

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	YorkCold-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	59.7(50 is the typical model of its size class)THF2B18S21with ducted air handler AE(D,N,U)+CM24D24+TDR7 of 8 models qualify · AHRI 214606310
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	60.6(50 is the typical model of its size class)THE2B24T21with ducted air handler AX242BTA10 of 16 models qualify · AHRI 211634285
Ducted, 2.5–3 tons	83.4(50 is the typical model of its size class)MLB036S4S-1Pwith ducted air handler MMDB036S4-2PAlso listed as MLB036S4S-2P23 of 74 models qualify · AHRI 205782160	83.8(50 is the typical model of its size class) (higher)HMH72B341with indoor coil CM36B36+TDR and furnace TM9V120D20MP1222 of 53 models qualify · AHRI 211628039
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	77.7(50 is the typical model of its size class)RHP15048B21with ducted air handler L(E,G)M60A4Also sold as Champion Heating and Cooling THF2B48T2124 of 72 models qualify · AHRI 213612208
Ducted, 5 tons and up	None on this board (0 of 13 models qualify)	70.2(50 is the typical model of its size class)YMKE60BNJMFMO-X1 of 19 models qualify · AHRI 205739196
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	64.2(50 is the typical model of its size class)DHS18CMB22S5 of 9 models qualify · AHRI 207616532
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	66.1(50 is the typical model of its size class)DHS24CMB22S1 of 2 models qualify · AHRI 207616534
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	60.8(50 is the typical model of its size class)YVAHP036B21S*Also sold as Coleman CVAHP036B21S5 of 6 models qualify · AHRI 203994967
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)DHS42CMB22S1 of 5 models qualify · AHRI 207616540
Non-ducted, 5 tons and up	None on this board (0 of 1 models qualify)	None on this board (0 of 2 models qualify)

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	YorkAll-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	57.1(50 is the typical model of its size class)YH2F18SB21with ducted air handler AE*S+CM24C24+TDR7 of 7 models have all five ratings · AHRI 216437405
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)YMSJYH024BAAND-1with ducted air handler YMSJXH024BAAN--517 of 17 models have all five ratings · AHRI 217734524
Ducted, 2.5–3 tons	83.7(50 is the typical model of its size class) (higher)A-VMH36QV-1A47 of 69 models have all five ratings · AHRI 214377757	76.1(50 is the typical model of its size class)YMSJYH048BAAND-1with ducted air handler YMSJXH048BAAN--534 of 51 models have all five ratings · AHRI 217734526
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	83.7(50 is the typical model of its size class)YZV48B21with indoor coil XAMC48HE3N1+CC and furnace TM9V100C16MP1248 of 73 models have all five ratings · AHRI 211207031
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	75.1(50 is the typical model of its size class) (higher)YMKE60BNJMFMO-X12 of 20 models have all five ratings · AHRI 205739196
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	50.6(50 is the typical model of its size class)DHS18CMB22S9 of 9 models have all five ratings · AHRI 207616532
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	55.4(50 is the typical model of its size class)DHS24CMB22S2 of 2 models have all five ratings · AHRI 207616534
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	74.6(50 is the typical model of its size class)YVAHP036B21S*Also sold as Coleman CVAHP036B21S5 of 6 models have all five ratings · AHRI 203994967
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	67.0(50 is the typical model of its size class)YVAHP048B21S*Also sold as Coleman CVAHP048B21S3 of 5 models have all five ratings · AHRI 203994968
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	68.5(50 is the typical model of its size class) (higher)YVAHP060B21S*2 of 2 models have all five ratings · AHRI 203994964

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	York
COP at 5°F	beats 100% · 3.194HP18V36PDucted, 2 tons	beats 100% · 3.44THE2B42T21Ducted, 2.5–3 tons
Capacity retention at 5°F	beats 100% · 147%4HP17L18P-**ADucted, up to 1.5 tons	beats 100% · 149%THE2B18S21Ducted, up to 1.5 tons
HSPF2	beats 99% · 10.3MLB048S4S-1PDucted, 3.5–4.5 tons	beats 98% · 10.0YVAHP048B21S*Also sold as Coleman CVAHP048B21SDucted, 3.5–4.5 tons
SEER2	beats 100% · 21.8SL25XPV-048-230A**Ducted, 3.5–4.5 tons	beats 96% · 18.0YMKE60BNJMFMO-XDucted, 5 tons and up
EER2	beats 100% · 15.0SL25XPV-024-230A**Ducted, 2 tons	beats 100% · 16.7YVAHP048B21S*Also sold as Coleman CVAHP048B21SNon-ducted, 3.5–4.5 tons
Heating capacity at 5°F	beats 100% · 42,926 Btu/hMLB036S4S-2PNon-ducted, 2.5–3 tons	beats 99% · 21,800 Btu/hDHS18CMB22SNon-ducted, up to 1.5 tons

More comparisons

Pick any two manufacturers

Lennox vs York heat pumps