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.

Gree and Lennox 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, Gree and Lennox split the 6 ratings 3–3.

Gree
Lennox
Other ranked manufacturers

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

Average peer percentile, raw median and rank among ranked manufacturers
Rating	Gree	Lennox
Efficiency index	47%median — · 24th ranked	56%median — · 13th ranked
COP at 5°F	38%median 1.82 · 27th ranked	58%median 2.00 · 10th ranked
Capacity retention at 5°F	55% (higher)median 73% · 13th ranked	48% (higher)median 67% · 19th ranked
HSPF2	44%median 8.5 · 19th ranked	49%median 8.5 · 17th ranked
SEER2	50% (higher)median 18.0 · 15th ranked	49% (higher)median 17.0 · 17th ranked
EER2	44%median 11.3 · 23rd ranked	54%median 11.6 · 14th ranked
Heating capacity at 5°F	54% (higher)median 19,250 Btu/h · 13th ranked	48% (higher)median 18,560 Btu/h · 18th ranked
Outdoor models	395	313
AHRI certifications	6,470	75,630

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
Standard	Gree	Lennox
CEE 2025 Tier 1 (Split ASHP)	59%233 models	46%144 models
CEE 2026 Tier 1 (Split ASHP)	56.5%223 models	45%141 models
CEE Advanced Tier (Split ASHP)	0%0 models	1%3 models
Xcel Energy Colorado cold-climate ASHP (2025)	56.5%223 models	29.4%92 models
DOE Cold Climate Heat Pump Challenge	0%0 models	1%3 models
ENERGY STAR Cold Climate	44.6%176 models	19.8%62 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

Gree
Lennox
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	Gree	Lennox
Ducted, up to 1.5 tons	39 · index 45%	31 · index 60%
Ducted, 2 tons	54 · index 47%	35 · index 58%
Ducted, 2.5–3 tons	90 · index 44%	72 · index 55%
Ducted, 3.5–4.5 tons	72 · index 45%	86 · index 57%
Ducted, 5 tons and up	9 · index 46%	13 · index 45%
Non-ducted, up to 1.5 tons	133 · index 46%	66 · index 54%
Non-ducted, 2 tons	35 · index 52%	22 · index 57%
Non-ducted, 2.5–3 tons	54 · index 57%	37 · index 55%
Non-ducted, 3.5–4.5 tons	15 · index 45%	16 · index 57%
Non-ducted, 5 tons and up	6 · index 43%	1 · index 36%

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	GreeCold-climate score, best model	LennoxCold-climate score, best model
Ducted, up to 1.5 tons	70.4(50 is the typical model of its size class)AOX330-09HFN1-MY5Wwith ducted air handler ATIU-09HWFN1-MAlso listed as AOX230-09HFN1-MW5W31 of 39 models qualify · AHRI 207827154	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
Ducted, 2 tons	82.4(50 is the typical model of its size class) (higher)AOD32-24HFN1-MT0Wwith ducted air handler ATIU-24HWFN1-M37 of 55 models qualify · AHRI 207827157	81.1(50 is the typical model of its size class)MPC024S4S-1Pwith ducted air handler MMDB024S4-*PAlso sold as AirEase 4DHP2S24S-1P17 of 34 models qualify · AHRI 211034426
Ducted, 2.5–3 tons	78.5(50 is the typical model of its size class)AOE31U-36HFN1-Mwith ducted air handler AVBL-36HWFN1-MK348 of 89 models qualify · AHRI 213386505	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
Ducted, 3.5–4.5 tons	68.4(50 is the typical model of its size class)GUD60W/A-D(U)with ducted air handler C(A,C,D,E)48C44+TDRAlso sold as Tosot TU60-48WADU25 of 72 models qualify · AHRI 212925904	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
Ducted, 5 tons and up	63.7(50 is the typical model of its size class)TVRF-V60WL/C3 of 9 models qualify · AHRI 214717101	None on this board (0 of 13 models qualify)
Non-ducted, up to 1.5 tons	86.0(50 is the typical model of its size class)AOX230-09HFN1-MW5Wwith ductless indoor unit ASEPB-09HRFN1-MY5W(GA)114 of 133 models qualify · AHRI 207827145	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
Non-ducted, 2 tons	76.1(50 is the typical model of its size class)GWHD(24)ND3MOAlso sold as Ac Pro.Com AWHD(24)ND3MO, Tosot TM24HX4O, Kinghome KM24H5O, Tosot TM24HMO and 1 more; also listed as MULTI24HP230V1EO, WLWHD(24)ND3MO25 of 35 models qualify · AHRI 208786090	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
Non-ducted, 2.5–3 tons	73.7(50 is the typical model of its size class)GWHD(42)ND3MOAlso sold as Ac Pro.Com AWHD(42)ND3MO, Tosot TM42HX4O, Kinghome KM42H5O, Tosot TM42HMO; also listed as MULTI42HP230V1EO, WLWHD(42)ND3MO43 of 54 models qualify · AHRI 208786088	90.9(50 is the typical model of its size class) (higher)A-VMH36QV-1A12 of 37 models qualify · AHRI 214377756
Non-ducted, 3.5–4.5 tons	57.5(50 is the typical model of its size class)GMV-V48WL/C-T(U)Also sold as Tosot TVRF-V48WL/C, Kinghome KUV-48UHO10 of 15 models qualify · AHRI 211698447	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
Non-ducted, 5 tons and up	36.0(50 is the typical model of its size class)GMV-V60WL/C-T(U)Also sold as Tosot TVRF-V60WL/C, Kinghome KUV-60UHO3 of 6 models qualify · AHRI 211694660	None on this board (0 of 1 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	GreeAll-around score, best model	LennoxAll-around score, best model
Ducted, up to 1.5 tons	78.5(50 is the typical model of its size class)AOX430-18HFN1-MT8Wwith ducted air handler ATIU-18HWFN1-M36 of 39 models have all five ratings · AHRI 217284664	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
Ducted, 2 tons	84.9(50 is the typical model of its size class) (higher)AOD32-24HFN1-MT0Wwith ducted air handler ATIU-24HWFN1-M52 of 59 models have all five ratings · AHRI 207827157	84.1(50 is the typical model of its size class)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
Ducted, 2.5–3 tons	75.6(50 is the typical model of its size class)4HP17L36P-**Awith ducted air handler LGM59474 of 85 models have all five ratings · AHRI 211017923	83.7(50 is the typical model of its size class) (higher)A-VMH36QV-1A47 of 69 models have all five ratings · AHRI 214377757
Ducted, 3.5–4.5 tons	76.4(50 is the typical model of its size class)4HP17L48P-**Awith ducted air handler LGM59455 of 71 models have all five ratings · AHRI 211017925	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
Ducted, 5 tons and up	68.9(50 is the typical model of its size class)4HP17L60P-**Awith ducted air handler L(E,G)M60H410 of 10 models have all five ratings · AHRI 212509478	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
Non-ducted, up to 1.5 tons	88.7(50 is the typical model of its size class)GWH09ACD-D3DNA1A/Owith ductless indoor unit GWH09ACD-D3DN***/IAlso sold as Tosot TW09HQ3D6DO, Ac Pro.Com AWH09ACD-D3DNA1A/O, Kinghome KW09HQ3D6DO133 of 133 models have all five ratings · AHRI 10318077	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
Non-ducted, 2 tons	77.5(50 is the typical model of its size class)AOD32-24HFN1-MT0Wwith ductless indoor unit ASEPD-24HRFN1-MU0W35 of 35 models have all five ratings · AHRI 207827148	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
Non-ducted, 2.5–3 tons	78.2(50 is the typical model of its size class)A3OJ-27HFN1-M52 of 54 models have all five ratings · AHRI 217284634	86.4(50 is the typical model of its size class) (higher)A-VMH36QV-1A27 of 37 models have all five ratings · AHRI 214377756
Non-ducted, 3.5–4.5 tons	69.0(50 is the typical model of its size class)GMV-V48WL/C-T(U)Also sold as Tosot TVRF-V48WL/C, Kinghome KUV-48UHO14 of 15 models have all five ratings · AHRI 211698447	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
Non-ducted, 5 tons and up	49.5(50 is the typical model of its size class) (higher)GMV-V60WL/C-T(U)Also sold as Tosot TVRF-V60WL/C, Kinghome KUV-60UHO6 of 6 models have all five ratings · AHRI 211694660	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

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	Gree	Lennox
COP at 5°F	beats 99% · 2.30KW48HVRONon-ducted, 3.5–4.5 tons	beats 100% · 3.194HP18V36PDucted, 2 tons
Capacity retention at 5°F	beats 99% · 144%GWH09ACD-D3DNA1A/OAlso sold as Tosot TW09HQ3D6DO, Ac Pro.Com AWH09ACD-D3DNA1A/O, Kinghome KW09HQ3D6DONon-ducted, up to 1.5 tons	beats 100% · 147%4HP17L18P-**ADucted, up to 1.5 tons
HSPF2	beats 98% · 11.2AOD32-24HFN1-MT0WDucted, 2 tons	beats 99% · 10.3MLB048S4S-1PDucted, 3.5–4.5 tons
SEER2	beats 99% · 24.6A3OJ-27HFN1-MNon-ducted, 2.5–3 tons	beats 100% · 21.8SL25XPV-048-230A**Ducted, 3.5–4.5 tons
EER2	beats 100% · 14.54HP17L24P-**ADucted, 2 tons	beats 100% · 15.0SL25XPV-024-230A**Ducted, 2 tons
Heating capacity at 5°F	beats 99% · 21,800 Btu/hGWHD(18)ND3JOAlso sold as Tosot TM18H5O, Kinghome KM18UH5O; also listed as MULTIU18HP230V1DONon-ducted, up to 1.5 tons	beats 100% · 42,926 Btu/hMLB036S4S-2PNon-ducted, 2.5–3 tons

More comparisons

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Gree vs Lennox heat pumps