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AUX vs Gree heat pumps

Measured against models of the same size and duct type, Gree scores higher on 5 of the 6 ratings. AUX has 189 outdoor models, Gree has 724 outdoor models.

New to heat pump ratings? The Simple view explains them in plain words →

CompareData as of updated · sources

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.
AUX and Gree 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 scores higher on 5 of the 6 ratings.
  • AUX
  • Gree
  • Other ranked manufacturers
AUXGree

Source: AHRI Directory, NEEP · as of

Average peer percentile, raw median and rank among ranked manufacturers
RatingAUXGree
Efficiency index49%median — · 21st ranked54%median — · 15th ranked
COP at 5°F60% (higher)median 2.00 · 7th ranked43% (higher)median 1.94 · 25th ranked
Capacity retention at 5°F51%median 75% · 15th ranked57%median 77% · 9th ranked
HSPF240%median 9.0 · 25th ranked43%median 9.0 · 23rd ranked
SEER248%median 20.0 · 18th ranked60%median 20.5 · 6th ranked
EER239%median 11.0 · 27th ranked58%median 12.0 · 10th ranked
Heating capacity at 5°F49%median 9,600 Btu/h · 17th ranked56%median 17,000 Btu/h · 13th ranked
Outdoor models189724
AHRI certifications2235,379

Share of models meeting each standard

Percent of each manufacturer’s models with a qualifying certification
StandardAUXGree
CEE 2025 Tier 1 (Split ASHP)68.3%129 models81.2%588 models
CEE 2026 Tier 1 (Split ASHP)66.1%125 models80%579 models
CEE Advanced Tier (Split ASHP)1.1%2 models5.5%40 models
Xcel Energy Colorado cold-climate ASHP (2025)65.6%124 models80%579 models
DOE Cold Climate Heat Pump Challenge1.1%2 models5.5%40 models
ENERGY STAR Cold Climate34.9%66 models65.6%475 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 · 8 groups where both have models
  • AUX
  • Gree
  • All models of the group
Ducted, up to 1.5 tons1.901,902 modelsDucted, 2 tons2.001,132 modelsDucted, 2.5–3 tons2.002,029 modelsDucted, 3.5–4.5 tons2.002,290 modelsDucted, 5 tons and up2.00341 modelsNon-ducted, up to 1.5 tons1.943,990 modelsNon-ducted, 2 tons2.00987 modelsNon-ducted, 2.5–3 tons2.001,210 modelsNon-ducted, 3.5–4.5 tons2.00591 modelsNon-ducted, 5 tons and up2.0588 modelsmedian

Raw ratings are only placed side by side within one size and duct type, where they are comparable.

Source: AHRI Directory · as of

Models per peer group · efficiency index within the group
Size and duct typeAUXGree
Ducted, up to 1.5 tons6 · index 60%102 · index 65%
Ducted, 2 tons4 · index 59%68 · index 56%
Ducted, 2.5–3 tons9 · index 63%137 · index 52%
Ducted, 3.5–4.5 tons5 · index 61%116 · index 55%
Ducted, 5 tons and upNone4 · index 60%
Non-ducted, up to 1.5 tons120 · index 46%316 · index 52%
Non-ducted, 2 tons33 · index 52%83 · index 56%
Non-ducted, 2.5–3 tons22 · index 46%81 · index 48%
Non-ducted, 3.5–4.5 tons2 · index 73%49 · index 47%
Non-ducted, 5 tons and upNone3 · index 66%

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 typeAUXCold-climate score, best modelGreeCold-climate score, best model
Ducted, up to 1.5 tons75.4(50 is the typical model of its size class)ASUM18HPMULO6 of 6 models qualify · AHRI 21603243786.0(50 is the typical model of its size class) (higher)SPHP-Z-V018BBwith ducted air handler AIRH-Z-V018V06C91 of 101 models qualify · AHRI 216497962
Ducted, 2 tons62.9(50 is the typical model of its size class)ASUM24HPMULO4 of 4 models qualify · AHRI 21603243877.3(50 is the typical model of its size class) (higher)MHPC-H-024BSBwith ducted air handler MDUC-H-024BBB70 of 85 models qualify · AHRI 216497934
Ducted, 2.5–3 tons73.8(50 is the typical model of its size class)ASPR30HPMULO6 of 9 models qualify · AHRI 21603240077.9(50 is the typical model of its size class) (higher)SPHP-Z-V036BBwith ducted air handler AIRH-Z-V036V12C75 of 121 models qualify · AHRI 216497965
Ducted, 3.5–4.5 tons77.1(50 is the typical model of its size class)ASUM42HPMULO5 of 5 models qualify · AHRI 21603244088.8(50 is the typical model of its size class) (higher)GUD60W2/NHE-D(U)with ducted air handler HND60A/NHA-OAlso sold as Tosot TUH60-48D32E2O; also listed as FXU60HP230V1R32AO, HW60/NHE-D66 of 116 models qualify · AHRI 218043371
Ducted, 5 tons and upNo models in this size class66.7(50 is the typical model of its size class)GMV-V60WL/NHC-T(U)Also sold as Tosot TMV-V60WL/NHC-T(U)2 of 4 models qualify · AHRI 216772305
Non-ducted, up to 1.5 tons83.5(50 is the typical model of its size class)AM2-H18/2DR3BAlso listed as ASUM18HPMULO80 of 120 models qualify · AHRI 21409794090.3(50 is the typical model of its size class) (higher)MHPC-H-009BSBwith ductless indoor unit MCON-H-009BBB298 of 316 models qualify · AHRI 216497938
Non-ducted, 2 tons84.6(50 is the typical model of its size class)AM3-H24/2DR3BAlso listed as ASUM24HPMULO16 of 33 models qualify · AHRI 21409794385.4(50 is the typical model of its size class) (higher)MHPC-H-024BSBwith ductless indoor unit MWAL-H-024BBB68 of 83 models qualify · AHRI 216497919
Non-ducted, 2.5–3 tons73.4(50 is the typical model of its size class)AM4-H36/2DR3BAlso listed as ASUM36HPMULO18 of 22 models qualify · AHRI 21409794177.6(50 is the typical model of its size class) (higher)GWHD(36)ND6MOAlso sold as Tosot TM36H32MO, Kinghome KM36X6O, Tosot MZ-COSMO36/O, Tosot TM36D6MO and 6 more; also listed as MUL36HP230V1R32AO, GS4M36HP230V1MO, GWHD(36)ND6CO74 of 81 models qualify · AHRI 214931589
Non-ducted, 3.5–4.5 tons60.1(50 is the typical model of its size class)ASUM42HPMULO2 of 2 models qualify · AHRI 21605094266.9(50 is the typical model of its size class) (higher)GWHD(42)ND6MOAlso sold as Tosot TM42H32MO, Kinghome KM42X6O, Tosot TM42D6MO, Tosot TMSCI7H4R42 and 5 more; also listed as MUL42HP230V1R32AO, GS5M42HP230V1MO31 of 49 models qualify · AHRI 214931590
Non-ducted, 5 tons and upNo models in this size class53.6(50 is the typical model of its size class)GMV-V60WL/NHC-T(U)Also sold as Tosot TMV-V60WL/NHC-T(U)2 of 3 models qualify · AHRI 216772249

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 typeAUXAll-around score, best modelGreeAll-around score, best model
Ducted, up to 1.5 tons79.8(50 is the typical model of its size class)ASUM18HPMULO6 of 6 models have all five ratings · AHRI 21603243784.2(50 is the typical model of its size class) (higher)TWH09AUC25R32A1DOwith ducted air handler TM09R32SFDI101 of 101 models have all five ratings · AHRI 218214175
Ducted, 2 tons78.2(50 is the typical model of its size class)ASUM24HPMULO4 of 4 models have all five ratings · AHRI 21603243882.7(50 is the typical model of its size class) (higher)A7CP21V24P-**Awith ducted air handler 7AH2AE24PX-72 of 75 models have all five ratings · AHRI 217465953
Ducted, 2.5–3 tons81.4(50 is the typical model of its size class) (higher)ASUM36HPMULO9 of 9 models have all five ratings · AHRI 21603243979.8(50 is the typical model of its size class)A7CP21V36P-**Awith ducted air handler 7AH1AV42PX-130 of 130 models have all five ratings · AHRI 217465906
Ducted, 3.5–4.5 tons87.2(50 is the typical model of its size class) (higher)ASUM42HPMULO5 of 5 models have all five ratings · AHRI 21603244085.3(50 is the typical model of its size class)MHPC-H-048BMB113 of 116 models have all five ratings · AHRI 216497951
Ducted, 5 tons and upNo models in this size class67.3(50 is the typical model of its size class)BH714S60P-**Awith ducted air handler BAH7V60PT-5 of 5 models have all five ratings · AHRI 216371303
Non-ducted, up to 1.5 tons84.2(50 is the typical model of its size class)ASW-H18E3B2/*R3DI-D2with ductless indoor unit ASW-H18E3B2/*R3DI-D2Also listed as ASW-H18E3B2/**R3DI-D2102 of 120 models have all five ratings · AHRI 21521892893.2(50 is the typical model of its size class) (higher)MHPC-H-009BSBwith ductless indoor unit MCON-H-009BBB316 of 316 models have all five ratings · AHRI 216497938
Non-ducted, 2 tons87.0(50 is the typical model of its size class)ASW-H24F6A2/ *R3DI-D7with ductless indoor unit ASW-H24F6A2/ *R3DI-D7Also listed as ASW-H24F6A2/**R3DI-D729 of 33 models have all five ratings · AHRI 21711527487.6(50 is the typical model of its size class) (higher)MHPC-H-024BSBwith ductless indoor unit MWAL-H-024BBB79 of 83 models have all five ratings · AHRI 216497919
Non-ducted, 2.5–3 tons78.5(50 is the typical model of its size class) (higher)AM4-H36/2DR3BAlso listed as ASUM36HPMULO18 of 22 models have all five ratings · AHRI 21409794175.5(50 is the typical model of its size class)GMV-V36WL/NHC-T(U)Also sold as Tosot TMV-V36WL/NHC-T(U)81 of 81 models have all five ratings · AHRI 217123443
Non-ducted, 3.5–4.5 tons74.4(50 is the typical model of its size class) (higher)ASUM42HPMULO2 of 2 models have all five ratings · AHRI 21605094268.7(50 is the typical model of its size class)MHPC-H-048BMB48 of 49 models have all five ratings · AHRI 216497952
Non-ducted, 5 tons and upNo models in this size class69.3(50 is the typical model of its size class)GMV-V60WL/NHC-T(U)Also sold as Tosot TMV-V60WL/NHC-T(U)3 of 3 models have all five ratings · AHRI 216772249

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
RatingAUXGree
COP at 5°Fbeats 100% · 2.52AFEB09HP115V1CONon-ducted, up to 1.5 tonsbeats 99% · 2.51MHPC-H-012BSBNon-ducted, up to 1.5 tons
Capacity retention at 5°Fbeats 99% · 108%AM3-H24/2DR3BAlso listed as ASUM24HPMULONon-ducted, 2 tonsbeats 99% · 103%SPHP-X-I060BDucted, 3.5–4.5 tons
HSPF2beats 96% · 11.0AM4-H36/2DR3BAlso listed as ASUM36HPMULONon-ducted, 2.5–3 tonsbeats 98% · 13.9MHPC-H-009BSBNon-ducted, up to 1.5 tons
SEER2beats 100% · 22.0ASUM42HPMULODucted, 3.5–4.5 tonsbeats 100% · 24.5GWH18AVEXF-D6DNA1A/OAlso sold as Kinghome KW18XQ29SDO, Tosot TW18HAY32A1DO, Tosot TW18HAY32A1DOC, Tosot TWH18AD32AO and 1 more; also listed as GWH18AVEXF-D6DNA1B/ODucted, up to 1.5 tons
EER2beats 97% · 14.0AMAR24HP230V1CONon-ducted, 2 tonsbeats 100% · 14.5BH714S18P-**ADucted, up to 1.5 tons
Heating capacity at 5°Fbeats 99% · 21,800 Btu/hAM2-H18/2DR3BAlso listed as ASUM18HPMULONon-ducted, up to 1.5 tonsbeats 98% · 19,600 Btu/hGS18HP230V1CLODucted, up to 1.5 tons

In the cold

NEEP cold-climate listings of both manufacturers against all listed models.
AUX vs Gree: capacity and COP from 47°F downNEEP cold-climate listings at maximum capacity · 6,130 models (45.8% of the catalog) have ratings at 47, 17 and 5°F
  • All listed models (median, middle 50% and 80%)
  • AUX (median, middle 50%)
  • Gree (median, middle 50%)
Heating capacity, % of its 47°F maximum70%70%COP at maximum capacity2.001.95

One curve per model: its NEEP-rated certification with the best 5°F COP. Every point of a curve is over the same models. NEEP lists only models submitted to it, so this is a cold-climate-leaning subset, not the whole catalog.
Show the data as a table
All listed models: capacity, % of its 47°F maximum
Scope, temperatureModels10th pct.25thMedian75th90th
All rated models, 47°F6,130100%100%100%100%100%
All rated models, 17°F6,13064%69%74%83%91%
All rated models, 5°F6,13057%61%69%77%83%
All listed models: COP at maximum capacity
Scope, temperatureModels10th pct.25thMedian75th90th
All rated models, 47°F6,1302.83.013.243.483.66
All rated models, 17°F6,13022.142.32.422.61
All rated models, 5°F6,1301.81.8722.12.24
AUX: capacity, % of its 47°F maximum
Scope, temperatureModels10th pct.25thMedian75th90th
AUX, 47°F65100%100%100%100%100%
AUX, 17°F6567%70%73%79%85%
AUX, 5°F6562%65%70%73%83%
AUX: COP at maximum capacity
Scope, temperatureModels10th pct.25thMedian75th90th
AUX, 47°F652.933.183.33.523.72
AUX, 17°F652.12.172.282.342.45
AUX, 5°F651.89222.12.18
Gree: capacity, % of its 47°F maximum
Scope, temperatureModels10th pct.25thMedian75th90th
Gree, 47°F538100%100%100%100%100%
Gree, 17°F53868%73%79%87%95%
Gree, 5°F53858%63%70%76%89%
Gree: COP at maximum capacity
Scope, temperatureModels10th pct.25thMedian75th90th
Gree, 47°F5382.873.173.283.423.61
Gree, 17°F5381.982.082.252.42.54
Gree, 5°F5381.81.821.952.052.14

Source: NEEP ccASHP list · as of

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