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AUX vs Gree: heat pump ratings compared

Against heat pumps of the same size and type, a typical AUX model beats 49% and a typical Gree model 54%. Gree rates slightly higher overall.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

AUX

49%

of similar heat pumps beaten by its typical model

About average

189 models listed

Gree

54%

of similar heat pumps beaten by its typical model

About average

724 models listed

Rating by ratingEach bar is the share of same-size, same-type heat pumps that a typical model beats, so the two brands compare fairly even if they make different sizes.
  • Efficiency on a 5°F dayCOP at 5°FAUX: Beats 60%Gree: Beats 43%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAUX: Beats 51%Gree: Beats 57%
  • Winter-long heating efficiencyHSPF2AUX: Beats 40%Gree: Beats 43%
  • Summer-long cooling efficiencySEER2AUX: Beats 48%Gree: Beats 60%
  • Hot-day cooling efficiencyEER2AUX: Beats 39%Gree: Beats 58%

Average (50%)Dashed outline: the other brand, for comparison

Want ranks, distributions per size class and cold-weather curves? Switch to Advanced

Rebate standards

Share of each brand’s models that meet the level. Programs can have other rules too.

  • CEE 2025

    AUX
    68%
    Gree
    81%

  • Xcel CC

    AUX
    66%
    Gree
    80%

  • CEE Advanced

    AUX
    1%
    Gree
    6%

  • ENERGY STAR CC

    AUX
    35%
    Gree
    66%

Top cold-climate picks, ductless up to 1.5 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

AUX

  1. 1AM2-H18/2DR3BAUXAlso listed as ASUM18HPMULO1.5 tons · 18,000 Btu/h · DuctlessKeeps 121% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    121% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    11.0 (HSPF2)
    Great
    83.5score / 100
  2. 2ASW-H18E3B2/*R3DI-D2with ductless indoor unit ASW-H18E3B2/*R3DI-D2AUXAlso listed as ASW-H18E3B2/**R3DI-D21.5 tons · 18,000 Btu/h · DuctlessKeeps 82% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.25 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    80.6score / 100
  3. 3AMAR18HP230V1COwith ductless indoor unit AMAR18HP230V1CHAUX1.5 tons · 18,000 Btu/h · DuctlessKeeps 85% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    85% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.21 (COP at 5°F)
    Great
    Seasonal efficiency
    10.2 (HSPF2)
    Great
    78.6score / 100

Gree

  1. 1MHPC-H-009BSBwith ductless indoor unit MCON-H-009BBBGree (sold as Ac Pro)1 ton · 9,000 Btu/h · DuctlessKeeps 96% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.27 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    13.9 (HSPF2)
    Top 10%
    90.3score / 100
  2. 2GWH09AVDXE-D6DNA1A/Owith ductless indoor unit GWH09AVDXE-D6DN***/IGreeAlso sold as Tosot TW09HAY32A1DO, Kinghome KW09XQ29SDO, Tosot TW09HAY32A1DOC, Tosot TWH09AV29D6DO and 3 more; also listed as SAP09HP230V1R32AO, GWH09AVDXE-D6DNA1B/O, AIRY09HP230V1AO, GS09HP230V1RYO1 ton · 9,100 Btu/h · DuctlessKeeps 108% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    108% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.11 (COP at 5°F)
    Great
    Seasonal efficiency
    11.2 (HSPF2)
    Top 10%
    88.1score / 100
  3. 3MHPC-H-018BSBwith ductless indoor unit MCON-H-016BBBGree (sold as Ac Pro)1.5 tons · 16,000 Btu/h · DuctlessKeeps 77% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    77% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.16 (COP at 5°F)
    Great
    Seasonal efficiency
    13.5 (HSPF2)
    Top 10%
    79.7score / 100

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

Next steps

The advanced view adds ranks, both brands’ models inside every size class, standout models per rating and cold-weather curves.

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