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AUX vs Carrier: heat pump ratings compared

Against heat pumps of the same size and type, a typical AUX model beats 52% and a typical Carrier model 48%. AUX rates slightly higher overall.

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

AUX

52%

of similar heat pumps beaten by its typical model

About average

149 models listed

Carrier

48%

of similar heat pumps beaten by its typical model

About average

816 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 62%Carrier: Beats 56%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAUX: Beats 51%Carrier: Beats 34%
  • Winter-long heating efficiencyHSPF2AUX: Beats 43%Carrier: Beats 40%
  • Summer-long cooling efficiencySEER2AUX: Beats 51%Carrier: Beats 42%
  • Hot-day cooling efficiencyEER2AUX: Beats 40%Carrier: Beats 59%

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%
    Carrier
    40%

  • Xcel CC

    AUX
    63%
    Carrier
    27%

  • CEE Advanced

    AUX
    1%
    Carrier
    1%

  • ENERGY STAR CC

    AUX
    44%
    Carrier
    27%

Top cold-climate picks, ductless 2 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, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

AUX

  1. 1AM3-H24/2DR3BAUXAlso listed as ASUM24HPMULO2 tons · 24,000 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
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    84.4score / 100
  2. 2ASW-H24F6A2/ *R3DI-D7with ductless indoor unit ASW-H24F6A2/ *R3DI-D7AUXAlso listed as ASW-H24F6A2/**R3DI-D72 tons · 22,400 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)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    77.4score / 100
  3. 3AFEB24HP230V1COwith ductless indoor unit AFEB24HP230V1CHAUXAlso listed as ASW-H24F8A2/*R3DI-C7, ASW-H24F8A2/**R3DI-C72 tons · 23,000 Btu/h · DuctlessKeeps 87% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    87% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.20 (COP at 5°F)
    Great
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    77.2score / 100

Carrier

  1. 137MAHAQ24AA3with ductless indoor unit 45MBCAQ24XA3CarrierAlso sold as Arcoaire D5CSHAH24AAK2 tons · 23,400 Btu/h · DuctlessKeeps 95% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    95% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.23 (COP at 5°F)
    Great
    Seasonal efficiency
    11.6 (HSPF2)
    Top 10%
    89.4score / 100
  2. 237MARAQ24AA3with ductless indoor unit 45MAHAQ24XA3CarrierAlso sold as Arcoaire D5CSRAH24AAK2 tons · 24,000 Btu/h · DuctlessKeeps 78% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.54 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    11.7 (HSPF2)
    Top 10%
    84.5score / 100
  3. 3RAV-BP241AT2P-ULwith ductless indoor unit RAV-HB241CTP-ULCarrier (sold as Toshiba Carrier)2 tons · 24,000 Btu/h · DuctlessKeeps 80% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.20 (COP at 5°F)
    Great
    Seasonal efficiency
    11.0 (HSPF2)
    Great
    79.8score / 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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