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AUX vs Trane: heat pump ratings compared

Against heat pumps of the same size and type, a typical AUX model beats 49% and a typical Trane model 50%. Trane 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

Trane

50%

of similar heat pumps beaten by its typical model

About average

363 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%Trane: Beats 69%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAUX: Beats 51%Trane: Beats 43%
  • Winter-long heating efficiencyHSPF2AUX: Beats 40%Trane: Beats 35%
  • Summer-long cooling efficiencySEER2AUX: Beats 48%Trane: Beats 40%
  • Hot-day cooling efficiencyEER2AUX: Beats 39%Trane: Beats 67%

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%
    Trane
    39%

  • Xcel CC

    AUX
    66%
    Trane
    26%

  • CEE Advanced

    AUX
    1%
    Trane
    3%

  • ENERGY STAR CC

    AUX
    35%
    Trane
    18%

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

AUX

  1. 1ASUM24HPMULOAUX2 tons · 24,000 Btu/h · DuctedKeeps 83% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    62.9score / 100
  2. 2AHU24HPV1BOwith ducted air handler AHU24HPV1BIAUX2 tons · 24,000 Btu/h · DuctedKeeps 92% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Good
    59.4score / 100
  3. 3ASPR24HPMULOAUX2 tons · 24,000 Btu/h · DuctedKeeps 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
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    9.5 (HSPF2)
    Good
    59.1score / 100

Trane

  1. 15TCV0X36A1with ducted air handler 5TEMCD04AV31+TDRTraneAlso sold as American Standard 5A5V0X36A12 tons · 26,200 Btu/h · DuctedKeeps 107% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    107% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.27 (COP at 5°F)
    Great
    Seasonal efficiency
    10.3 (HSPF2)
    Top 10%
    90.1score / 100
  2. 25A6H7024A1with ducted air handler CM24D3J+TDRTrane (sold as American Standard)2 tons · 21,000 Btu/h · DuctedKeeps 111% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    111% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.87 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    8.1 (HSPF2)
    Below the middle
    77.9score / 100
  3. 35TWR7024A1with ducted air handler CM36B4J+TDRTrane2 tons · 21,600 Btu/h · DuctedKeeps 111% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    111% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.85 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    8.1 (HSPF2)
    Below the middle
    77.9score / 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.

Open the advanced view