Skip to content
Rebate.Blue

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%

All-around best, ductless up to 1.5 tons

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

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

AUX

  1. 1ASW-H18E3B2/*R3DI-D2with ductless indoor unit ASW-H18E3B2/*R3DI-D2AUXAlso listed as ASW-H18E3B2/**R3DI-D21.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 80.6Meets 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%
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    25.0 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Great
    84.2score / 100Heating 81 · Cooling 88
  2. 2AMAR18HP230V1COwith ductless indoor unit AMAR18HP230V1CHAUX1.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 78.6Meets 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
    Winter efficiency
    10.2 (HSPF2)
    Great
    Cooling efficiency
    25.0 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Great
    83.2score / 100Heating 79 · Cooling 88
  3. 3AMAR09HP115V1COwith ductless indoor unit AMAR09HP115V1CHAUX1 ton · 9,200 Btu/h · DuctlessCold-climate pick, score 69.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    94% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.91 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    25.0 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Great
    78.9score / 100Heating 70 · Cooling 88

Trane

  1. 1M5THM2318A12NA*Trane (sold as RunTru)1.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 70.0Meets 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    24.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Good
    73.8score / 100Heating 70 · Cooling 78
  2. 2M5THS2312A11NAAwith ductless indoor unit M5MHWUN12A1N0AATrane (sold as RunTru)Also listed as M5THS2312A11NA1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 61.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    24.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Good
    69.4score / 100Heating 61 · Cooling 78
  3. 3M3THS2209A91NAwith ductless indoor unit M3MHW2209A9N0ATrane (sold as RunTru)1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 35.2Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.75 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    23.5 (SEER2)
    Great
    Hot-day cooling
    13.5 (EER2)
    Great
    57.4score / 100Heating 35 · Cooling 80

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