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AUX vs Mitsubishi Electric: heat pump ratings compared

Against heat pumps of the same size and type, a typical AUX model beats 52% and a typical Mitsubishi Electric model 60%. Mitsubishi Electric rates 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

Mitsubishi Electric

60%

of similar heat pumps beaten by its typical model

Well above average

156 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%Mitsubishi Electric: Beats 55%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAUX: Beats 51%Mitsubishi Electric: Beats 54%
  • Winter-long heating efficiencyHSPF2AUX: Beats 43%Mitsubishi Electric: Beats 66%
  • Summer-long cooling efficiencySEER2AUX: Beats 51%Mitsubishi Electric: Beats 63%
  • Hot-day cooling efficiencyEER2AUX: Beats 40%Mitsubishi Electric: Beats 60%

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%
    Mitsubishi Electric
    81%

  • Xcel CC

    AUX
    63%
    Mitsubishi Electric
    67%

  • CEE Advanced

    AUX
    1%
    Mitsubishi Electric
    10%

  • ENERGY STAR CC

    AUX
    44%
    Mitsubishi Electric
    66%

All-around best, ductless 2.5–3 tons

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

Showing Ductless, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

AUX

  1. 1AM4-H36/2DR3BAUXAlso listed as ASUM36HPMULO3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 73.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    11.0 (HSPF2)
    Top 10%
    Cooling efficiency
    24.0 (SEER2)
    Top 10%
    Hot-day cooling
    12.5 (EER2)
    Great
    78.3score / 100Heating 73 · Cooling 83
  2. 2AM4-H30/2DR3AAUXAlso listed as ASPR30HPMULO2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 57.4Meets 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.5 (EER2)
    Great
    66.6score / 100Heating 57 · Cooling 76
  3. 3AM4-H36/2DR3AAUXAlso listed as ASPR36HPMULO3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 51.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.3 (EER2)
    Good
    62.6score / 100Heating 51 · Cooling 74

Mitsubishi Electric

  1. 1PUZ-AK30NLHZ2***with ductless indoor unit PLA-AE30NLMitsubishi Electric2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 93.8Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.30 (COP at 5°F)
    Top 10%
    Winter efficiency
    11.0 (HSPF2)
    Top 10%
    Cooling efficiency
    23.8 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Top 10%
    92.8score / 100Heating 94 · Cooling 92
  2. 2PUZ-AK36NLHZ2***with ductless indoor unit PLA-AE36NLMitsubishi Electric3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 84.5Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    23.3 (SEER2)
    Great
    Hot-day cooling
    13.7 (EER2)
    Top 10%
    87.6score / 100Heating 85 · Cooling 91
  3. 3PUZ-AK30NLHZ***with ductless indoor unit PLA-AE30NLMitsubishi Electric2.5 tons · 30,000 Btu/h · DuctlessCold-climate pick, score 78.8Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    94% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.30 (COP at 5°F)
    Top 10%
    Winter efficiency
    10.1 (HSPF2)
    Good
    Cooling efficiency
    23.8 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Top 10%
    85.3score / 100Heating 79 · Cooling 92

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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