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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 5 tons and up

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

Showing Ductless, 5 tons and up (57,000 Btu/h and up cooling). What size is my system?

AUX

No ductless, 5 tons and up model from AUX.

Mitsubishi Electric

  1. 1MXZ-SM60NLHZ-**Mitsubishi ElectricAlso listed as PUMY-HL60NKMU5 tons · 60,000 Btu/h · DuctlessCold-climate pick, score 70.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.9 (HSPF2)
    Top 10%
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Great
    68.7score / 100Heating 70 · Cooling 67
  2. 2MXZ-SM60NLHZ***Mitsubishi Electric5 tons · 60,000 Btu/h · DuctlessCold-climate pick, score 69.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    94% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.9 (HSPF2)
    Top 10%
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Great
    68.4score / 100Heating 69 · Cooling 67
  3. 3MXZ-SM60NL***Mitsubishi ElectricAlso listed as PUMY-L60NKMU, MXZ-SM60NL-5 tons · 60,000 Btu/h · DuctlessCold-climate pick, score 62.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Great
    64.7score / 100Heating 62 · Cooling 67

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