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ACIQ vs Mitsubishi Electric: heat pump ratings compared

Against heat pumps of the same size and type, a typical ACIQ model beats 47% and a typical Mitsubishi Electric model 65%. Mitsubishi Electric rates higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

ACIQ

47%

of similar heat pumps beaten by its typical model

About average

161 models listed

Mitsubishi Electric

65%

of similar heat pumps beaten by its typical model

Well above average

373 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°FACIQ: Beats 48%Mitsubishi Electric: Beats 67%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FACIQ: Beats 43%Mitsubishi Electric: Beats 55%
  • Winter-long heating efficiencyHSPF2ACIQ: Beats 44%Mitsubishi Electric: Beats 72%
  • Summer-long cooling efficiencySEER2ACIQ: Beats 45%Mitsubishi Electric: Beats 63%
  • Hot-day cooling efficiencyEER2ACIQ: Beats 50%Mitsubishi Electric: Beats 65%

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

    ACIQ
    41%
    Mitsubishi Electric
    68%

  • Xcel CC

    ACIQ
    32%
    Mitsubishi Electric
    54%

  • CEE Advanced

    ACIQ
    1%
    Mitsubishi Electric
    6%

  • ENERGY STAR CC

    ACIQ
    19%
    Mitsubishi Electric
    37%

Top cold-climate picks, ductless up to 1.5 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, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

ACIQ

  1. 1ACIQ-06ZPL-HP230Bwith ductless indoor unit ACIQ-06W-HH-MCACIQ0.5 tons · 6,000 Btu/h · DuctlessKeeps 107% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    107% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.09 (COP at 5°F)
    Great
    Seasonal efficiency
    13.6 (HSPF2)
    Top 10%
    89.3score / 100
  2. 2SC-09ZPL-HP230with ductless indoor unit SC-09WPL-HP230ACIQ1 ton · 9,000 Btu/h · DuctlessKeeps 144% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    144% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.91 (COP at 5°F)
    Good
    Seasonal efficiency
    11.0 (HSPF2)
    Great
    80.1score / 100
  3. 3ACIQ-12ZPL-HP230Bwith ductless indoor unit ACIQ-12FM-HH-MCACIQ1 ton · 12,000 Btu/h · DuctlessKeeps 99% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    99% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.99 (COP at 5°F)
    Good
    Seasonal efficiency
    10.7 (HSPF2)
    Great
    77.0score / 100

Mitsubishi Electric

  1. 1NAXSPH06B112A*with ductless indoor unit NAXWPH06B112AAMitsubishi Electric (sold as American Standard / Mitsubishi Electric)0.5 tons · 6,000 Btu/h · DuctlessKeeps 121% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    121% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.46 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    11.9 (HSPF2)
    Top 10%
    97.3score / 100
  2. 2MUZ-FS06NA***with ductless indoor unit MSZ-FS06NAMitsubishi ElectricAlso sold as Trane / Mitsubishi Electric NTXSPH06B112A0.5 tons · 6,000 Btu/h · DuctlessKeeps 121% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    121% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.46 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    11.9 (HSPF2)
    Top 10%
    97.3score / 100
  3. 3NAXSPB06B112A*with ductless indoor unit NAXWPH06B112AAMitsubishi Electric (sold as American Standard / Mitsubishi Electric)0.5 tons · 6,000 Btu/h · DuctlessKeeps 121% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    121% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.46 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    10.9 (HSPF2)
    Great
    94.3score / 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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