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CLASSIC vs Mitsutomo: heat pump ratings compared

Against heat pumps of the same size and type, a typical CLASSIC model beats 41% and a typical Mitsutomo model 58%. Mitsutomo rates higher overall.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated

CLASSIC

41%

of similar heat pumps beaten by its typical model

Below average

40 models listed

Mitsutomo

58%

of similar heat pumps beaten by its typical model

Above average

56 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°FCLASSIC: Beats 37%Mitsutomo: Beats 61%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCLASSIC: Beats 43%Mitsutomo: Beats 58%
  • Winter-long heating efficiencyHSPF2CLASSIC: Beats 37%Mitsutomo: Beats 69%
  • Summer-long cooling efficiencySEER2CLASSIC: Beats 45%Mitsutomo: Beats 57%
  • Hot-day cooling efficiencyEER2CLASSIC: Beats 40%Mitsutomo: Beats 51%

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

    CLASSIC
    65%
    Mitsutomo
    82%

  • Xcel CC

    CLASSIC
    65%
    Mitsutomo
    75%

  • CEE Advanced

    CLASSIC
    3%
    Mitsutomo
    4%

  • ENERGY STAR CC

    CLASSIC
    20%
    Mitsutomo
    77%

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

CLASSIC

  1. 1TMRHC18AS2CLASSIC1.5 tons · 18,000 Btu/h · DuctedKeeps 70% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Good
    44.0score / 100
  2. 2GMRSHC18AS2CLASSIC1.5 tons · 18,000 Btu/h · DuctedKeeps 76% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.86 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.1 (HSPF2)
    Below the middle
    39.3score / 100

Mitsutomo

  1. 1HO-SZ06-LA-Qwith ducted air handler HD-UZ06-LA-QMitsutomo0.5 tons · 6,500 Btu/h · DuctedKeeps 98% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    98% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.41 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    13.8 (HSPF2)
    Top 10%
    93.5score / 100
  2. 2UHO18-NB-LA-Qwith ducted air handler UHMX3-18-AB-LA-QMitsutomo1.5 tons · 18,000 Btu/h · DuctedKeeps 103% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.12 (COP at 5°F)
    Great
    Seasonal efficiency
    10.1 (HSPF2)
    Great
    85.5score / 100
  3. 3HO-SZ18-LA-Qwith ducted air handler S-HD-UZ18-LA-QMitsutomo1.5 tons · 17,500 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
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    11.1 (HSPF2)
    Top 10%
    82.3score / 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.

Open the advanced view