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COMFORTSTAR vs Fujitsu: heat pump ratings compared

Against heat pumps of the same size and type, a typical COMFORTSTAR model beats 50% and a typical Fujitsu model 53%. Fujitsu rates slightly higher overall.

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

COMFORTSTAR

50%

of similar heat pumps beaten by its typical model

About average

133 models listed

Fujitsu

53%

of similar heat pumps beaten by its typical model

About average

179 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°FCOMFORTSTAR: Beats 51%Fujitsu: Beats 60%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCOMFORTSTAR: Beats 48%Fujitsu: Beats 48%
  • Winter-long heating efficiencyHSPF2COMFORTSTAR: Beats 54%Fujitsu: Beats 44%
  • Summer-long cooling efficiencySEER2COMFORTSTAR: Beats 49%Fujitsu: Beats 43%
  • Hot-day cooling efficiencyEER2COMFORTSTAR: Beats 44%Fujitsu: Beats 47%

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

    COMFORTSTAR
    53%
    Fujitsu
    32%

  • Xcel CC

    COMFORTSTAR
    47%
    Fujitsu
    30%

  • CEE Advanced

    COMFORTSTAR
    2%
    Fujitsu
    8%

  • ENERGY STAR CC

    COMFORTSTAR
    30%
    Fujitsu
    27%

Top cold-climate picks, ducted 2.5–3 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, 2.5–3 tons (27,000–38,999 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

COMFORTSTAR

  1. 1CHF3-36DU(O)with ducted air handler CPA3H-36DU(I)COMFORTSTAR3 tons · 36,000 Btu/h · DuctedKeeps 90% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Seasonal efficiency
    11.1 (HSPF2)
    Top 10%
    83.2score / 100
  2. 2CVH3-36-5SHCOMFORTSTAR3 tons · 36,000 Btu/h · DuctedKeeps 106% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    106% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.4 (HSPF2)
    Top 10%
    82.5score / 100
  3. 3CPH3-30CD(O)with ducted air handler CWM3-30-SG3COMFORTSTAR2.5 tons · 30,000 Btu/h · DuctedKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.2 (HSPF2)
    Great
    78.4score / 100

Fujitsu

  1. 1AOUH30KUAH1with ducted air handler AMUH30KUASFujitsu2.5 tons · 30,000 Btu/h · DuctedKeeps 106% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    106% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    87.0score / 100
  2. 2AOUH30KUAS1with ducted air handler AMUH30KUASFujitsu2.5 tons · 30,000 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
    2.18 (COP at 5°F)
    Great
    Seasonal efficiency
    10.0 (HSPF2)
    Great
    82.2score / 100
  3. 3AOUH36KUAS1with ducted air handler AMUH36KUASFujitsu3 tons · 36,000 Btu/h · DuctedKeeps 84% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    84% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.18 (COP at 5°F)
    Great
    Seasonal efficiency
    9.8 (HSPF2)
    Great
    78.3score / 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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