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Fuji vs Kerr Kapstone: heat pump ratings compared

Against heat pumps of the same size and type, a typical Fuji model beats 52% and a typical Kerr Kapstone model 73%. Kerr Kapstone rates higher overall.

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

Fuji

52%

of similar heat pumps beaten by its typical model

About average

12 models listed

Kerr Kapstone

73%

of similar heat pumps beaten by its typical model

Well above average

12 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°FFuji: Beats 54%Kerr Kapstone: Beats 56%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FFuji: Beats 57%Kerr Kapstone: Beats 84%
  • Winter-long heating efficiencyHSPF2Fuji: Beats 55%Kerr Kapstone: Beats 85%
  • Summer-long cooling efficiencySEER2Fuji: Beats 59%Kerr Kapstone: Beats 77%
  • Hot-day cooling efficiencyEER2Fuji: Beats 37%Kerr Kapstone: Beats 70%

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

    Fuji
    75%
    Kerr Kapstone
    92%

  • Xcel CC

    Fuji
    67%
    Kerr Kapstone
    100%

  • CEE Advanced

    Fuji
    0%
    Kerr Kapstone
    0%

  • ENERGY STAR CC

    Fuji
    0%
    Kerr Kapstone
    100%

All-around best, ducted up to 1.5 tons

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

Showing Ducted, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

Fuji

  1. 1FAH18HP230Uwith ducted air handler FAH18HP230NFuji1.5 tons · 18,000 Btu/h · DuctedCold-climate pick, score 49.5Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    8.6 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Good
    Hot-day cooling
    11.3 (EER2)
    Below the middle
    47.2score / 100Heating 50 · Cooling 45

Kerr Kapstone

  1. 1A-KZP15SA-1with ducted air handler B-KZP15SA-1Kerr Kapstone1.5 tons · 15,000 Btu/h · DuctedCold-climate pick, score 75.1Meets 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    11.0 (HSPF2)
    Top 10%
    Cooling efficiency
    27.0 (SEER2)
    Top 10%
    Hot-day cooling
    13.0 (EER2)
    Great
    83.9score / 100Heating 75 · Cooling 93
  2. 2A-KX12P18SA-1with ducted air handler B-KX12P18SA-1Kerr Kapstone1.5 tons · 18,000 Btu/h · DuctedCold-climate pick, score 72.8Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    95% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    9.7 (HSPF2)
    Good
    Cooling efficiency
    19.0 (SEER2)
    Good
    Hot-day cooling
    12.5 (EER2)
    Great
    71.7score / 100Heating 70 · Cooling 73

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