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DAIZUKI vs Kerr Kapstone: heat pump ratings compared

Against heat pumps of the same size and type, a typical DAIZUKI model beats 47% 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

DAIZUKI

47%

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°FDAIZUKI: Beats 39%Kerr Kapstone: Beats 56%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDAIZUKI: Beats 41%Kerr Kapstone: Beats 84%
  • Winter-long heating efficiencyHSPF2DAIZUKI: Beats 47%Kerr Kapstone: Beats 85%
  • Summer-long cooling efficiencySEER2DAIZUKI: Beats 61%Kerr Kapstone: Beats 77%
  • Hot-day cooling efficiencyEER2DAIZUKI: Beats 44%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

    DAIZUKI
    92%
    Kerr Kapstone
    92%

  • Xcel CC

    DAIZUKI
    75%
    Kerr Kapstone
    100%

  • CEE Advanced

    DAIZUKI
    0%
    Kerr Kapstone
    0%

  • ENERGY STAR CC

    DAIZUKI
    0%
    Kerr Kapstone
    100%

All-around best, ductless 3.5–4.5 tons

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

Showing Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

DAIZUKI

  1. 1DXFMT-4224-5ZDAIZUKI3.5 tons · 42,000 Btu/h · DuctlessCold-climate pick, score 32.0Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Below the middle
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    11.2 (EER2)
    Below the middle
    42.9score / 100Heating 32 · Cooling 54

Kerr Kapstone

No ductless, 3.5–4.5 tons model from Kerr Kapstone.

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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