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Kerr vs Rellytech: heat pump ratings compared

Against heat pumps of the same size and type, a typical Kerr model beats 67% and a typical Rellytech model 33%. Kerr rates higher overall.

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

Kerr

67%

of similar heat pumps beaten by its typical model

Well above average

38 models listed

Rellytech

33%

of similar heat pumps beaten by its typical model

Well below average

38 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°FKerr: Beats 59%Rellytech: Beats 36%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FKerr: Beats 77%Rellytech: Beats 31%
  • Winter-long heating efficiencyHSPF2Kerr: Beats 79%Rellytech: Beats 43%
  • Summer-long cooling efficiencySEER2Kerr: Beats 64%Rellytech: Beats 31%
  • Hot-day cooling efficiencyEER2Kerr: Beats 63%Rellytech: Beats 27%

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

    Kerr
    79%
    Rellytech
    63%

  • Xcel CC

    Kerr
    90%
    Rellytech
    50%

  • CEE Advanced

    Kerr
    3%
    Rellytech
    0%

  • ENERGY STAR CC

    Kerr
    90%
    Rellytech
    0%

All-around best, ductless up to 1.5 tons

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

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

Kerr

  1. 1A-KHP06SA-1with ductless indoor unit B-KHP06SA-1Kerr0.5 tons · 6,000 Btu/h · DuctlessCold-climate pick, score 97.0Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    110% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.40 (COP at 5°F)
    Top 10%
    Winter efficiency
    14.8 (HSPF2)
    Top 10%
    Cooling efficiency
    25.5 (SEER2)
    Top 10%
    Hot-day cooling
    18.0 (EER2)
    Top 10%
    96.5score / 100Heating 97 · Cooling 96
  2. 2A-KZP06SA-1with ductless indoor unit B-ZKP06SA-1KerrAlso listed as A-ZKP06SA-10.5 tons · 6,000 Btu/h · DuctlessCold-climate pick, score 87.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    150% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    15.6 (HSPF2)
    Top 10%
    Cooling efficiency
    35.0 (SEER2)
    Top 10%
    Hot-day cooling
    17.4 (EER2)
    Top 10%
    93.6score / 100Heating 88 · Cooling 99
  3. 3A-KZPO9SA-1with ductless indoor unit B-ZKPO9SA-1KerrAlso listed as A-ZKP09SA-11 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 86.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    113% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    14.6 (HSPF2)
    Top 10%
    Cooling efficiency
    33.3 (SEER2)
    Top 10%
    Hot-day cooling
    17.0 (EER2)
    Top 10%
    92.6score / 100Heating 86 · Cooling 99

Rellytech

  1. 1T20230W20E12RellytechAlso listed as T18230W201.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 70.0Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    24.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Good
    73.8score / 100Heating 70 · Cooling 78
  2. 2T20230W20E11Rellytech1.5 tons · 20,000 Btu/h · DuctlessCold-climate pick, score 46.2Meets 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    23.0 (SEER2)
    Good
    Hot-day cooling
    11.2 (EER2)
    Below the middle
    49.3score / 100Heating 46 · Cooling 52
  3. 3A09230W20E11with ductless indoor unit A09230N20E11Rellytech1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 43.9Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.5 (EER2)
    Good
    48.8score / 100Heating 44 · Cooling 54

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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