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EXNOS vs Kerr: heat pump ratings compared

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

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

EXNOS

33%

of similar heat pumps beaten by its typical model

Well below average

38 models listed

Kerr

67%

of similar heat pumps beaten by its typical model

Well above 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°FEXNOS: Beats 36%Kerr: Beats 59%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FEXNOS: Beats 31%Kerr: Beats 77%
  • Winter-long heating efficiencyHSPF2EXNOS: Beats 43%Kerr: Beats 79%
  • Summer-long cooling efficiencySEER2EXNOS: Beats 31%Kerr: Beats 64%
  • Hot-day cooling efficiencyEER2EXNOS: Beats 27%Kerr: Beats 63%

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

    EXNOS
    63%
    Kerr
    79%

  • Xcel CC

    EXNOS
    50%
    Kerr
    90%

  • CEE Advanced

    EXNOS
    0%
    Kerr
    3%

  • ENERGY STAR CC

    EXNOS
    0%
    Kerr
    90%

All-around best, ductless 2 tons

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

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

EXNOS

  1. 1A24230W20E12with ductless indoor unit A24230N20E12EXNOSAlso listed as A24230W208222 tons · 24,000 Btu/h · DuctlessNot a cold-climate pick: keeps 65% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    65% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    21.0 (SEER2)
    Good
    Hot-day cooling
    10.5 (EER2)
    Below the middle
    41.0score / 100Heating 45 · Cooling 37
  2. 2A24230W20E11with ductless indoor unit A24230N20E11EXNOS2 tons · 24,000 Btu/h · DuctlessNot a cold-climate pick: keeps 66% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    67% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    10.5 (EER2)
    Below the middle
    29.3score / 100Heating 29 · Cooling 30
  3. 3A24230W17E11with ductless indoor unit A24230N17E11EXNOSAlso listed as A24230W178212 tons · 23,000 Btu/h · DuctlessNot a cold-climate pick: keeps 53% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    54% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    9.5 (EER2)
    Below the middle
    14.3score / 100Heating 23 · Cooling 6

Kerr

  1. 1A-KHP24SA-1with ductless indoor unit B-KHP24SA-1KerrAlso listed as A-ZKP24SA-12 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 90.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.34 (COP at 5°F)
    Top 10%
    Winter efficiency
    13.5 (HSPF2)
    Top 10%
    Cooling efficiency
    21.0 (SEER2)
    Good
    Hot-day cooling
    13.0 (EER2)
    Great
    78.0score / 100Heating 90 · Cooling 67
  2. 2A-KSP24SA-1with ductless indoor unit B-KSP24SA-1Kerr2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 39.9Meets Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.01 (COP at 5°F)
    Good
    Winter efficiency
    8.5 (HSPF2)
    Below the middle
    Cooling efficiency
    17.0 (SEER2)
    Below the middle
    Hot-day cooling
    9.0 (EER2)
    Below the middle
    21.5score / 100Heating 40 · Cooling 3

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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