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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%

Top cold-climate picks, ductless 3.5–4.5 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 Ductless, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

EXNOS

  1. 1T42230W20E11EXNOS3.5 tons · 42,000 Btu/h · DuctlessKeeps 74% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    74% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.5 (HSPF2)
    Below the middle
    24.6score / 100

Kerr

  1. 1A-KHP486A-1Kerr4 tons · 47,000 Btu/h · DuctlessKeeps 98% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    98% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    11.0 (HSPF2)
    Top 10%
    73.6score / 100
  2. 2A-KHP556A-1Kerr4.5 tons · 52,000 Btu/h · DuctlessKeeps 86% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    86% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.05 (COP at 5°F)
    Good
    Seasonal efficiency
    10.6 (HSPF2)
    Good
    66.4score / 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.

Open the advanced view