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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%

Top cold-climate picks, ductless 5 tons and up

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, 5 tons and up (57,000 Btu/h and up cooling). What size is my system?

Kerr

No ductless, 5 tons and up model from Kerr.

Rellytech

No ductless, 5 tons and up model from Rellytech.

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