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iFFALCON vs KeplerX: heat pump ratings compared

Against heat pumps of the same size and type, a typical iFFALCON model beats 49% and a typical KeplerX model 42%. iFFALCON rates higher overall.

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

iFFALCON

49%

of similar heat pumps beaten by its typical model

About average

20 models listed

KeplerX

42%

of similar heat pumps beaten by its typical model

Below average

20 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°FiFFALCON: Beats 28%KeplerX: Beats 34%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FiFFALCON: Beats 51%KeplerX: Beats 41%
  • Winter-long heating efficiencyHSPF2iFFALCON: Beats 54%KeplerX: Beats 52%
  • Summer-long cooling efficiencySEER2iFFALCON: Beats 58%KeplerX: Beats 58%
  • Hot-day cooling efficiencyEER2iFFALCON: Beats 37%KeplerX: Beats 26%

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

    iFFALCON
    70%
    KeplerX
    35%

  • Xcel CC

    iFFALCON
    75%
    KeplerX
    25%

  • CEE Advanced

    iFFALCON
    0%
    KeplerX
    0%

  • ENERGY STAR CC

    iFFALCON
    75%
    KeplerX
    0%

All-around best, ducted 5 tons and up

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

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

iFFALCON

No ducted, 5 tons and up model from iFFALCON.

KeplerX

No ducted, 5 tons and up model from KeplerX.

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