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Ecoer vs EMI: heat pump ratings compared

Against heat pumps of the same size and type, a typical Ecoer model beats 54% and a typical EMI model 62%. EMI rates higher overall.

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

Ecoer

54%

of similar heat pumps beaten by its typical model

About average

15 models listed

EMI

62%

of similar heat pumps beaten by its typical model

Well above average

15 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°FEcoer: Beats 46%EMI: Beats 56%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FEcoer: Beats 65%EMI: Beats 63%
  • Winter-long heating efficiencyHSPF2Ecoer: Beats 68%EMI: Beats 69%
  • Summer-long cooling efficiencySEER2Ecoer: Beats 60%EMI: Beats 61%
  • Hot-day cooling efficiencyEER2Ecoer: Beats 37%EMI: Beats 60%

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

    Ecoer
    93%
    EMI
    87%

  • Xcel CC

    Ecoer
    93%
    EMI
    73%

  • CEE Advanced

    Ecoer
    0%
    EMI
    7%

  • ENERGY STAR CC

    Ecoer
    100%
    EMI
    73%

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?

Ecoer

No ducted, 5 tons and up model from Ecoer.

EMI

No ducted, 5 tons and up model from EMI.

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