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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, ductless 2.5–3 tons

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

Showing Ductless, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Ecoer

No ductless, 2.5–3 tons model from Ecoer.

EMI

  1. 1EMXMZ436DAEMI3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 78.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.7 (HSPF2)
    Great
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    13.0 (EER2)
    Great
    78.3score / 100Heating 76 · Cooling 81
  2. 2EMXMZ327DAEMI2.5 tons · 27,000 Btu/h · DuctlessCold-climate pick, score 72.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.5 (EER2)
    Great
    74.4score / 100Heating 73 · Cooling 76
  3. 3ECOSZ130DAwith ductless indoor unit ECOWAL30DAEMI2.5 tons · 30,000 Btu/h · DuctlessNot a cold-climate pick: keeps 65% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    66% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.88 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.2 (HSPF2)
    Below the middle
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    11.0 (EER2)
    Below the middle
    24.2score / 100Heating 19 · Cooling 30

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