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Airdach vs EMI: heat pump ratings compared

Against heat pumps of the same size and type, a typical Airdach model beats 40% 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

Airdach

40%

of similar heat pumps beaten by its typical model

Below average

29 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°FAirdach: Beats 48%EMI: Beats 56%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAirdach: Beats 34%EMI: Beats 63%
  • Winter-long heating efficiencyHSPF2Airdach: Beats 28%EMI: Beats 69%
  • Summer-long cooling efficiencySEER2Airdach: Beats 29%EMI: Beats 61%
  • Hot-day cooling efficiencyEER2Airdach: Beats 49%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

    Airdach
    24%
    EMI
    87%

  • Xcel CC

    Airdach
    31%
    EMI
    73%

  • CEE Advanced

    Airdach
    0%
    EMI
    7%

  • ENERGY STAR CC

    Airdach
    0%
    EMI
    73%

All-around best, ductless up to 1.5 tons

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

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

Airdach

  1. 1ACSH0920VR1-D3with ductless indoor unit AIWH0900VR1-D3Airdach1 ton · 9,100 Btu/h · DuctlessCold-climate pick, score 41.6Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.94 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.8 (HSPF2)
    Below the middle
    Cooling efficiency
    20.5 (SEER2)
    Below the middle
    Hot-day cooling
    12.5 (EER2)
    Good
    44.9score / 100Heating 42 · Cooling 48
  2. 2ACSH0920VR1-A3with ductless indoor unit AIWH0900VR1-A3Airdach1 ton · 9,100 Btu/h · DuctlessCold-climate pick, score 37.3Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.86 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.8 (HSPF2)
    Below the middle
    Cooling efficiency
    20.5 (SEER2)
    Below the middle
    Hot-day cooling
    11.9 (EER2)
    Below the middle
    37.9score / 100Heating 37 · Cooling 39
  3. 3ACSH1820VR1-D3with ductless indoor unit AIWH1800VR1-D3Airdach1.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 25.4Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.5 (HSPF2)
    Below the middle
    Cooling efficiency
    20.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Below the middle
    31.4score / 100Heating 25 · Cooling 37

EMI

  1. 1EMXSZ106DAwith ductless indoor unit EMXWAL06DAEMI0.5 tons · 6,000 Btu/h · DuctlessCold-climate pick, score 96.7Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    110% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.40 (COP at 5°F)
    Top 10%
    Winter efficiency
    14.8 (HSPF2)
    Top 10%
    Cooling efficiency
    25.5 (SEER2)
    Top 10%
    Hot-day cooling
    18.0 (EER2)
    Top 10%
    96.2score / 100Heating 97 · Cooling 96
  2. 2EMXMZ218DAEMI1.5 tons · 19,000 Btu/h · DuctlessCold-climate pick, score 73.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    95% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.4 (HSPF2)
    Great
    Cooling efficiency
    25.0 (SEER2)
    Great
    Hot-day cooling
    15.0 (EER2)
    Top 10%
    81.9score / 100Heating 73 · Cooling 91
  3. 3EMXSZ109DAwith ductless indoor unit EMXWAL09DAEMI1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 65.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    12.5 (HSPF2)
    Top 10%
    Cooling efficiency
    27.4 (SEER2)
    Top 10%
    Hot-day cooling
    15.4 (EER2)
    Top 10%
    80.6score / 100Heating 65 · Cooling 96

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.

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