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ADP vs EMI: heat pump ratings compared

Against heat pumps of the same size and type, a typical ADP model beats 52% and a typical EMI model 58%. EMI rates higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

ADP

52%

of similar heat pumps beaten by its typical model

About average

41 models listed

EMI

58%

of similar heat pumps beaten by its typical model

Above average

22 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°FADP: Beats 46%EMI: Beats 49%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FADP: Beats 73%EMI: Beats 67%
  • Winter-long heating efficiencyHSPF2ADP: Beats 64%EMI: Beats 68%
  • Summer-long cooling efficiencySEER2ADP: Beats 57%EMI: Beats 57%
  • Hot-day cooling efficiencyEER2ADP: Beats 30%EMI: Beats 48%

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

    ADP
    54%
    EMI
    68%

  • Xcel CC

    ADP
    73%
    EMI
    64%

  • CEE Advanced

    ADP
    2%
    EMI
    0%

  • ENERGY STAR CC

    ADP
    0%
    EMI
    73%

Top cold-climate picks, ductless up to 1.5 tons

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

ADP

No ductless, up to 1.5 tons model from ADP.

EMI

  1. 1MHSZ106DAwith ductless indoor unit MHWAL06DAEMI0.5 tons · 6,000 Btu/h · DuctlessKeeps 107% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    107% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.09 (COP at 5°F)
    Great
    Seasonal efficiency
    13.6 (HSPF2)
    Top 10%
    89.3score / 100
  2. 2MHSZ109DAwith ductless indoor unit MHWAL09DAEMI1 ton · 9,000 Btu/h · DuctlessKeeps 88% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    88% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.97 (COP at 5°F)
    Good
    Seasonal efficiency
    11.5 (HSPF2)
    Top 10%
    76.2score / 100
  3. 3MHSZ118DAwith ductless indoor unit MHWAL18DAEMI1.5 tons · 18,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets 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
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    11.3 (HSPF2)
    Top 10%
    67.2score / 100

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