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ENVIAIR vs Everwell: heat pump ratings compared

Against heat pumps of the same size and type, a typical ENVIAIR model beats 53% and a typical Everwell model 27%. ENVIAIR rates higher overall.

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

ENVIAIR

53%

of similar heat pumps beaten by its typical model

About average

14 models listed

Everwell

27%

of similar heat pumps beaten by its typical model

Well below average

14 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°FENVIAIR: Beats 44%Everwell: Beats 37%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FENVIAIR: Beats 60%Everwell: Beats 20%
  • Winter-long heating efficiencyHSPF2ENVIAIR: Beats 42%Everwell: Beats 28%
  • Summer-long cooling efficiencySEER2ENVIAIR: Beats 57%Everwell: Beats 26%
  • Hot-day cooling efficiencyEER2ENVIAIR: Beats 57%Everwell: Beats 30%

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

    ENVIAIR
    86%
    Everwell
    14%

  • Xcel CC

    ENVIAIR
    86%
    Everwell
    14%

  • CEE Advanced

    ENVIAIR
    14%
    Everwell
    0%

  • ENERGY STAR CC

    ENVIAIR
    0%
    Everwell
    0%

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?

ENVIAIR

  1. 1EMSO30S9AY230Awith ductless indoor unit EMSI30S9AY230AENVIAIR1 ton · 9,100 Btu/h · DuctlessKeeps 108% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP
    Heat kept at 5°F
    108% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.11 (COP at 5°F)
    Great
    Seasonal efficiency
    11.2 (HSPF2)
    Great
    87.2score / 100
  2. 2EMSO28S12AY230Awith ductless indoor unit EMSI28S12AY230AENVIAIR1 ton · 12,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel 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
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    72.1score / 100
  3. 3EMSO28S18AY230Awith ductless indoor unit EMSI28S18AY230AENVIAIR1.5 tons · 18,000 Btu/h · DuctlessKeeps 97% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    97% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    55.4score / 100

Everwell

None of Everwell’s ductless, up to 1.5 tons models qualifies.

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