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Gridless vs Proair: heat pump ratings compared

Against heat pumps of the same size and type, a typical Gridless model beats 70% and a typical Proair model 52%. Gridless rates higher overall.

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

Gridless

70%

of similar heat pumps beaten by its typical model

Well above average

15 models listed

Proair

52%

of similar heat pumps beaten by its typical model

About average

30 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°FGridless: Beats 64%Proair: Beats 49%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FGridless: Beats 73%Proair: Beats 55%
  • Winter-long heating efficiencyHSPF2Gridless: Beats 62%Proair: Beats 59%
  • Summer-long cooling efficiencySEER2Gridless: Beats 73%Proair: Beats 55%
  • Hot-day cooling efficiencyEER2Gridless: Beats 73%Proair: Beats 44%

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

    Gridless
    100%
    Proair
    70%

  • Xcel CC

    Gridless
    100%
    Proair
    67%

  • CEE Advanced

    Gridless
    13%
    Proair
    0%

  • ENERGY STAR CC

    Gridless
    100%
    Proair
    0%

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?

Gridless

  1. 1GRID24OM3Gridless2.5 tons · 27,000 Btu/h · DuctlessCold-climate pick, score 50.2Meets 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
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.9 (EER2)
    Great
    64.2score / 100Heating 50 · Cooling 78
  2. 2GRID36OM4Gridless3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 53.7Meets 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
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    12.9 (EER2)
    Great
    61.7score / 100Heating 54 · Cooling 70

Proair

  1. 1PMUL-H5P-36HP-MProair3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 72.6Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    103% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    11.3 (HSPF2)
    Top 10%
    Cooling efficiency
    21.5 (SEER2)
    Good
    Hot-day cooling
    12.2 (EER2)
    Good
    66.3score / 100Heating 70 · Cooling 62
  2. 2PMUL-A5P-36HP-MProair3 tons · 35,000 Btu/h · DuctlessCold-climate pick, score 47.2Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.1 (SEER2)
    Great
    Hot-day cooling
    12.0 (EER2)
    Good
    58.3score / 100Heating 47 · Cooling 69
  3. 3PMUL-H4P-27HP-MProair2.5 tons · 27,000 Btu/h · DuctlessCold-climate pick, score 53.7Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Good
    52.7score / 100Heating 54 · Cooling 52

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