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Acekool vs WINDAIR: heat pump ratings compared

Against heat pumps of the same size and type, a typical Acekool model beats 36% and a typical WINDAIR model 65%. WINDAIR rates higher overall.

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

Acekool

36%

of similar heat pumps beaten by its typical model

Well below average

13 models listed

WINDAIR

65%

of similar heat pumps beaten by its typical model

Well above average

13 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°FAcekool: Beats 21%WINDAIR: Beats 36%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAcekool: Beats 39%WINDAIR: Beats 44%
  • Winter-long heating efficiencyHSPF2Acekool: Beats 32%WINDAIR: Beats 27%
  • Summer-long cooling efficiencySEER2Acekool: Beats 46%WINDAIR: Beats 37%
  • Hot-day cooling efficiencyEER2Acekool: Beats 38%WINDAIR: Beats 50%

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

    Acekool
    85%
    WINDAIR
    23%

  • Xcel CC

    Acekool
    62%
    WINDAIR
    15%

  • CEE Advanced

    Acekool
    0%
    WINDAIR
    0%

  • ENERGY STAR CC

    Acekool
    31%
    WINDAIR
    0%

All-around best, ducted 2.5–3 tons

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

Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

Acekool

No ducted, 2.5–3 tons model from Acekool.

WINDAIR

No ducted, 2.5–3 tons model from WINDAIR.

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