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Acekool vs ATK: heat pump ratings compared

Against heat pumps of the same size and type, a typical Acekool model beats 36% and a typical ATK model 47%. ATK 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

ATK

47%

of similar heat pumps beaten by its typical model

About 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%ATK: Beats 51%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FAcekool: Beats 39%ATK: Beats 57%
  • Winter-long heating efficiencyHSPF2Acekool: Beats 32%ATK: Beats 75%
  • Summer-long cooling efficiencySEER2Acekool: Beats 46%ATK: Beats 44%
  • Hot-day cooling efficiencyEER2Acekool: Beats 38%ATK: Beats 20%

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%
    ATK
    54%

  • Xcel CC

    Acekool
    62%
    ATK
    46%

  • CEE Advanced

    Acekool
    0%
    ATK
    0%

  • ENERGY STAR CC

    Acekool
    31%
    ATK
    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.

ATK

  1. 1ACI-AUO36SHP-Mwith ducted air handler ACI-AUI36VHEATK3 tons · 36,000 Btu/h · DuctedCold-climate pick, score 78.6Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.96 (COP at 5°F)
    Good
    Winter efficiency
    9.5 (HSPF2)
    Great
    Cooling efficiency
    16.0 (SEER2)
    Good
    Hot-day cooling
    10.0 (EER2)
    Below the middle
    57.8score / 100Heating 78 · Cooling 38
  2. 2ACI-CCO36CP21with ducted air handler ACI-CCO36CP21ATK2.5 tons · 30,000 Btu/h · DuctedCold-climate pick, score 68.3Meets Xcel CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.7 (HSPF2)
    Great
    Cooling efficiency
    15.5 (SEER2)
    Below the middle
    Hot-day cooling
    10.5 (EER2)
    Below the middle
    52.8score / 100Heating 68 · Cooling 37
  3. 3ACI-AUO30SHP-Mwith ducted air handler ACI-CCO36CP21ATK2.5 tons · 30,000 Btu/h · DuctedCold-climate pick, score 67.8Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.7 (HSPF2)
    Great
    Cooling efficiency
    15.5 (SEER2)
    Below the middle
    Hot-day cooling
    10.5 (EER2)
    Below the middle
    52.6score / 100Heating 68 · Cooling 37

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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