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DIYCOOL vs ZENAIRE: heat pump ratings compared

Against heat pumps of the same size and type, a typical DIYCOOL model beats 54% and a typical ZENAIRE model 17%. DIYCOOL rates higher overall.

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

DIYCOOL

54%

of similar heat pumps beaten by its typical model

About average

24 models listed

ZENAIRE

17%

of similar heat pumps beaten by its typical model

Well below average

24 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°FDIYCOOL: Beats 53%ZENAIRE: Beats 73%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDIYCOOL: Beats 51%ZENAIRE: Beats 0%
  • Winter-long heating efficiencyHSPF2DIYCOOL: Beats 63%ZENAIRE: Beats 18%
  • Summer-long cooling efficiencySEER2DIYCOOL: Beats 60%ZENAIRE: Beats 17%
  • Hot-day cooling efficiencyEER2DIYCOOL: Beats 47%ZENAIRE: Beats 37%

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

    DIYCOOL
    79%
    ZENAIRE
    0%

  • Xcel CC

    DIYCOOL
    71%
    ZENAIRE
    0%

  • CEE Advanced

    DIYCOOL
    4%
    ZENAIRE
    0%

  • ENERGY STAR CC

    DIYCOOL
    75%
    ZENAIRE
    0%

All-around best, ducted 3.5–4.5 tons

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

Showing Ducted, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

DIYCOOL

  1. 1ACIQ-48-HP32with ducted air handler ACIQ-48-AH32DIYCOOL4 tons · 48,000 Btu/h · DuctedCold-climate pick, score 78.9Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Great
    Cooling efficiency
    19.0 (SEER2)
    Great
    Hot-day cooling
    12.0 (EER2)
    Great
    83.1score / 100Heating 79 · Cooling 87
  2. 2EZ-48Z-M5BDIYCOOL3.5 tons · 43,000 Btu/h · DuctedCold-climate pick, score 70.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    79% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.5 (HSPF2)
    Top 10%
    Cooling efficiency
    20.0 (SEER2)
    Top 10%
    Hot-day cooling
    12.0 (EER2)
    Great
    80.2score / 100Heating 71 · Cooling 90
  3. 3ACIQ-60-HP32with ducted air handler ACIQ-60-AH32DIYCOOL4.5 tons · 53,000 Btu/h · DuctedCold-climate pick, score 85.1Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Winter efficiency
    10.5 (HSPF2)
    Top 10%
    Cooling efficiency
    18.5 (SEER2)
    Great
    Hot-day cooling
    11.5 (EER2)
    Good
    79.0score / 100Heating 85 · Cooling 73

ZENAIRE

None of ZENAIRE’s ducted, 3.5–4.5 tons models has all five ratings.

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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