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ORTECH vs ZENAIRE: heat pump ratings compared

Against heat pumps of the same size and type, a typical ORTECH model beats 58% and a typical ZENAIRE model 17%. ORTECH rates higher overall.

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

ORTECH

58%

of similar heat pumps beaten by its typical model

Above 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°FORTECH: Beats 53%ZENAIRE: Beats 73%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FORTECH: Beats 69%ZENAIRE: Beats 0%
  • Winter-long heating efficiencyHSPF2ORTECH: Beats 65%ZENAIRE: Beats 18%
  • Summer-long cooling efficiencySEER2ORTECH: Beats 67%ZENAIRE: Beats 17%
  • Hot-day cooling efficiencyEER2ORTECH: Beats 42%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

    ORTECH
    83%
    ZENAIRE
    0%

  • Xcel CC

    ORTECH
    79%
    ZENAIRE
    0%

  • CEE Advanced

    ORTECH
    4%
    ZENAIRE
    0%

  • ENERGY STAR CC

    ORTECH
    75%
    ZENAIRE
    0%

All-around best, ductless 2 tons

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

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

ORTECH

  1. 1OAH-MZ24K-208-CH-OORTECH2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 84.4Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    108% (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)
    Great
    Cooling efficiency
    24.0 (SEER2)
    Top 10%
    Hot-day cooling
    13.0 (EER2)
    Great
    85.3score / 100Heating 84 · Cooling 86
  2. 2OAH-MZ24K-208-PR-OORTECH2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 67.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    90% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    12.5 (EER2)
    Good
    71.8score / 100Heating 68 · Cooling 76
  3. 3OAH-SZ24K-208-PR-Owith ductless indoor unit OAH-SZ24K-208-PR-HORTECH2 tons · 23,000 Btu/h · DuctlessCold-climate pick, score 77.2Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    87% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.20 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Good
    68.0score / 100Heating 77 · Cooling 59

ZENAIRE

None of ZENAIRE’s ductless, 2 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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