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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%

Top cold-climate picks, ductless 3.5–4.5 tons

Only units that keep at least 70% of their heat at 5°F, ranked on heat kept, efficiency at 5°F and seasonal efficiency (HSPF2), against units their size.

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

ORTECH

  1. 1OAH-MZ42K-208-CH-OORTECH3.5 tons · 42,000 Btu/h · DuctlessKeeps 81% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    81% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.5 (HSPF2)
    Good
    50.3score / 100

ZENAIRE

No ductless, 3.5–4.5 tons model from ZENAIRE.

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