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Comfort Temps vs Ozone Spirit: heat pump ratings compared

Against heat pumps of the same size and type, a typical Comfort Temps model beats 49% and a typical Ozone Spirit model 47%. Comfort Temps rates slightly higher overall.

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

Comfort Temps

49%

of similar heat pumps beaten by its typical model

About average

20 models listed

Ozone Spirit

47%

of similar heat pumps beaten by its typical model

About average

19 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°FComfort Temps: Beats 37%Ozone Spirit: Beats 72%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FComfort Temps: Beats 38%Ozone Spirit: Beats 15%
  • Winter-long heating efficiencyHSPF2Comfort Temps: Beats 53%Ozone Spirit: Beats 14%
  • Summer-long cooling efficiencySEER2Comfort Temps: Beats 59%Ozone Spirit: Beats 23%
  • Hot-day cooling efficiencyEER2Comfort Temps: Beats 52%Ozone Spirit: Beats 17%

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

    Comfort Temps
    100%
    Ozone Spirit
    16%

  • Xcel CC

    Comfort Temps
    90%
    Ozone Spirit
    0%

  • CEE Advanced

    Comfort Temps
    0%
    Ozone Spirit
    0%

  • ENERGY STAR CC

    Comfort Temps
    60%
    Ozone Spirit
    0%

All-around best, ductless 3.5–4.5 tons

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

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

Comfort Temps

No ductless, 3.5–4.5 tons model from Comfort Temps.

Ozone Spirit

No ductless, 3.5–4.5 tons model from Ozone Spirit.

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