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Durastar vs IAIR: heat pump ratings compared

Against heat pumps of the same size and type, a typical Durastar model beats 59% and a typical IAIR model 18%. Durastar rates higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

Durastar

59%

of similar heat pumps beaten by its typical model

Above average

35 models listed

IAIR

18%

of similar heat pumps beaten by its typical model

Well below average

35 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°FDurastar: Beats 54%IAIR: Beats 2%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDurastar: Beats 55%IAIR: Beats 4%
  • Winter-long heating efficiencyHSPF2Durastar: Beats 66%IAIR: Beats 19%
  • Summer-long cooling efficiencySEER2Durastar: Beats 62%IAIR: Beats 15%
  • Hot-day cooling efficiencyEER2Durastar: Beats 57%IAIR: Beats 60%

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

    Durastar
    57%
    IAIR
    0%

  • Xcel CC

    Durastar
    46%
    IAIR
    0%

  • CEE Advanced

    Durastar
    3%
    IAIR
    0%

  • ENERGY STAR CC

    Durastar
    60%
    IAIR
    0%

Top cold-climate picks, ductless 5 tons and up

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, 5 tons and up (57,000 Btu/h and up cooling). What size is my system?

Durastar

No ductless, 5 tons and up model from Durastar.

IAIR

No ductless, 5 tons and up model from IAIR.

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