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COOL PRO vs DiamondAir: heat pump ratings compared

One of these brands has too few models with every rating for an overall score; see each rating below.

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

COOL PRO

—

of similar heat pumps beaten by its typical model

Not enough rated models

7 models listed

DiamondAir

—

of similar heat pumps beaten by its typical model

Not enough rated models

7 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°FCOOL PRO: Not ratedDiamondAir: Not rated
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCOOL PRO: Not ratedDiamondAir: Not rated
  • Winter-long heating efficiencyHSPF2COOL PRO: Beats 26%DiamondAir: Beats 26%
  • Summer-long cooling efficiencySEER2COOL PRO: Beats 23%DiamondAir: Beats 21%
  • Hot-day cooling efficiencyEER2COOL PRO: Beats 61%DiamondAir: 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

    COOL PRO
    0%
    DiamondAir
    0%

  • Xcel CC

    COOL PRO
    0%
    DiamondAir
    0%

  • CEE Advanced

    COOL PRO
    0%
    DiamondAir
    0%

  • ENERGY STAR CC

    COOL PRO
    0%
    DiamondAir
    0%

All-around best, ductless 5 tons and up

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

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

COOL PRO

No ductless, 5 tons and up model from COOL PRO.

DiamondAir

No ductless, 5 tons and up model from DiamondAir.

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