Skip to content
Rebate.Blue

DIYCOOL vs ZERO: heat pump ratings compared

Against heat pumps of the same size and type, a typical DIYCOOL model beats 54% and a typical ZERO model 53%. DIYCOOL rates slightly higher overall.

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

DIYCOOL

54%

of similar heat pumps beaten by its typical model

About average

24 models listed

ZERO

53%

of similar heat pumps beaten by its typical model

About average

119 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°FDIYCOOL: Beats 53%ZERO: Beats 45%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FDIYCOOL: Beats 51%ZERO: Beats 52%
  • Winter-long heating efficiencyHSPF2DIYCOOL: Beats 63%ZERO: Beats 57%
  • Summer-long cooling efficiencySEER2DIYCOOL: Beats 60%ZERO: Beats 58%
  • Hot-day cooling efficiencyEER2DIYCOOL: Beats 47%ZERO: Beats 48%

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

    DIYCOOL
    79%
    ZERO
    71%

  • Xcel CC

    DIYCOOL
    71%
    ZERO
    65%

  • CEE Advanced

    DIYCOOL
    4%
    ZERO
    0%

  • ENERGY STAR CC

    DIYCOOL
    75%
    ZERO
    53%

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?

DIYCOOL

No ductless, 5 tons and up model from DIYCOOL.

ZERO

None of ZERO’s ductless, 5 tons and up models qualifies.

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