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ENERGI AIR vs Legacy Systems: heat pump ratings compared

Against heat pumps of the same size and type, a typical ENERGI AIR model beats 58% and a typical Legacy Systems model 44%. ENERGI AIR rates higher overall.

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

ENERGI AIR

58%

of similar heat pumps beaten by its typical model

Above average

6 models listed

Legacy Systems

44%

of similar heat pumps beaten by its typical model

Below average

11 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°FENERGI AIR: Beats 52%Legacy Systems: Beats 40%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FENERGI AIR: Beats 29%Legacy Systems: Beats 17%
  • Winter-long heating efficiencyHSPF2ENERGI AIR: Beats 55%Legacy Systems: Beats 32%
  • Summer-long cooling efficiencySEER2ENERGI AIR: Beats 51%Legacy Systems: Beats 31%
  • Hot-day cooling efficiencyEER2ENERGI AIR: Beats 91%Legacy Systems: Beats 87%

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

    ENERGI AIR
    50%
    Legacy Systems
    0%

  • Xcel CC

    ENERGI AIR
    0%
    Legacy Systems
    0%

  • CEE Advanced

    ENERGI AIR
    0%
    Legacy Systems
    0%

  • ENERGY STAR CC

    ENERGI AIR
    0%
    Legacy Systems
    0%

Top cold-climate picks, ductless up to 1.5 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, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

ENERGI AIR

No ductless, up to 1.5 tons model from ENERGI AIR.

Legacy Systems

No ductless, up to 1.5 tons model from Legacy Systems.

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