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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 2 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, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

ENERGI AIR

No ductless, 2 tons model from ENERGI AIR.

Legacy Systems

No ductless, 2 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