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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 39% and a typical Legacy Systems model 39%. They are level.

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

ENERGI AIR

39%

of similar heat pumps beaten by its typical model

Well below average

46 models listed

Legacy Systems

39%

of similar heat pumps beaten by its typical model

Well below average

46 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 40%Legacy Systems: Beats 39%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FENERGI AIR: Beats 13%Legacy Systems: Beats 13%
  • Winter-long heating efficiencyHSPF2ENERGI AIR: Beats 21%Legacy Systems: Beats 21%
  • Summer-long cooling efficiencySEER2ENERGI AIR: Beats 31%Legacy Systems: Beats 30%
  • Hot-day cooling efficiencyEER2ENERGI AIR: Beats 67%Legacy Systems: Beats 66%

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
    7%
    Legacy Systems
    7%

  • 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