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Legacy Systems vs ONE HOUR AIR CONDITIONING AND HEATING: heat pump ratings compared

Against heat pumps of the same size and type, a typical Legacy Systems model beats 39% and a typical ONE HOUR AIR CONDITIONING AND HEATING model 39%. They are level.

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

Legacy Systems

39%

of similar heat pumps beaten by its typical model

Well below average

46 models listed

ONE HOUR AIR CONDITIONING AND HEATING

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°FLegacy Systems: Beats 39%ONE HOUR AIR CONDITIONING AND HEATING: Beats 40%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FLegacy Systems: Beats 13%ONE HOUR AIR CONDITIONING AND HEATING: Beats 13%
  • Winter-long heating efficiencyHSPF2Legacy Systems: Beats 21%ONE HOUR AIR CONDITIONING AND HEATING: Beats 21%
  • Summer-long cooling efficiencySEER2Legacy Systems: Beats 30%ONE HOUR AIR CONDITIONING AND HEATING: Beats 31%
  • Hot-day cooling efficiencyEER2Legacy Systems: Beats 66%ONE HOUR AIR CONDITIONING AND HEATING: Beats 67%

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

    Legacy Systems
    7%
    ONE HOUR AIR CONDITIONING AND HEATING
    7%

  • Xcel CC

    Legacy Systems
    0%
    ONE HOUR AIR CONDITIONING AND HEATING
    0%

  • CEE Advanced

    Legacy Systems
    0%
    ONE HOUR AIR CONDITIONING AND HEATING
    0%

  • ENERGY STAR CC

    Legacy Systems
    0%
    ONE HOUR AIR CONDITIONING AND HEATING
    0%

Top cold-climate picks, ductless 2.5–3 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, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Legacy Systems

No ductless, 2.5–3 tons model from Legacy Systems.

ONE HOUR AIR CONDITIONING AND HEATING

No ductless, 2.5–3 tons model from ONE HOUR AIR CONDITIONING AND HEATING.

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