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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 44% and a typical ONE HOUR AIR CONDITIONING AND HEATING model 58%. ONE HOUR AIR CONDITIONING AND HEATING rates higher overall.

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

Legacy Systems

44%

of similar heat pumps beaten by its typical model

Below average

11 models listed

ONE HOUR AIR CONDITIONING AND HEATING

58%

of similar heat pumps beaten by its typical model

Above average

6 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 40%ONE HOUR AIR CONDITIONING AND HEATING: Beats 52%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FLegacy Systems: Beats 17%ONE HOUR AIR CONDITIONING AND HEATING: Beats 29%
  • Winter-long heating efficiencyHSPF2Legacy Systems: Beats 32%ONE HOUR AIR CONDITIONING AND HEATING: Beats 55%
  • Summer-long cooling efficiencySEER2Legacy Systems: Beats 31%ONE HOUR AIR CONDITIONING AND HEATING: Beats 51%
  • Hot-day cooling efficiencyEER2Legacy Systems: Beats 87%ONE HOUR AIR CONDITIONING AND HEATING: Beats 91%

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
    0%
    ONE HOUR AIR CONDITIONING AND HEATING
    50%

  • 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, ducted 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 Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Legacy Systems

None of Legacy Systems’s ducted, 2.5–3 tons models qualifies.

ONE HOUR AIR CONDITIONING AND HEATING

No ducted, 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