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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%

All-around best, ducted 5 tons and up

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ducted, 5 tons and up (57,000 Btu/h and up cooling). What size is my system?

Legacy Systems

No ducted, 5 tons and up model from Legacy Systems.

ONE HOUR AIR CONDITIONING AND HEATING

  1. 1GLZS5BA6010A*with ducted air handler AMST60DU1300AONE HOUR AIR CONDITIONING AND HEATING5 tons · 57,000 Btu/h · DuctedNot a cold-climate pick: keeps 52% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    53% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.2 (HSPF2)
    Good
    Cooling efficiency
    16.0 (SEER2)
    Good
    Hot-day cooling
    12.0 (EER2)
    Great
    63.0score / 100Heating 54 · Cooling 72
  2. 2GLZT7CA6010A*with ducted air handler AMVT60DP1300AONE HOUR AIR CONDITIONING AND HEATING5 tons · 57,000 Btu/h · DuctedNot a cold-climate pick: keeps 53% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    53% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.2 (HSPF2)
    Good
    Cooling efficiency
    16.2 (SEER2)
    Good
    Hot-day cooling
    11.7 (EER2)
    Good
    62.8score / 100Heating 55 · Cooling 71

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