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1HVAC vs LG: heat pump ratings compared

Against heat pumps of the same size and type, a typical 1HVAC model beats 61% and a typical LG model 56%. 1HVAC rates higher overall.

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

1HVAC

61%

of similar heat pumps beaten by its typical model

Well above average

70 models listed

LG

56%

of similar heat pumps beaten by its typical model

Above average

100 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°F1HVAC: Beats 57%LG: Beats 56%
  • Heating power kept at 5°FCapacity at 5°F vs 47°F1HVAC: Beats 59%LG: Beats 57%
  • Winter-long heating efficiencyHSPF21HVAC: Beats 71%LG: Beats 51%
  • Summer-long cooling efficiencySEER21HVAC: Beats 64%LG: Beats 49%
  • Hot-day cooling efficiencyEER21HVAC: Beats 55%LG: Beats 64%

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

    1HVAC
    87%
    LG
    86%

  • Xcel CC

    1HVAC
    74%
    LG
    78%

  • CEE Advanced

    1HVAC
    4%
    LG
    11%

  • ENERGY STAR CC

    1HVAC
    77%
    LG
    64%

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?

1HVAC

  1. 1ES-55Z-M6C1HVAC5 tons · 60,000 Btu/h · DuctedNot a cold-climate pick: keeps 66% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    67% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Winter efficiency
    9.2 (HSPF2)
    Great
    Cooling efficiency
    18.0 (SEER2)
    Great
    Hot-day cooling
    10.0 (EER2)
    Below the middle
    62.5score / 100Heating 71 · Cooling 54

LG

  1. 1KUMXB601ALG5 tons · 60,000 Btu/h · DuctedCold-climate pick, score 94.6Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.33 (COP at 5°F)
    Top 10%
    Winter efficiency
    9.5 (HSPF2)
    Great
    Cooling efficiency
    18.5 (SEER2)
    Top 10%
    Hot-day cooling
    11.7 (EER2)
    Good
    89.5score / 100Heating 95 · Cooling 84
  2. 2ZRUM060GSS0LG5 tons · 60,000 Btu/h · DuctedCold-climate pick, score 73.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    81% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.1 (HSPF2)
    Great
    Cooling efficiency
    16.2 (SEER2)
    Good
    Hot-day cooling
    11.7 (EER2)
    Good
    71.8score / 100Heating 73 · 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