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LG vs MRCOOL: heat pump ratings compared

Against heat pumps of the same size and type, a typical LG model beats 56% and a typical MRCOOL model 53%. LG rates slightly higher overall.

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

LG

56%

of similar heat pumps beaten by its typical model

Above average

100 models listed

MRCOOL

53%

of similar heat pumps beaten by its typical model

About average

92 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°FLG: Beats 56%MRCOOL: Beats 50%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FLG: Beats 57%MRCOOL: Beats 50%
  • Winter-long heating efficiencyHSPF2LG: Beats 51%MRCOOL: Beats 56%
  • Summer-long cooling efficiencySEER2LG: Beats 49%MRCOOL: Beats 54%
  • Hot-day cooling efficiencyEER2LG: Beats 64%MRCOOL: Beats 49%

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

    LG
    86%
    MRCOOL
    67%

  • Xcel CC

    LG
    78%
    MRCOOL
    58%

  • CEE Advanced

    LG
    11%
    MRCOOL
    0%

  • ENERGY STAR CC

    LG
    64%
    MRCOOL
    57%

Top cold-climate picks, ductless 2 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 tons (21,000–26,999 Btu/h cooling). What size is my system?

LG

  1. 1ZRUN024GSS0LG2 tons · 24,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.18 (COP at 5°F)
    Great
    Seasonal efficiency
    10.2 (HSPF2)
    Great
    85.4score / 100
  2. 2KUMXA241ALG2 tons · 24,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.13 (COP at 5°F)
    Great
    Seasonal efficiency
    9.8 (HSPF2)
    Good
    77.2score / 100
  3. 3KUSXB241Awith ductless indoor unit KNSCB241ALG2 tons · 23,000 Btu/h · DuctlessKeeps 85% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    85% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.2 (HSPF2)
    Great
    76.2score / 100

MRCOOL

  1. 1O-HH-24-HP-C-230C-Owith ductless indoor unit CASSETTE24HP-230C-OMRCOOLAlso listed as O-ES-24-HP-C-230C-O12 tons · 23,400 Btu/h · DuctlessKeeps 95% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    95% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.23 (COP at 5°F)
    Great
    Seasonal efficiency
    11.6 (HSPF2)
    Top 10%
    89.4score / 100
  2. 2AEPL**MHV22S2431B1Awith ductless indoor unit AEPL**AWM22E2431B1AMRCOOL2 tons · 23,000 Btu/h · DuctlessKeeps 73% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    73% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    61.6score / 100
  3. 3A-24-HP-C-230D-Owith ductless indoor unit A-24-HP-WMAH-230D-OMRCOOL2 tons · 24,000 Btu/h · DuctlessKeeps 71% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.14 (COP at 5°F)
    Great
    Seasonal efficiency
    9.3 (HSPF2)
    Below the middle
    48.0score / 100

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.

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