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COMFORTSTAR vs MRCOOL: heat pump ratings compared

Against heat pumps of the same size and type, a typical COMFORTSTAR model beats 48% and a typical MRCOOL model 54%. MRCOOL rates higher overall.

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

COMFORTSTAR

48%

of similar heat pumps beaten by its typical model

About average

117 models listed

MRCOOL

54%

of similar heat pumps beaten by its typical model

About average

111 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°FCOMFORTSTAR: Beats 46%MRCOOL: Beats 49%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCOMFORTSTAR: Beats 44%MRCOOL: Beats 41%
  • Winter-long heating efficiencyHSPF2COMFORTSTAR: Beats 49%MRCOOL: Beats 51%
  • Summer-long cooling efficiencySEER2COMFORTSTAR: Beats 44%MRCOOL: Beats 50%
  • Hot-day cooling efficiencyEER2COMFORTSTAR: Beats 44%MRCOOL: Beats 56%

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

    COMFORTSTAR
    37%
    MRCOOL
    47%

  • Xcel CC

    COMFORTSTAR
    24%
    MRCOOL
    25%

  • CEE Advanced

    COMFORTSTAR
    1%
    MRCOOL
    0%

  • ENERGY STAR CC

    COMFORTSTAR
    22%
    MRCOOL
    23%

Top cold-climate picks, ducted 3.5–4.5 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, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

COMFORTSTAR

  1. 1CXH048CD(O)-DUwith ducted air handler CPA-48DUBCOMFORTSTARAlso listed as CHF48CD(O)4 tons · 48,000 Btu/h · DuctedKeeps 88% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    88% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.02 (COP at 5°F)
    Good
    Seasonal efficiency
    10.3 (HSPF2)
    Top 10%
    86.4score / 100
  2. 2CVH-48-5SHCOMFORTSTAR4 tons · 47,000 Btu/h · DuctedKeeps 87% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    87% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    9.0 (HSPF2)
    Good
    74.9score / 100
  3. 3CPH48CD(O)with ducted air handler AHU48-SG2COMFORTSTAR4 tons · 47,000 Btu/h · DuctedKeeps 92% of its heat at 5°FMeets ENERGY STAR CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.4 (HSPF2)
    Great
    73.8score / 100

MRCOOL

  1. 1CENTRAL-60-HP-C-230A00with ducted air handler CENTRAL-60-HP-MUAH230A00MRCOOL4.5 tons · 55,000 Btu/h · DuctedKeeps 92% of its heat at 5°FMeets ENERGY STAR CC
    Heat kept at 5°F
    92% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.91 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.4 (HSPF2)
    Great
    77.1score / 100
  2. 2CENTRAL-48-HP-C-230A00with ducted air handler CENTRAL-48-HP-MUAH230A00MRCOOL4 tons · 47,000 Btu/h · DuctedKeeps 94% of its heat at 5°FMeets ENERGY STAR CC
    Heat kept at 5°F
    94% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    9.4 (HSPF2)
    Great
    72.4score / 100
  3. 3MDPH180484MRCOOL4 tons · 47,000 Btu/h · DuctedKeeps 98% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    98% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.5 (HSPF2)
    Good
    62.4score / 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.

Open the advanced view