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ComfiAire vs MSH LEGACY: heat pump ratings compared

Against heat pumps of the same size and type, a typical ComfiAire model beats 59% and a typical MSH LEGACY model 51%. ComfiAire rates higher overall.

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

ComfiAire

59%

of similar heat pumps beaten by its typical model

Above average

18 models listed

MSH LEGACY

51%

of similar heat pumps beaten by its typical model

About average

18 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°FComfiAire: Beats 39%MSH LEGACY: Beats 78%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FComfiAire: Beats 74%MSH LEGACY: Beats 16%
  • Winter-long heating efficiencyHSPF2ComfiAire: Beats 45%MSH LEGACY: Beats 33%
  • Summer-long cooling efficiencySEER2ComfiAire: Beats 49%MSH LEGACY: Beats 29%
  • Hot-day cooling efficiencyEER2ComfiAire: Beats 43%MSH LEGACY: 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

    ComfiAire
    61%
    MSH LEGACY
    0%

  • Xcel CC

    ComfiAire
    61%
    MSH LEGACY
    0%

  • CEE Advanced

    ComfiAire
    0%
    MSH LEGACY
    0%

  • ENERGY STAR CC

    ComfiAire
    61%
    MSH LEGACY
    0%

All-around best, ducted 2.5–3 tons

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

Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

ComfiAire

  1. 1CA-36UHDOwith ducted air handler CA-36UHDIComfiAire3 tons · 34,000 Btu/h · DuctedCold-climate pick, score 75.1Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.05 (COP at 5°F)
    Great
    Winter efficiency
    9.5 (HSPF2)
    Great
    Cooling efficiency
    18.0 (SEER2)
    Great
    Hot-day cooling
    10.1 (EER2)
    Below the middle
    63.2score / 100Heating 75 · Cooling 51

MSH LEGACY

  1. 1N4H5S30*K*AAA*with ducted air handler FMA4X30**ALMSH LEGACYAlso listed as R4H5S30*K*AAA2.5 tons · 28,200 Btu/h · DuctedNot a cold-climate pick: keeps 46% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    46% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.18 (COP at 5°F)
    Great
    Winter efficiency
    8.1 (HSPF2)
    Below the middle
    Cooling efficiency
    15.2 (SEER2)
    Below the middle
    Hot-day cooling
    12.5 (EER2)
    Top 10%
    56.1score / 100Heating 47 · Cooling 66
  2. 2N4H5S36*K*AAA*with indoor coil EA*4X37L21A and furnace *92MSN0802120AMSH LEGACYAlso listed as R4H5S36*K*AAA3 tons · 34,600 Btu/h · DuctedNot a cold-climate pick: keeps 47% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    46% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Winter efficiency
    7.8 (HSPF2)
    Below the middle
    Cooling efficiency
    15.5 (SEER2)
    Below the middle
    Hot-day cooling
    12.0 (EER2)
    Great
    54.3score / 100Heating 42 · Cooling 67

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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