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MSH LEGACY vs TRUENORTH: heat pump ratings compared

Against heat pumps of the same size and type, a typical MSH LEGACY model beats 34% and a typical TRUENORTH model 53%. TRUENORTH rates higher overall.

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

MSH LEGACY

34%

of similar heat pumps beaten by its typical model

Well below average

7 models listed

TRUENORTH

53%

of similar heat pumps beaten by its typical model

About average

10 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°FMSH LEGACY: Beats 25%TRUENORTH: Beats 54%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FMSH LEGACY: Beats 11%TRUENORTH: Beats 59%
  • Winter-long heating efficiencyHSPF2MSH LEGACY: Beats 24%TRUENORTH: Beats 38%
  • Summer-long cooling efficiencySEER2MSH LEGACY: Beats 39%TRUENORTH: Beats 50%
  • Hot-day cooling efficiencyEER2MSH LEGACY: Beats 56%TRUENORTH: Beats 63%

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

    MSH LEGACY
    0%
    TRUENORTH
    90%

  • Xcel CC

    MSH LEGACY
    0%
    TRUENORTH
    90%

  • CEE Advanced

    MSH LEGACY
    0%
    TRUENORTH
    10%

  • ENERGY STAR CC

    MSH LEGACY
    0%
    TRUENORTH
    0%

All-around best, ducted 3.5–4.5 tons

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

Showing Ducted, 3.5–4.5 tons (39,000–56,999 Btu/h cooling). What size is my system?

MSH LEGACY

  1. 1PHB560000K000B*MSH LEGACY4.5 tons · 56,000 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    7.7 (HSPF2)
    Below the middle
    Cooling efficiency
    15.5 (SEER2)
    Below the middle
    Hot-day cooling
    11.5 (EER2)
    Good
    46.0score / 100Heating 36 · Cooling 56
  2. 2PHB560000H000B*MSH LEGACY4.5 tons · 56,000 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
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    7.7 (HSPF2)
    Below the middle
    Cooling efficiency
    15.5 (SEER2)
    Below the middle
    Hot-day cooling
    11.5 (EER2)
    Good
    46.0score / 100Heating 36 · Cooling 56
  3. 3PHB548000K000B*MSH LEGACY4 tons · 46,500 Btu/h · DuctedNot a cold-climate pick: keeps 40% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    41% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    7.2 (HSPF2)
    Below the middle
    Cooling efficiency
    15.2 (SEER2)
    Below the middle
    Hot-day cooling
    11.5 (EER2)
    Good
    34.4score / 100Heating 17 · Cooling 52

TRUENORTH

  1. 1WLWHD(42)ND6MOTRUENORTH3.5 tons · 42,000 Btu/h · DuctedCold-climate pick, score 55.7Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    86% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.1 (HSPF2)
    Good
    Cooling efficiency
    18.0 (SEER2)
    Great
    Hot-day cooling
    12.0 (EER2)
    Great
    69.1score / 100Heating 56 · Cooling 83
  2. 2WLWHD(60)ND6MOTRUENORTH4.5 tons · 55,000 Btu/h · DuctedNot a cold-climate pick: keeps 56% of its heat at 5°FMeets CEE 2025, CEE 2026
    Heat kept at 5°F
    56% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.30 (COP at 5°F)
    Great
    Winter efficiency
    8.0 (HSPF2)
    Below the middle
    Cooling efficiency
    19.0 (SEER2)
    Great
    Hot-day cooling
    11.7 (EER2)
    Good
    67.6score / 100Heating 55 · Cooling 80

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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