MAXI AIR vs MSH LEGACY: heat pump ratings compared
Against heat pumps of the same size and type, a typical MAXI AIR model beats 67% and a typical MSH LEGACY model 51%. MAXI AIR rates higher overall.
Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated
MAXI AIR
67%
of similar heat pumps beaten by its typical model
Well above average19 models listed
MSH LEGACY
51%
of similar heat pumps beaten by its typical model
About average18 models listed
- Efficiency on a 5°F dayCOP at 5°FMAXI AIR: Beats 41%MSH LEGACY: Beats 78%
- Heating power kept at 5°FCapacity at 5°F vs 47°FMAXI AIR: Beats 70%MSH LEGACY: Beats 16%
- Winter-long heating efficiencyHSPF2MAXI AIR: Beats 75%MSH LEGACY: Beats 33%
- Summer-long cooling efficiencySEER2MAXI AIR: Beats 76%MSH LEGACY: Beats 29%
- Hot-day cooling efficiencyEER2MAXI AIR: Beats 63%MSH LEGACY: Beats 91%
Average (50%)Dashed outline: the other brand, for comparison
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Rebate standards
CEE 2025
- MAXI AIR
- 68%
- MSH LEGACY
- 0%
Xcel CC
- MAXI AIR
- 74%
- MSH LEGACY
- 0%
CEE Advanced
- MAXI AIR
- 0%
- MSH LEGACY
- 0%
ENERGY STAR CC
- MAXI AIR
- 53%
- 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?
MAXI AIR
- 1NE-T53-MULTI28EMAXI AIRAlso listed as NE-T53-MULTI28E2.5 tons · 28,000 Btu/h · DuctedCold-climate pick, score 66.7Meets CEE 2025, CEE 2026, Xcel CC
- Heat kept at 5°F
- 89% (Capacity at 5°F vs 47°F)
- Great
- Efficiency at 5°F
- 1.80 (COP at 5°F)
- Below the middle
- Winter efficiency
- 9.5 (HSPF2)
- Great
- Cooling efficiency
- 20.0 (SEER2)
- Top 10%
- Hot-day cooling
- 11.7 (EER2)
- Good
- 2NE-T53-MULTI36EMAXI AIR3 tons · 36,000 Btu/h · DuctedCold-climate pick, score 64.2Meets none of the standards tracked here
- Heat kept at 5°F
- 89% (Capacity at 5°F vs 47°F)
- Great
- Efficiency at 5°F
- 1.70 (COP at 5°F)
- Below the middle
- Winter efficiency
- 10.0 (HSPF2)
- Top 10%
- Cooling efficiency
- 19.0 (SEER2)
- Great
- Hot-day cooling
- 11.7 (EER2)
- Good
- 3NE-T53-MULTI36E*MAXI AIR3 tons · 36,000 Btu/h · DuctedCold-climate pick, score 63.7Meets none of the standards tracked here
- Heat kept at 5°F
- 89% (Capacity at 5°F vs 47°F)
- Great
- Efficiency at 5°F
- 1.70 (COP at 5°F)
- Below the middle
- Winter efficiency
- 10.0 (HSPF2)
- Top 10%
- Cooling efficiency
- 19.0 (SEER2)
- Great
- Hot-day cooling
- 11.7 (EER2)
- Good
MSH LEGACY
- 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%
- 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
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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