MRCOOL vs Puremind: heat pump ratings compared
Against heat pumps of the same size and type, a typical MRCOOL model beats 53% and a typical Puremind model 37%. MRCOOL rates higher overall.
Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated
MRCOOL
53%
of similar heat pumps beaten by its typical model
About average92 models listed
Puremind
37%
of similar heat pumps beaten by its typical model
Well below average95 models listed
- Efficiency on a 5°F dayCOP at 5°FMRCOOL: Beats 50%Puremind: Beats 24%
- Heating power kept at 5°FCapacity at 5°F vs 47°FMRCOOL: Beats 50%Puremind: Beats 40%
- Winter-long heating efficiencyHSPF2MRCOOL: Beats 56%Puremind: Beats 51%
- Summer-long cooling efficiencySEER2MRCOOL: Beats 54%Puremind: Beats 44%
- Hot-day cooling efficiencyEER2MRCOOL: Beats 49%Puremind: Beats 28%
Average (50%)Dashed outline: the other brand, for comparison
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Rebate standards
CEE 2025
- MRCOOL
- 67%
- Puremind
- 47%
Xcel CC
- MRCOOL
- 58%
- Puremind
- 53%
CEE Advanced
- MRCOOL
- 0%
- Puremind
- 0%
ENERGY STAR CC
- MRCOOL
- 57%
- Puremind
- 0%
All-around best, ductless 2.5–3 tons
Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.
Showing Ductless, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?
MRCOOL
- 1MULTI4-27HP230C-OMRCOOL2.5 tons · 27,000 Btu/h · DuctlessCold-climate pick, score 41.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 70% (Capacity at 5°F vs 47°F)
- Below the middle
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 9.5 (HSPF2)
- Below the middle
- Cooling efficiency
- 25.0 (SEER2)
- Top 10%
- Hot-day cooling
- 13.0 (EER2)
- Great
- 2MULTI5-36HP230C-OMRCOOL3 tons · 36,000 Btu/h · DuctlessCold-climate pick, score 39.8Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 70% (Capacity at 5°F vs 47°F)
- Below the middle
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 9.5 (HSPF2)
- Below the middle
- Cooling efficiency
- 24.0 (SEER2)
- Top 10%
- Hot-day cooling
- 12.0 (EER2)
- Good
- 3DIY-MULTI5-36HP230D-OMRCOOL3 tons · 34,000 Btu/h · DuctlessCold-climate pick, score 41.3Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
- Heat kept at 5°F
- 70% (Capacity at 5°F vs 47°F)
- Below the middle
- Efficiency at 5°F
- 2.00 (COP at 5°F)
- Good
- Winter efficiency
- 9.9 (HSPF2)
- Below the middle
- Cooling efficiency
- 23.0 (SEER2)
- Great
- Hot-day cooling
- 12.0 (EER2)
- Good
Puremind
- 1PTW36B1-EBH3O-04with ductless indoor unit PTW36B1-EBH3O-04PuremindAlso listed as PTW36B1-BBH4O-04, ATW36B1-BBH4O-04, CTW36B1-BBH4O-043 tons · 36,000 Btu/h · DuctlessNot a cold-climate pick: keeps 63% of its heat at 5°FMeets none of the standards tracked here
- Heat kept at 5°F
- 64% (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
- 9.5 (HSPF2)
- Below the middle
- Cooling efficiency
- 20.0 (SEER2)
- Below the middle
- Hot-day cooling
- 9.5 (EER2)
- Below the middle
- 2PTW36B1-BBH3O-04with ductless indoor unit PTW36B1-BBH3O-04PuremindAlso listed as ATW36B1-BBH3O-04, CTW36B1-BBH3O-043 tons · 35,000 Btu/h · DuctlessNot a cold-climate pick: keeps 50% of its heat at 5°FMeets none of the standards tracked here
- Heat kept at 5°F
- 51% (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
- 8.5 (HSPF2)
- Below the middle
- Cooling efficiency
- 17.0 (SEER2)
- Below the middle
- Hot-day cooling
- 9.5 (EER2)
- Below the middle
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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