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Puremind vs THERMAL ZONE: heat pump ratings compared

Against heat pumps of the same size and type, a typical Puremind model beats 37% and a typical THERMAL ZONE model 30%. Puremind rates higher overall.

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

Puremind

37%

of similar heat pumps beaten by its typical model

Well below average

95 models listed

THERMAL ZONE

30%

of similar heat pumps beaten by its typical model

Well below average

101 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°FPuremind: Beats 24%THERMAL ZONE: Beats 40%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FPuremind: Beats 40%THERMAL ZONE: Beats 26%
  • Winter-long heating efficiencyHSPF2Puremind: Beats 51%THERMAL ZONE: Beats 23%
  • Summer-long cooling efficiencySEER2Puremind: Beats 44%THERMAL ZONE: Beats 24%
  • Hot-day cooling efficiencyEER2Puremind: Beats 28%THERMAL ZONE: Beats 31%

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

    Puremind
    47%
    THERMAL ZONE
    8%

  • Xcel CC

    Puremind
    53%
    THERMAL ZONE
    8%

  • CEE Advanced

    Puremind
    0%
    THERMAL ZONE
    0%

  • ENERGY STAR CC

    Puremind
    0%
    THERMAL ZONE
    8%

Top cold-climate picks, ductless up to 1.5 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 Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling). What size is my system?

Puremind

  1. 1PTW09B1-EBH5D-04with ductless indoor unit PTW09B1-EBH5D-04PuremindAlso listed as ATW09B1-EBH5D-041 ton · 9,000 Btu/h · DuctlessKeeps 101% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    101% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    63.3score / 100
  2. 2PTW12B1-EBH5D-04with ductless indoor unit PTW12B1-EBH5D-04PuremindAlso listed as ATW12B1-EBH5D-041 ton · 12,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    62.1score / 100
  3. 3PTW12B1-EBH4O-04with ductless indoor unit PTW12B1-EBH4O-04PuremindAlso listed as ATW12B1-EBH4O-04, CTW12B1-EBH4O-041 ton · 12,000 Btu/h · DuctlessKeeps 72% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    72% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.10 (COP at 5°F)
    Great
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    59.5score / 100

THERMAL ZONE

No ductless, up to 1.5 tons model from THERMAL ZONE.

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