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Wells vs ZOKOP: heat pump ratings compared

Against heat pumps of the same size and type, a typical Wells model beats 63% and a typical ZOKOP model 34%. Wells rates higher overall.

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

Wells

63%

of similar heat pumps beaten by its typical model

Well above average

37 models listed

ZOKOP

34%

of similar heat pumps beaten by its typical model

Well below average

37 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°FWells: Beats 64%ZOKOP: Beats 34%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FWells: Beats 61%ZOKOP: Beats 33%
  • Winter-long heating efficiencyHSPF2Wells: Beats 74%ZOKOP: Beats 46%
  • Summer-long cooling efficiencySEER2Wells: Beats 62%ZOKOP: Beats 36%
  • Hot-day cooling efficiencyEER2Wells: Beats 59%ZOKOP: Beats 26%

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

    Wells
    87%
    ZOKOP
    68%

  • Xcel CC

    Wells
    81%
    ZOKOP
    57%

  • CEE Advanced

    Wells
    3%
    ZOKOP
    0%

  • ENERGY STAR CC

    Wells
    84%
    ZOKOP
    0%

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?

Wells

  1. 1WOS-06PRE/230with ductless indoor unit WI1C-06MOC/230Wells0.5 tons · 6,500 Btu/h · DuctlessKeeps 109% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    109% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.40 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    12.0 (HSPF2)
    Top 10%
    94.4score / 100
  2. 2WOS-09QUA/230with ductless indoor unit WICS-09MOC/230Wells1 ton · 9,000 Btu/h · DuctlessKeeps 96% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    96% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.27 (COP at 5°F)
    Top 10%
    Seasonal efficiency
    13.9 (HSPF2)
    Top 10%
    89.5score / 100
  3. 3WOS-18QUA/230with ductless indoor unit WICS-16MOC/230Wells1.5 tons · 16,000 Btu/h · DuctlessKeeps 77% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    77% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.16 (COP at 5°F)
    Great
    Seasonal efficiency
    13.5 (HSPF2)
    Top 10%
    78.7score / 100

ZOKOP

  1. 1TMSC-18HA2/I2XI20B-OZOKOPAlso listed as TMSC-18HA2/I2XI20B-O1.5 tons · 18,000 Btu/h · DuctlessKeeps 80% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    80% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    68.6score / 100
  2. 2ZP18M2/19-OZOKOP1.5 tons · 18,000 Btu/h · DuctlessKeeps 78% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    62.1score / 100
  3. 3TMSC-09HA2/I2XI19B-O*with ductless indoor unit TMSC-09HA2/I2XI19B-IZOKOP1 ton · 9,000 Btu/h · DuctlessKeeps 74% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    74% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    50.4score / 100

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