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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 2.5–3 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, 2.5–3 tons (27,000–38,999 Btu/h cooling). What size is my system?

Wells

  1. 1WOM-36HH5/230Wells3 tons · 36,000 Btu/h · DuctlessKeeps 104% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    104% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    1.95 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.9 (HSPF2)
    Top 10%
    72.6score / 100
  2. 2WOS-33PRE/230with ductless indoor unit WIHW-33MOC/230Wells3 tons · 33,000 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)
    Good
    Efficiency at 5°F
    1.91 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    56.5score / 100
  3. 3WOM-27HH4/230Wells2.5 tons · 27,000 Btu/h · DuctlessKeeps 100% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    100% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.90 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    53.7score / 100

ZOKOP

  1. 1TMSC-27HA2/I2XI19B-OZOKOPAlso listed as TMSC-27HA2/I2XI19B-O2.5 tons · 27,000 Btu/h · DuctlessKeeps 71% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    57.5score / 100
  2. 2TMSC-36HA2/I2XI19B-OZOKOPAlso listed as TMSC-36HA2/I2XI19B-O3 tons · 35,000 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
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    52.5score / 100
  3. 3ZP27M2/19-OZOKOP2.5 tons · 28,000 Btu/h · DuctlessKeeps 75% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    75% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    9.5 (HSPF2)
    Below the middle
    47.6score / 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