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Clima Smart vs TKS: heat pump ratings compared

Against heat pumps of the same size and type, a typical Clima Smart model beats 73% and a typical TKS model 31%. Clima Smart rates higher overall.

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

Clima Smart

73%

of similar heat pumps beaten by its typical model

Well above average

8 models listed

TKS

31%

of similar heat pumps beaten by its typical model

Well below average

8 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°FClima Smart: Beats 35%TKS: Beats 23%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FClima Smart: Beats 79%TKS: Beats 43%
  • Winter-long heating efficiencyHSPF2Clima Smart: Beats 68%TKS: Beats 16%
  • Summer-long cooling efficiencySEER2Clima Smart: Beats 89%TKS: Beats 35%
  • Hot-day cooling efficiencyEER2Clima Smart: Beats 80%TKS: Beats 36%

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

    Clima Smart
    100%
    TKS
    75%

  • Xcel CC

    Clima Smart
    100%
    TKS
    100%

  • CEE Advanced

    Clima Smart
    0%
    TKS
    0%

  • ENERGY STAR CC

    Clima Smart
    100%
    TKS
    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?

Clima Smart

  1. 1MU-CSU18HEI2NAM0T24-3POClima Smart1.5 tons · 20,000 Btu/h · DuctlessKeeps 99% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    99% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Seasonal efficiency
    10.0 (HSPF2)
    Good
    70.9score / 100
  2. 2CSU09HEI2NAM0T24with ductless indoor unit CSU09HEI2NAM0T24Clima Smart1 ton · 9,000 Btu/h · DuctlessKeeps 101% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR 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
  3. 3CSU12HEI2NAM0T24with ductless indoor unit CSU12HEI2NAM0T24Clima Smart1 ton · 12,000 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
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    10.5 (HSPF2)
    Great
    62.1score / 100

TKS

  1. 1TWSG-0919SR32220Owith ductless indoor unit TWSG-0919SR32220ITKS1 ton · 9,100 Btu/h · DuctlessKeeps 76% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.94 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.8 (HSPF2)
    Below the middle
    41.6score / 100
  2. 2TWSG-0919SR32110Owith ductless indoor unit TWSG-0919SR32110ITKS1 ton · 9,100 Btu/h · DuctlessKeeps 76% of its heat at 5°FMeets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.86 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.8 (HSPF2)
    Below the middle
    37.3score / 100
  3. 3TWSG-1219SR32220Owith ductless indoor unit TWSG-1219SR32220ITKS1 ton · 12,000 Btu/h · DuctlessKeeps 76% of its heat at 5°FMeets Xcel CC
    Heat kept at 5°F
    76% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Seasonal efficiency
    8.5 (HSPF2)
    Below the middle
    26.7score / 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