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iFLOW vs TK'S: heat pump ratings compared

Against heat pumps of the same size and type, a typical iFLOW model beats 43% and a typical TK'S model 48%. TK'S rates higher overall.

Covers older R-410A heat pumps, no longer installed new. See models sold today · Updated

iFLOW

43%

of similar heat pumps beaten by its typical model

Below average

14 models listed

TK'S

48%

of similar heat pumps beaten by its typical model

About average

15 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°FiFLOW: Beats 44%TK'S: Beats 34%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FiFLOW: Beats 57%TK'S: Beats 31%
  • Winter-long heating efficiencyHSPF2iFLOW: Beats 70%TK'S: Beats 58%
  • Summer-long cooling efficiencySEER2iFLOW: Beats 36%TK'S: Beats 64%
  • Hot-day cooling efficiencyEER2iFLOW: Beats 21%TK'S: Beats 47%

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

    iFLOW
    14%
    TK'S
    67%

  • Xcel CC

    iFLOW
    50%
    TK'S
    20%

  • CEE Advanced

    iFLOW
    0%
    TK'S
    0%

  • ENERGY STAR CC

    iFLOW
    0%
    TK'S
    0%

All-around best, ducted 2.5–3 tons

Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.

Showing Ducted, 2.5–3 tons (27,000–38,999 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

iFLOW

  1. 170HPIC36Awith ducted air handler 70C3036CAiFLOW3 tons · 35,000 Btu/h · DuctedCold-climate pick, score 78.6Meets Xcel CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.00 (COP at 5°F)
    Good
    Winter efficiency
    10.0 (HSPF2)
    Top 10%
    Cooling efficiency
    15.2 (SEER2)
    Below the middle
    Hot-day cooling
    10.0 (EER2)
    Below the middle
    53.0score / 100Heating 79 · Cooling 27
  2. 270HPIC30Awith ducted air handler 70C3036CAiFLOW2.5 tons · 30,000 Btu/h · DuctedCold-climate pick, score 67.8Meets Xcel CC
    Heat kept at 5°F
    82% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.85 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.7 (HSPF2)
    Great
    Cooling efficiency
    15.5 (SEER2)
    Below the middle
    Hot-day cooling
    10.5 (EER2)
    Below the middle
    52.6score / 100Heating 68 · Cooling 37
  3. 370HIPC36Swith ducted air handler 70C3036CAiFLOW3 tons · 35,000 Btu/h · DuctedCold-climate pick, score 54.6Meets Xcel CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.5 (HSPF2)
    Good
    Cooling efficiency
    15.2 (SEER2)
    Below the middle
    Hot-day cooling
    10.0 (EER2)
    Below the middle
    40.9score / 100Heating 55 · Cooling 27

TK'S

  1. 1T3C-30HFN1*TK'S2.5 tons · 28,000 Btu/h · DuctedCold-climate pick, score 57.4Meets CEE 2025, CEE 2026, Xcel CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    1.83 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.2 (HSPF2)
    Good
    Cooling efficiency
    21.0 (SEER2)
    Top 10%
    Hot-day cooling
    11.7 (EER2)
    Good
    71.5score / 100Heating 57 · Cooling 86
  2. 2T4C-36HFN1TK'SAlso listed as T4C-36HFN13 tons · 36,000 Btu/h · DuctedNot a cold-climate pick: keeps 64% of its heat at 5°FMeets none of the standards tracked here
    Heat kept at 5°F
    65% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.68 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.2 (HSPF2)
    Good
    Cooling efficiency
    20.0 (SEER2)
    Top 10%
    Hot-day cooling
    11.0 (EER2)
    Below the middle
    56.6score / 100Heating 44 · Cooling 69

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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