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J-KU heat pumps: how do their ratings compare?

A typical J-KU heat pump beats 62% of similar heat pumps (same size and type), which is well above average. J-KU has 10 heat pump models in this list.

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

Overall score

62%

of similar heat pumps beaten by its typical model

Well above average

J-KU has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 10 models with every rating.

J-KU, rating by ratingStrongest on hot-day cooling efficiency (beats 71%), weakest on winter-long heating efficiency (beats 48%).
  • Efficiency on a 5°F dayCOP at 5°FBeats 49%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 66%
  • Winter-long heating efficiencyHSPF2Beats 48%
  • Summer-long cooling efficiencySEER2Beats 67%
  • Hot-day cooling efficiencyEER2Beats 71%

Average (50%)

Each bar: the share of similar heat pumps a typical model beats on that rating.

Want J-KU’s ranks and its models inside every size class? Switch to Advanced

Rebate standards

Share of this brand’s models that meet the efficiency levels rebate programs use. Programs can have other rules too.

  • 100%

    meet CEE 2025 Tier 1, the level many utility rebates use.

    10 models. All brands: 48%.

    See them

  • 90%

    meet Xcel Energy Colorado’s cold-climate rebate levels.

    9 models. All brands: 38%.

    See them

  • 0%

    reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.

    None of its models yet. All brands: 1%.

J-KU all-around best, by size

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

Showing Ductless, Up to 1.5 tons (under 21,000 Btu/h cooling), the most-listed ducted size. Pick yours above. What size is my system?

6 of J-KU’s 6 models of this size and type have all five ratings.

  1. 1JKS09HP230V1XCwith ductless indoor unit JKS09HP230V1XEJ-KU1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 83.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    88% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.36 (COP at 5°F)
    Top 10%
    Winter efficiency
    10.5 (HSPF2)
    Great
    Cooling efficiency
    27.5 (SEER2)
    Top 10%
    Hot-day cooling
    15.5 (EER2)
    Top 10%
    89.2score / 100Heating 83 · Cooling 95
  2. 2JKS12HP230V1XCwith ductless indoor unit JKS12HP230V1XEJ-KU1 ton · 12,000 Btu/h · DuctlessCold-climate pick, score 80.0Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    93% (Capacity at 5°F vs 47°F)
    Great
    Efficiency at 5°F
    2.41 (COP at 5°F)
    Top 10%
    Winter efficiency
    9.8 (HSPF2)
    Good
    Cooling efficiency
    23.5 (SEER2)
    Great
    Hot-day cooling
    15.4 (EER2)
    Top 10%
    83.4score / 100Heating 80 · Cooling 87
  3. 3JKS-18H2HP-M2OJ-KU1.5 tons · 18,000 Btu/h · DuctlessCold-climate pick, score 60.5Meets 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
    1.84 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.5 (HSPF2)
    Good
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    12.5 (EER2)
    Below the middle
    54.5score / 100Heating 61 · Cooling 49
  4. 4JKS-09H2HP-ES(O)with ductless indoor unit JKS-09H2HP-ES(I)J-KU1 ton · 9,000 Btu/h · DuctlessCold-climate pick, score 34.3Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    70% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    9.0 (HSPF2)
    Below the middle
    Cooling efficiency
    22.0 (SEER2)
    Good
    Hot-day cooling
    13.7 (EER2)
    Great
    53.5score / 100Heating 34 · Cooling 73
  5. 5JKS-18H2HP-ES(O)with ductless indoor unit JKS-18H2HP-ES(I)J-KU1.5 tons · 18,000 Btu/h · DuctlessNot a cold-climate pick: keeps 66% of its heat at 5°FMeets CEE 2025, CEE 2026, ENERGY STAR CC
    Heat kept at 5°F
    66% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    1.80 (COP at 5°F)
    Below the middle
    Winter efficiency
    8.6 (HSPF2)
    Below the middle
    Cooling efficiency
    22.5 (SEER2)
    Good
    Hot-day cooling
    13.0 (EER2)
    Good
    46.8score / 100Heating 24 · Cooling 70

These are certified test ratings, not a recommendation for your home. The right size comes from a load calculation by a contractor.

What to do next

The advanced view has J-KU’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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