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Custom Comfort vs Panasonic: heat pump ratings compared

Against heat pumps of the same size and type, a typical Custom Comfort model beats 71% and a typical Panasonic model 68%. Custom Comfort rates slightly higher overall.

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

Custom Comfort

71%

of similar heat pumps beaten by its typical model

Well above average

28 models listed

Panasonic

68%

of similar heat pumps beaten by its typical model

Well above average

29 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°FCustom Comfort: Beats 64%Panasonic: Beats 64%
  • Heating power kept at 5°FCapacity at 5°F vs 47°FCustom Comfort: Beats 71%Panasonic: Beats 72%
  • Winter-long heating efficiencyHSPF2Custom Comfort: Beats 84%Panasonic: Beats 80%
  • Summer-long cooling efficiencySEER2Custom Comfort: Beats 69%Panasonic: Beats 66%
  • Hot-day cooling efficiencyEER2Custom Comfort: Beats 67%Panasonic: Beats 62%

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

    Custom Comfort
    96%
    Panasonic
    97%

  • Xcel CC

    Custom Comfort
    100%
    Panasonic
    90%

  • CEE Advanced

    Custom Comfort
    4%
    Panasonic
    21%

  • ENERGY STAR CC

    Custom Comfort
    100%
    Panasonic
    79%

All-around best, ductless 2 tons

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

Showing Ductless, 2 tons (21,000–26,999 Btu/h cooling). What size is my system?

Custom Comfort

  1. 1CCOESBSZ24HPwith ductless indoor unit CCOXHBWM24Custom Comfort2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 84.5Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    78% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.54 (COP at 5°F)
    Top 10%
    Winter efficiency
    11.7 (HSPF2)
    Top 10%
    Cooling efficiency
    23.0 (SEER2)
    Great
    Hot-day cooling
    14.0 (EER2)
    Top 10%
    86.8score / 100Heating 85 · Cooling 89
  2. 2CCOXHBSZ24HPwith ductless indoor unit CCOXHBWM24Custom Comfort2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 89.4Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    83% (Capacity at 5°F vs 47°F)
    Good
    Efficiency at 5°F
    2.34 (COP at 5°F)
    Top 10%
    Winter efficiency
    13.5 (HSPF2)
    Top 10%
    Cooling efficiency
    21.0 (SEER2)
    Below the middle
    Hot-day cooling
    13.0 (EER2)
    Great
    76.4score / 100Heating 88 · Cooling 65

Panasonic

  1. 1CU-4Z24BBUCPanasonic2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 85.3Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    113% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.08 (COP at 5°F)
    Good
    Winter efficiency
    11.4 (HSPF2)
    Top 10%
    Cooling efficiency
    24.0 (SEER2)
    Top 10%
    Hot-day cooling
    13.5 (EER2)
    Great
    87.8score / 100Heating 85 · Cooling 90
  2. 2CU-3Z22ABUCPanasonic2 tons · 22,000 Btu/h · DuctlessCold-climate pick, score 90.9Meets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
    Heat kept at 5°F
    105% (Capacity at 5°F vs 47°F)
    Top 10%
    Efficiency at 5°F
    2.27 (COP at 5°F)
    Great
    Winter efficiency
    10.7 (HSPF2)
    Great
    Cooling efficiency
    24.5 (SEER2)
    Top 10%
    Hot-day cooling
    12.8 (EER2)
    Good
    87.4score / 100Heating 91 · Cooling 84
  3. 3CU-YM24CBUCwith ductless indoor unit CS-YM24CKUWPanasonic2 tons · 24,000 Btu/h · DuctlessCold-climate pick, score 73.7Meets CEE 2025, CEE 2026, Xcel CC, ENERGY STAR CC
    Heat kept at 5°F
    71% (Capacity at 5°F vs 47°F)
    Below the middle
    Efficiency at 5°F
    2.15 (COP at 5°F)
    Great
    Winter efficiency
    10.0 (HSPF2)
    Good
    Cooling efficiency
    23.5 (SEER2)
    Top 10%
    Hot-day cooling
    13.0 (EER2)
    Great
    74.3score / 100Heating 64 · Cooling 85

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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