Panasonic heat pumps: how do their ratings compare?

A typical Panasonic heat pump beats 68% of similar heat pumps (same size and type), which is well above average. Panasonic has 29 heat pump models in this list.

Covers heat pumps sold new today (R-454B and R-32 refrigerant). See older R-410A models · Updated Oct 10, 2026

Overall score

68%

of similar heat pumps beaten by its typical model

Well above average

Panasonic has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 37 models with every rating.

Panasonic, rating by ratingStrongest on winter-long heating efficiency (beats 80%), weakest on hot-day cooling efficiency (beats 62%).

Efficiency on a 5°F dayCOP at 5°FBeats 64%
Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 72%
Winter-long heating efficiencyHSPF2Beats 80%
Summer-long cooling efficiencySEER2Beats 66%
Hot-day cooling efficiencyEER2Beats 62%

Average (50%)

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

Want Panasonic’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.

97%
meet CEE 2025 Tier 1, the level many utility rebates use.
28 models. All brands: 57%.
See them
90%
meet Xcel Energy Colorado’s cold-climate rebate levels.
26 models. All brands: 53%.
See them
21%
reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.
6 models. All brands: 3%.
See them

Top Panasonic cold-climate picks, by size

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?

9 of Panasonic’s 9 models of this size and type qualify.

1CU-XZ9AKUACwith ductless indoor unit CS-XZ9AKUAWPanasonic0.5 tons · 8,700 Btu/h · DuctlessKeeps 134% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
Heat kept at 5°F
134% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.32 (COP at 5°F)
Top 10%
Seasonal efficiency
12.0 (HSPF2)
Top 10%
94.9score / 100
2CU-2Z18ABUCPanasonic1.5 tons · 18,000 Btu/h · DuctlessKeeps 122% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
Heat kept at 5°F
122% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.15 (COP at 5°F)
Great
Seasonal efficiency
12.5 (HSPF2)
Top 10%
91.9score / 100
3CU-XZ18AKUACwith ductless indoor unit CS-XZ18AKUAWPanasonic1.5 tons · 17,200 Btu/h · DuctlessKeeps 103% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
Heat kept at 5°F
103% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.22 (COP at 5°F)
Great
Seasonal efficiency
11.7 (HSPF2)
Top 10%
90.5score / 100
4CU-XZ12AKUACwith ductless indoor unit CS-XZ12AKUAWPanasonic1 ton · 11,500 Btu/h · DuctlessKeeps 119% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
Heat kept at 5°F
119% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.11 (COP at 5°F)
Great
Seasonal efficiency
11.7 (HSPF2)
Top 10%
90.0score / 100
5CU-XZ15AKUACwith ductless indoor unit CS-XZ15AKUAWPanasonic1 ton · 14,700 Btu/h · DuctlessKeeps 104% of its heat at 5°FMeets CEE 2025, CEE 2026, CEE Advanced, Xcel CC, DOE CCHP, ENERGY STAR CC
Heat kept at 5°F
104% (Capacity at 5°F vs 47°F)
Top 10%
Efficiency at 5°F
2.14 (COP at 5°F)
Great
Seasonal efficiency
12.0 (HSPF2)
Top 10%
88.4score / 100

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 Panasonic’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.

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