WILLIS heat pumps: how do their ratings compare?
A typical WILLIS heat pump beats 63% of similar heat pumps (same size and type), which is well above average. WILLIS 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
Overall score
63%
of similar heat pumps beaten by its typical model
Well above averageWILLIS has no QMID (the manufacturer ID the 25C tax credit needs) on file, so it is not ranked against other brands. Based on 42 models with every rating.
- Efficiency on a 5°F dayCOP at 5°FBeats 44%
- Heating power kept at 5°FCapacity at 5°F vs 47°FBeats 71%
- Winter-long heating efficiencyHSPF2Beats 50%
- Summer-long cooling efficiencySEER2Beats 69%
- Hot-day cooling efficiencyEER2Beats 72%
Average (50%)
Each bar: the share of similar heat pumps a typical model beats on that rating.
Want WILLIS’s ranks and its models inside every size class? Switch to Advanced
Rebate standards
97%
meet CEE 2025 Tier 1, the level many utility rebates use.
28 models. All brands: 57%.
97%
meet Xcel Energy Colorado’s cold-climate rebate levels.
28 models. All brands: 53%.
10%
reach the cold-climate tier: full heating output and a COP of 2.1 or more at 5°F.
3 models. All brands: 3%.
WILLIS all-around best, by size
Balances heating (5°F output and efficiency, HSPF2) and cooling (SEER2, EER2), each rating against units their size.
Showing Ducted, 5 tons and up (57,000 Btu/h and up cooling). What size is my system?
WILLIS has no ducted, 5 tons and up model.
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 WILLIS’s ranks on each rating, its models inside every size and type, cold-weather curves and its newest certifications.
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