Explore certified heat pump models

Filter every outdoor model in this refrigerant group. Each row’s numbers come from one representative AHRI certification (its best COP at 5°F). Sorting by a rating leaves out models without that rating.

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ExploreData as of Oct 11, 2026updated Oct 11, 2026 · sources

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Duct type: “Ducted (incl. mixed)” lists every model with a ducted or a mixed (multi-zone) certification, since a mixed system can serve ducted heads; “Ductless (incl. mixed)” every model with a ductless or a mixed one. The rankings compare mixed pairings with ductless units. Why

WILLIS(remove filter)

29 models

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# · Outdoor model	Size · type	COP@5°F	Cap. 5/47	HSPF2	SEER2	EER2	Btu/h @5°F	Meets	Combos	AHRI ref.
26PUHW18KR32-OWILLIS · HEATFINITYwith ductless indoor unit PUHW18KR32-I	1.5 tons18,000 Btu/h · Ducted and non-ducted	1.90	81%	9.0	24.5	13.7	14,600	CEE 25CEE 26XcelES CC	8	217007961
27PUHW24KR32-OWILLIS · HEATFINITYwith ductless indoor unit PUHW24KR32-I	2 tons22,000 Btu/h · Ducted and non-ducted	2.11	79%	10.0	26.0	13.7	19,000	CEE 25CEE 26XcelES CC	4	217007962
28PUHW30KR32-OWILLISwith ductless indoor unit PUHW30KR32-I	2.5 tons30,000 Btu/h · Non-ducted	1.80	77%	9.0	22.0	11.0	23,000	CEE 25CEE 26Xcel	1	217007957
29PUHW36KR32-OWILLIS · CENTURIONwith ductless indoor unit PUHW36KR32-I	3 tons33,600 Btu/h · Non-ducted	1.80	72%	8.5	21.0	12.0	24,600	CEE 25CEE 26XcelES CC	1	217007958

Download CSV of the matching modelsAll 29 matching models, every page, in this order.