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

Buck Cool(remove filter)

5 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.
1UB1MSHQCO09Buck Cool · Hi MULTI Xtremewith ductless indoor unit UB1MSHQCW09	1 ton9,000 Btu/h · Non-ducted	2.09	81%	9.0	18.5	12.8	7,280	CEE 25CEE 26XcelES CC	1	208287570
2UB1MSHQCO12Buck Cool · HiULTRAwith ductless indoor unit UB1MSHQCW12	1 ton12,000 Btu/h · Non-ducted	1.86	81%	9.5	21.7	12.5	9,660	CEE 25CEE 26Xcel	1	208287572
3UB1MSHQCO18Buck Cool · Hi MULTI Xtremewith ductless indoor unit UB1MSHQCW18	1.5 tons18,000 Btu/h · Non-ducted	1.87	77%	8.6	22.5	13.0	13,770	CEE 25CEE 26XcelES CC	1	208287574
4UB1MSHQCO24Buck Cool · Hi MULTI Xtremewith ductless indoor unit UB1MSHQCW24	2 tons23,000 Btu/h · Non-ducted	2.13	89%	8.6	20.5	12.2	20,500	CEE 25CEE 26XcelES CC	1	208287576
5UB1MSHQCO36Buck Coolwith ductless indoor unit UB1MSHQCW36	3 tons35,000 Btu/h · Non-ducted	—	—	7.5	16.5	8.4	—	None	1	208287621

Download CSV of the matching modelsAll 5 matching models, every page, in this order.