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

6 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.
1GW-12HP-115VORAMSONDwith ductless indoor unit GW-12HP-115VI	1 ton12,000 Btu/h · Non-ducted	1.79	75%	9.5	20.0	10.5	9,000	CEE 25CEE 26Xcel	1	218352806
2GW-12HP-230VORAMSONDwith ductless indoor unit GW-12HP-230VI	1 ton12,000 Btu/h · Non-ducted	1.80	76%	9.5	20.0	11.2	9,100	CEE 25CEE 26Xcel	1	218352807
3RDZ-18MHP-230V-ORAMSOND	1.5 tons18,000 Btu/h · Non-ducted	2.00	80%	10.5	24.0	13.0	16,000	CEE 25CEE 26Xcel	1	217563453
4RDZ-28MHP-230V-ORAMSOND	2.5 tons27,000 Btu/h · Non-ducted	2.00	71%	10.5	24.0	12.0	19,800	CEE 25CEE 26Xcel	1	217563454
5RDZ-36MHP-230V-ORAMSOND	3 tons35,000 Btu/h · Non-ducted	2.00	72%	10.0	22.5	11.1	26,000	CEE 25CEE 26Xcel	1	217563455
6RDZ-45MHP-230V-ORAMSOND	3.5 tons42,000 Btu/h · Non-ducted	2.00	71%	10.0	22.0	11.2	30,000	CEE 25CEE 26Xcel	1	217563456

Download CSV of the matching modelsAll 6 matching models, every page, in this order.