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

ENVI(remove filter)

8 models

Sorted by manufacturer and model.

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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.
1ECSO19A36FL230AENVIwith ducted air handler ECSI19A36FL230A	3 tons34,000 Btu/h · Ducted	2.00	64%	8.3	19.0	11.5	21,600	CEE 25CEE 26	1	217559793
2ECSO19A60FL230AENVIwith ducted air handler ECSI19A60FL230A	4.5 tons53,500 Btu/h · Ducted	2.24	74%	9.5	19.0	11.5	40,000	CEE 25CEE 26Xcel	1	217559792
3EMSO188S12ZE230AENVI · ZENOwith ductless indoor unit EMSI188S12ZE230A	1 ton12,000 Btu/h · Non-ducted	1.75	79%	8.0	17.0	8.6	9,500	None	1	217559801
4EMSO188S18ZE230AENVI · ZENOwith ductless indoor unit EMSI188S18ZE230A	1.5 tons18,000 Btu/h · Non-ducted	1.75	56%	8.2	18.0	10.3	10,000	None	1	217559803
5EMSO188S24ZE230AENVIwith ductless indoor unit EMSI188S24ZE230A	2 tons24,000 Btu/h · Non-ducted	1.75	70%	8.5	19.0	11.9	15,700	CEE 25CEE 26Xcel	1	217559802
6EMSO188S9ZE230AENVI · ZENOwith ductless indoor unit EMSI188S9ZE230A	1 ton9,100 Btu/h · Non-ducted	1.85	76%	8.6	18.8	12.3	7,600	CEE 25CEE 26Xcel	1	217559800
7EMSO21M18ZE230AENVI · M-Series	1.5 tons18,000 Btu/h · Ducted and non-ducted and mixed (multi-zone)	2.00	77%	10.0	21.0	12.0	13,800	CEE 25CEE 26Xcel	3	217559794
8EMSO21M24ZE230AENVI · M-Series	2 tons24,000 Btu/h · Ducted and non-ducted and mixed (multi-zone)	2.00	90%	10.0	21.0	13.3	21,600	CEE 25CEE 26Xcel	3	217559795

Download CSV of the matching modelsAll 8 matching models, every page, in this order.