Heat pump model numbers starting M4

31 certified units whose model number starts M4, out of every unit in the A to Z. Updated Oct 17, 2026.

One row per certified model number. All 31 in this group are listed; nothing is held back for a second page.

Model numbers starting M4
Model number	Type	Size class	Brands	Certified pairings
M4H27HN/O6S4P	mini-split	30,000 Btu (2.5-ton)	1	3
M4H27HS/O6S4P	mini-split	30,000 Btu (2.5-ton)	1	3
M4H36H/O4S4P	mini-split	36,000 Btu (3-ton)	1	3
M4OD30-24HFN10-M1D	mini-split	24,000 Btu (2-ton)	3	5
M4OD30-27HFN10-M1	mini-split	24,000 Btu (2-ton)	1	6
M4OD30-27HFN10-M1-D	mini-split	24,000 Btu (2-ton)	1	6
M4OD30-27HFN10-M1D	mini-split	24,000 Btu (2-ton)	1	7
M4OD30-27HFN10-M1D-D	mini-split	24,000 Btu (2-ton)	1	6
M4OD30-27HFN10-M1P	mini-split	24,000 Btu (2-ton)	1	3
M4OD30-27HFPN10-M1D	mini-split	24,000 Btu (2-ton)	1	3
M4OD30-36HFN8-M1	mini-split	36,000 Btu (3-ton)	1	3
M4OD31-24HFN10-M1XD	mini-split	24,000 Btu (2-ton)	1	3
M4OD31-27HFN10-M1X	mini-split	30,000 Btu (2.5-ton)	1	6
M4OD31-27HFN10-M1X-D	mini-split	30,000 Btu (2.5-ton)	1	6
M4OD31-27HFN10-M1XD	mini-split	30,000 Btu (2.5-ton)	1	6
M4OD31-27HFN10-M1XD-D	mini-split	30,000 Btu (2.5-ton)	1	6
M4OD31-27HFN8-M1XD	mini-split	30,000 Btu (2.5-ton)	1	3
M4OG-30HFN1-M	mini-split	30,000 Btu (2.5-ton)	1	6
M4OG-36HFN1-M	mini-split	36,000 Btu (3-ton)	4	14
M4OG-36HFN1-M-L	mini-split	36,000 Btu (3-ton)	1	3
M4OI-36HFN1-M	mini-split	36,000 Btu (3-ton)	2	9
M4OI-36HFN1-M-L	mini-split	36,000 Btu (3-ton)	1	3
M4OX630-36HFN1-M1X	mini-split	36,000 Btu (3-ton)	3	12
M4S27HN/O6S4P	mini-split	24,000 Btu (2-ton)	1	3
M4S27HS/O6S4P	mini-split	24,000 Btu (2-ton)	1	3
M4S36H/O4S4P	mini-split	36,000 Btu (3-ton)	1	1
M4THM1918A12N	mini-split	18,000 Btu (1.5-ton)	2	2
M4THM1924A13N	mini-split	24,000 Btu (2-ton)	2	2
M4THM1930A14N	mini-split	30,000 Btu (2.5-ton)	2	2
M4THM1936A14N	mini-split	36,000 Btu (3-ton)	2	2
M4THM1942A15N	mini-split	36,000 Btu (3-ton)	2	2

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