Heat pump model numbers starting QO

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

One row per certified model number. All 27 in this group are listed; nothing is held back for a second page.

Model numbers starting QO
Model number	Type	Size class	Brands	Certified pairings
QO1-M2Z18-NC-NA	mini-split	9,000 Btu	1	2
QO1-M3Z27-NC*NA	mini-split	18,000 Btu (1.5-ton)	1	1
QO1-M3Z27-NC-NA	mini-split	24,000 Btu (2-ton)	1	1
QOM18H2BM2A	mini-split	18,000 Btu (1.5-ton)	1	3
QOM27H2BM3A	mini-split	24,000 Btu (2-ton)	1	3
QOM36H2BM4A	mini-split	36,000 Btu (3-ton)	1	3
QOM42H2BM5A	mini-split	42,000 Btu (3.5-ton)	1	3
QOS09H1BM0A	mini-split	9,000 Btu	1	1
QOS09H1BM5A	mini-split	9,000 Btu	1	2
QOS09H1XE5A	mini-split	9,000 Btu	1	1
QOS09H2BH0A	mini-split	9,000 Btu	1	5
QOS09H2BM0A	mini-split	9,000 Btu	1	1
QOS09H2BM5A	mini-split	9,000 Btu	1	2
QOS09H2XE5A	mini-split	9,000 Btu	1	2
QOS12H1BM0A	mini-split	12,000 Btu (1-ton)	1	1
QOS12H1BM5A	mini-split	12,000 Btu (1-ton)	1	2
QOS12H2BH0A	mini-split	12,000 Btu (1-ton)	1	4
QOS12H2BM0A	mini-split	12,000 Btu (1-ton)	1	2
QOS12H2BM5A	mini-split	12,000 Btu (1-ton)	1	2
QOS18H2BH0A	mini-split	18,000 Btu (1.5-ton)	1	4
QOS18H2BM0A	mini-split	18,000 Btu (1.5-ton)	1	2
QOS18H2BM5A	mini-split	18,000 Btu (1.5-ton)	1	2
QOS18H2XE5A	mini-split	18,000 Btu (1.5-ton)	1	2
QOS24H2BH0A	mini-split	24,000 Btu (2-ton)	1	4
QOS24H2BM0A	mini-split	24,000 Btu (2-ton)	1	2
QOS24H2BM5A	mini-split	24,000 Btu (2-ton)	1	2
QOS36H2BH0A	mini-split	30,000 Btu (2.5-ton)	1	2

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