Heat pump model numbers starting OU
12 certified units whose model number starts OU, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 12 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| OUS06H/O6S4P | mini-split | 6,000 Btu | 1 | 2 |
| OUS09H/O4S4P | mini-split | 9,000 Btu | 1 | 4 |
| OUS09H/O6S4P | mini-split | 9,000 Btu | 1 | 5 |
| OUS12H/O4S4P | mini-split | 12,000 Btu (1-ton) | 1 | 4 |
| OUS12H/O6S4P | mini-split | 12,000 Btu (1-ton) | 1 | 6 |
| OUS18H/O4S4P | mini-split | 18,000 Btu (1.5-ton) | 1 | 4 |
| OUS18H/O6S4P | mini-split | 18,000 Btu (1.5-ton) | 1 | 7 |
| OUS24H/O4S4P | mini-split | 24,000 Btu (2-ton) | 1 | 4 |
| OUS24H/O6S4P | mini-split | 24,000 Btu (2-ton) | 1 | 4 |
| OUS36H/O6S4P | mini-split | 36,000 Btu (3-ton) | 1 | 1 |
| OUS48H/O4S41P | mini-split | 48,000 Btu (4-ton) | 1 | 1 |
| OUS48H/O6S4P | mini-split | 48,000 Btu (4-ton) | 1 | 3 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number