Heat pump model numbers starting OT
2 certified units whose model number starts OT, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 2 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| OTD-H36DMR3-B01/SE180 | central | 24,000 Btu (2-ton) | 1 | 2 |
| OTD-H60DMR3-C01/SE180 | central | 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