Heat pump model numbers starting 45
9 certified units whose model number starts 45, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 9 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| 454-09-O-DA | mini-split | 9,000 Btu | 1 | 1 |
| 454-12-O-DA | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| 454-18-O-DA | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| 454-24-O-DA | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| 454-24-O-PS | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| 454-28-4Z-O | mini-split | 24,000 Btu (2-ton) | 1 | 3 |
| 454-36-5Z-O | mini-split | 36,000 Btu (3-ton) | 1 | 3 |
| 454-48-6Z-O | mini-split | 42,000 Btu (3.5-ton) | 1 | 3 |
| 454-9-O-DA | mini-split | 9,000 Btu | 1 | 1 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number