Heat pump model numbers starting SO
6 certified units whose model number starts SO, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 6 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| SOV18H2BA | central | 18,000 Btu (1.5-ton) | 1 | 3 |
| SOV24H2BA | central | 24,000 Btu (2-ton) | 1 | 10 |
| SOV30H2BA | central | 30,000 Btu (2.5-ton) | 1 | 1 |
| SOV36H2BA | central | 36,000 Btu (3-ton) | 1 | 3 |
| SOV48H2BA | central | 42,000 Btu (3.5-ton) | 1 | 4 |
| SOV60H2BA | central | 54,000 Btu (4.5-ton) | 1 | 1 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number