Heat pump model numbers starting UM
4 certified units whose model number starts UM, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 4 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| UMC18CN23STG1 | mini-split | 18,000 Btu (1.5-ton) | 3 | 9 |
| UMC24CN23STG1 | mini-split | 24,000 Btu (2-ton) | 3 | 9 |
| UMC36CN23STG1 | mini-split | 36,000 Btu (3-ton) | 3 | 9 |
| UMC48CN23STG1 | mini-split | 42,000 Btu (3.5-ton) | 3 | 9 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number