Heat pump model numbers starting IS
2 certified units whose model number starts IS, 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 |
|---|---|---|---|---|
| IS12H/O4S41R | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| IS12H/O6S41R | mini-split | 12,000 Btu (1-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