Heat pump model numbers starting IN
5 certified units whose model number starts IN, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 5 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| INM-27K-O | mini-split | 24,000 Btu (2-ton) | 1 | 2 |
| INM-36K-O | mini-split | 36,000 Btu (3-ton) | 1 | 2 |
| INS-12K-O | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| INS-18K-O | mini-split | 18,000 Btu (1.5-ton) | 1 | 2 |
| INS-24K-O | mini-split | 24,000 Btu (2-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