Heat pump model numbers starting 23
9 certified units whose model number starts 23, 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 |
|---|---|---|---|---|
| 23400-21S-230-O | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| 235SAN018**AA* | central | 18,000 Btu (1.5-ton) | 1 | 50 |
| 235SAN024**AA* | central | 24,000 Btu (2-ton) | 1 | 199 |
| 235SAN030**AA* | central | 30,000 Btu (2.5-ton) | 1 | 7 |
| 235SAN031**AA* | central | 30,000 Btu (2.5-ton) | 1 | 1 |
| 235SAN036**AA* | central | 36,000 Btu (3-ton) | 1 | 33 |
| 235SAN042**AA* | central | 42,000 Btu (3.5-ton) | 1 | 7 |
| 235SAN048**AA* | central | 48,000 Btu (4-ton) | 1 | 8 |
| 235SAN060**AA* | central | 54,000 Btu (4.5-ton) | 1 | 3 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number