Heat pump model numbers starting SZ
18 certified units whose model number starts SZ, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 18 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| SZ09H525ZMO | mini-split | 9,000 Btu | 1 | 5 |
| SZ12H424ZMO | mini-split | 12,000 Btu (1-ton) | 1 | 5 |
| SZ12H525ZMO | mini-split | 12,000 Btu (1-ton) | 1 | 5 |
| SZ18H424ZMO | mini-split | 18,000 Btu (1.5-ton) | 1 | 6 |
| SZ18H525ZMO | mini-split | 18,000 Btu (1.5-ton) | 1 | 7 |
| SZ24H424ZMO | mini-split | 24,000 Btu (2-ton) | 1 | 5 |
| SZ24H525ZMO | mini-split | 24,000 Btu (2-ton) | 1 | 5 |
| SZ30H525ZMO | central | 30,000 Btu (2.5-ton) | 1 | 2 |
| SZ9H424ZMO | mini-split | 9,000 Btu | 1 | 5 |
| SZHW09WW115AHE | mini-split | 9,000 Btu | 1 | 1 |
| SZHW09WW230BBJ | mini-split | 9,000 Btu | 1 | 1 |
| SZHW12WW115BAG | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| SZHW12WW230BAJ | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| SZHW18WW230BBE | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| SZHW23WW230BJE | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| SZUN12WW230 | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| SZUN18WW230 | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| SZUN24WW230 | 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