Heat pump model numbers starting HM
13 certified units whose model number starts HM, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 13 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| HM18 | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| HM27 | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| HMH72B341 | central | 36,000 Btu (3-ton) | 6 | 5,046 |
| HMZ18H424ZMO | mini-split | 18,000 Btu (1.5-ton) | 1 | 3 |
| HMZ18H525ZMO | mini-split | 18,000 Btu (1.5-ton) | 1 | 3 |
| HMZ24H424ZMO | mini-split | 24,000 Btu (2-ton) | 1 | 3 |
| HMZ27H525ZMO | mini-split | 30,000 Btu (2.5-ton) | 1 | 3 |
| HMZ28H424ZMO | mini-split | 30,000 Btu (2.5-ton) | 1 | 3 |
| HMZ36H424ZMO | mini-split | 36,000 Btu (3-ton) | 1 | 3 |
| HMZ36H525ZMO | mini-split | 36,000 Btu (3-ton) | 1 | 3 |
| HMZ48H424ZMO | mini-split | 54,000 Btu (4.5-ton) | 1 | 3 |
| HMZ48H525ZMO | mini-split | 48,000 Btu (4-ton) | 1 | 3 |
| HMZ55H525ZMO | mini-split | 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