Heat pump model numbers starting FX
13 certified units whose model number starts FX, 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 |
|---|---|---|---|---|
| FXD-ACD36 | central | 24,000 Btu (2-ton) | 1 | 2 |
| FXD-ACD60 | central | 48,000 Btu (4-ton) | 1 | 2 |
| FXE30HP230V1R32AO | central | 24,000 Btu (2-ton) | 1 | 2 |
| FXE36HP230V1R32AO | central | 24,000 Btu (2-ton) | 1 | 2 |
| FXE60HP230V1R32AO | central | 48,000 Btu (4-ton) | 1 | 2 |
| FXU12HP230V1R32AO | central | 18,000 Btu (1.5-ton) | 1 | 1 |
| FXU18HP230V1R32AO | central | 18,000 Btu (1.5-ton) | 1 | 2 |
| FXU24HP230V1R32AO | central | 24,000 Btu (2-ton) | 1 | 1 |
| FXU36HP230V1R32AO | central | 24,000 Btu (2-ton) | 1 | 6 |
| FXU36HP230V1R45AO | central | 24,000 Btu (2-ton) | 1 | 2 |
| FXU48HP230V1R32AO | central | 48,000 Btu (4-ton) | 1 | 1 |
| FXU60HP230V1R32AO | central | 48,000 Btu (4-ton) | 1 | 4 |
| FXU60HP230V1R45AO | central | 48,000 Btu (4-ton) | 1 | 2 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number