Heat pump model numbers starting FW
18 certified units whose model number starts FW, 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 |
|---|---|---|---|---|
| FWP14AY42AJ2N | central | 42,000 Btu (3.5-ton) | 1 | 8 |
| FWP14AY48AJ2N | central | 48,000 Btu (4-ton) | 1 | 1 |
| FWP14AY60AJ2N | central | 54,000 Btu (4.5-ton) | 1 | 17 |
| FWP14AZ36AJ2N | central | 36,000 Btu (3-ton) | 1 | 1 |
| FWP15AY18AJ2N | central | 18,000 Btu (1.5-ton) | 1 | 9 |
| FWP15AY24AJ2N | central | 24,000 Btu (2-ton) | 1 | 5 |
| FWP15AY30AJ2N | central | 30,000 Btu (2.5-ton) | 1 | 1 |
| FWP15AY36AJ2N | central | 36,000 Btu (3-ton) | 1 | 134 |
| FWP15AY42AJ2N | central | 42,000 Btu (3.5-ton) | 1 | 127 |
| FWP15AY48AJ2N | central | 48,000 Btu (4-ton) | 1 | 1 |
| FWP15AY60AJ2N | central | 54,000 Btu (4.5-ton) | 1 | 17 |
| FWP15AZ18AJ2N | central | 18,000 Btu (1.5-ton) | 1 | 42 |
| FWP15AZ24AJ2N | central | 24,000 Btu (2-ton) | 1 | 71 |
| FWP15AZ30AJ2N | central | 30,000 Btu (2.5-ton) | 1 | 90 |
| FWP15AZ36AJ2N | central | 36,000 Btu (3-ton) | 1 | 38 |
| FWP15AZ42AJ2N | central | 42,000 Btu (3.5-ton) | 1 | 10 |
| FWP15AZ48AJ2N | central | 48,000 Btu (4-ton) | 1 | 2 |
| FWP15AZ60AJ2N | central | 54,000 Btu (4.5-ton) | 1 | 4 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number