These units don’t appear to have much in common. If you’re replacing one with the other, you’ll need to make some modifications to wall, unit or something in between with a plate or adapter curb.
| Match | VoltAire AT19 | VoltAire AT12 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 1.84" | 2.02" | +0.18" |
| Mismatch | VoltAire AT19 | VoltAire AT12 | Difference |
|---|---|---|---|
| Unit width | 21.62" | 16.39" | -5.23" |
| Unit height | 53.03" | 43.99" | -9.04" |
| Unit depth | 17" | 12.3" | -4.7" |
| Unit weight | 200 lbs | 94.6 lbs | -105.4 lbs |
| Supply Air | 19.01" x 8.81" | 13.5" x 11.75" | -5.51" x +2.94" |
| Return Air | 17.25" x 33.81" | 13.5" x 16.62" | -3.75" x -17.19" |
| Distance between Supply and Return | 0" | 11.6" | +11.6" |
| Distance from Return to bottom | 8.57" | 2" | -6.57" |