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 AN04 | Difference |
|---|---|---|---|
| Distance from the top to Supply | 1.84" | 1.94" | +0.1" |
| Mismatch | VoltAire AT19 | VoltAire AN04 | Difference |
|---|---|---|---|
| Unit width | 21.62" | 14.13" | -7.49" |
| Unit height | 53.03" | 30" | -23.03" |
| Unit depth | 17" | 12.3" | -4.7" |
| Unit weight | 200 lbs | 65.6 lbs | -134.4 lbs |
| Supply Air | 19.01" x 8.81" | 11.54" x 11.8" | -7.47" x +2.99" |
| Return Air | 17.25" x 33.81" | 11.54" x 6.59" | -5.71" x -27.22" |
| Distance between Supply and Return | 0" | 7.65" | +7.65" |
| Distance from Return to bottom | 8.57" | 2.02" | -6.55" |