These units dimensions are physically identical. Replacing one for the other shouldn’t be any problem just make sure to double check your capacity and voltages.
| Match | Bard 18WH4 | Bard 20WA1 | Difference |
|---|---|---|---|
| Unit width | 32.25" | 32.25" | 0" |
| Unit height | 69.375" | 69.375" | 0" |
| Unit depth | 13.5" | 13.5" | 0" |
| Unit weight | 315 lbs | 315 lbs | 0 lbs |
| Supply Air | 20" x 8" | 20" x 8" | 0" |
| Return Air | 20" x 12" | 20" x 12" | 0" |
| Distance from the top to Supply | 1.375" | 1.375" | 0" |
| Distance between Supply and Return | 20.5" | 20.5" | 0" |
| Distance from Return to bottom | 27.5" | 27.5" | 0" |
| Mismatch | Bard 18WH4 | Bard 20WA1 | Difference |
|---|---|---|---|
| No mismatches in measurement | - | - | - |