What are you trying to exhaust?
Moisture (shower or bath) or just a toilet - smell?
How far to an outside wall?
Moisture (shower or bath) or just a toilet - smell?
How far to an outside wall?
There's an excellent chance that would be prohibited by code, and a bad idea for the reason you said.I have power vented water heater and I am afraid to tie into that because of backflow concerns.
You might not be able to tie it in anywhere; best bet would be to extend the duct and go out a wall, or through the rim joist if your basement is full depth. (And if code allows you to do that.. you can probably ask the inspector for a recommendation).How and where can I tie this exhaust into