Forum Title: Ceiling fan vent question
I’m pretty sure the answer is no, but it doesn't hurt to ask: I am installing a ceiling fan/light in our upstairs bathroom. The fan vents into the attic. I can run the duct to a soffit vent, but the roof line is part of a dormer there, so it is a really shallow angle and working in there will not be fun. Coincidentally, the main vent stack is about five feet from the fan. I can’t (or shouldn’t) vent the fan into the main stack, right?—no matter how much more convenient it will make the install? Thanks, tom
Category: Plumber Post By: RICHARD DAVIS (Harrisburg, PA), 07/22/2017

Vent stack is not for those kinds of vents. I ran into this issue before where a new home owner couldn't figure out why their bathroom always smelled like crap. Hopped in the attic and sure enough the genius before them tied the duct into a plumbing vent.

- ZACHARY SANDOVAL (Dallas, TX), 10/11/2017

na, you cant do that, sewer gas would come into the bathroom when fan not on. making your wife really mad, get a roof top dryer vent flashing, run your fart fan duct into it

- HILDA GRIFFITH (Skokie, IL), 10/12/2017

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