Bathroom Exhaust Question

Our master bath doesn’t have an exhaust fan and I’d like to add one to help with the humidity. It’s the primary bathroom of use upstairs and the 2nd full bath is on the other side of the wall.

Can I use a splitter to tie the other bathroom’s exterior vent to the new exhaust? If I did I’d put the splitter closest to the vent to help prevent blow back to the other bathroom. They’re both smaller bathrooms (50sqft and 100sqft).

Or is it just better to put it on it’s own exhaust vent?

player1 ,

Use an in-line fan in your attic to duct two rooms with one fan and one roof penetration

kiwifoxtrot ,
@kiwifoxtrot@lemmy.world avatar

Shouldn’t be a problem to tie them both together. You’ll want to add check valves on both lines before they join together. If you haven’t bought a fan yet, I highly recommend the Panasonic WhisperFit series. They pull a ton of air, are energy efficient, and are very quiet. I went from having condensation on my mirror after a shower to nothing at all.

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