How do i stop the cold air from coming in thru bathroom vent?
by
Teacup8885
I took down the ceiling vent in my bathroom to clean it n cple air was just pouring in. Even with vent in place, it blows out cold air.. thanx in advance!
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This site has some good info. https://www.askthebuilder.com/bathroom-exhaust-fan-leaks-cold-air/
Sounds like your vent has a stuck baffle or no baffle at all. It’s a little flap that only allows air to go one way.
Also check that the vent fan duct, if it travels through your attic, is insulated. Otherwise you can get condensation which will drip down onto attic floor or ceilings below.