Bathroom Exhaust Fan Vent duct replacement

It’s an easy DIY. Changed one this weekend. Handyman is who I’d call if I wasn’t at all handy

Thanks, I’ll look around. I do a lot of stuff, but don’t feel like crawling around the atttic.

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roomside changes only

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The pictured fan unit requires a 4" duct that has to exhaust somewhere. Going through the attic and roof might be simpler.

The only tricky part is getting a no-leak roof penetration. If a roof vent is needed find a roof-repair service.

I had a general handyman install mine. Did not DIY because we wanted to run the duct to the soffit, and it was a PITA location plus I needed to run an extra wire.

He did tell me next time he has to do this type of job, he'll start charging a little extra and just "accidently" go through the ceiling and offer to fix that for free

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If he's replacing an existing unit then he's more than likely got an exhaust duct already that he just attaches to the new unit. That's pretty easy to do thru the 7.5"+ cut out the existing fan is sitting in.

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I did this 2 years ago in our half bath. We had an existing fan in place, and wife wanted to get rid of the wall mount sconce lights and have just an overhead light, so I think I bought that exact Broan model. It was a simple install. Remove old fan, cut a little drywall on the ceiling out for the wider unit, hook up to existing ductwork and done. Took about 30-45 minutes tops, from turning the breaker off to turning it back on at the end.

Now if you are doing a new install and have to run ductwork, yeah that's the attic and early March would be a great time to do it, rather than July/August.

Ok, great , a little more information. When building a house, the plumber handles vent pipes through the roof, also vent lines for bathroom vents. They also handle vents for gas furnaces.
They run these lines up to or through the roof. The roofers handle it from there, using the right products for roof applications.

With that, a good friend had squirrels in his attic, getting in through a roof vent for his gas cooktop.


I gave him this guys number, once we got the squirrels out. He got the vent needed, replaced and sealed.


Carlos Malena
225-284-0208
His wife usually answers and books the jobs.
Tell her Dave with Gatway Roofing, recommend Carlos.
Great work at more than fair prices.

Carlos has replaced decking, flashing around a leaking chimney. He’s very good at what he does.


Let me know if you need anything else.

Thank you friend!

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