[MrFlorida]

I just take my hearing aids out, and the noise goes away.

[JMintzer]

Originally Posted by CJH929

Bernoulli’s principle at work.
Wind across vent opening creates less pressure above the vent. Pressure inside the home is momentarily higher and pushes up on the vent. The vent drops back down when the wind ceases.
Same principle involved with the aerodynamics that allow an aircraft to fly.

Look at the big brain on Brad! For the life of me, I couldn't remember Bernoulli's name!

Good call!

[tammy5912554@gmail.com]

I resolved the same issue yesterday. Took the old one down and replaced it. It looks modern, it’s thinner, it’s extremely quiet when it’s on and no flapping noise driving you crazy.
If you are interested in the info and guy to install it I am happy to pass the info along.

[Annie66]

Had the same problem in an previous home. I removed the light cover and light bulb. Took a few pieces of electrical tape (BTW, any tape would work) and placed it on the flapper. Don't use too much tape. It worked for me.

[Petersweeney]

Someone is selling a tree on the next thread - buy it and plant it close to exterior vent- it will slow the wind….