Often a stiff wind will open vent dampers causing them to periodically clang shut.
Attic vent making noise.
Attic fans rattling and shaking are quite common and it s a problem faced by many homeowners who have fans.
If so the rotating blade will create some noise and the airflow outcome won t be as expected also.
4 ways to quiet a noisy attic ceiling fan.
Blade is made of thin metal sheets in most of the household fans.
Heating ducts as they cool also make banging noises as do.
Due to excessive pressure or sudden strikes these blades might get bent or damaged.
A loose attic vent or shutter on a window can make a banging noise in the wind.
Replace the fan itself.
The vent hood ducts through a rigid or flexible pipe to a cap on the roof or side of your home.
And there is no exception with the attic fans as well.
This happens when the fan doesn t receive enough air.
A loose shutter on an attic window or loosened attic vents can cause a banging sound if it s windy as can branches hitting the roof.
When you hear a banging coming from the attic and are trying to determine the cause you are most likely dealing with one of these four animals.
If the noise drives you crazy new spring loaded backdraft dampers 9 to 30 depending on the size should solve the problem.
This will give the fan the airflow it needs.
If the fan makes a constant metal clanking noise in all probability the fan blades are imbalanced.