This will definitely produce noise while the blades are rotating.
Dryer vent in attic fan noise.
It gets stuck in the fan blades.
The problem with attics the attic is usually colder than the rest of the house during the winter and that can create a problem for a dryer vent.
If the dryer ducting is going to be more than that add a booster fan and the fan can help move the air that much further.
During workdays would leave air conditioner off when leaving in the morning.
I can feel some water around the metal wrapping of the vent where there is an opening.
Blade is made of thin metal sheets in most of the household fans.
Attic fans also have small ball bearings that help lubricate the fan s movement.
Due to excessive pressure or sudden strikes these blades might get bent or damaged.
Temp 92 f at 5pm.
After attic fan installation ac still off during day.
The attic fan kept my house cooler by 8f compared to pre fan installation days.
Remove the screws holding the vent in place.
Lift up the edges of the surrounding roof shingles so you can see the edges of the vent.
This was observed on numerous days following the installation.
Temp 84f at 5pm.
If so the rotating blade will create some noise and the airflow outcome won t be as expected also.
In order to get rid of the hum you need to either operate the fan at a low speed or replace the fan with a new one that has more blades.
Lint in the vent is the prime cause of vent fires.
And there is no exception with the attic fans as well.
This can cause the fan to start making constant noise and in some cases even a loud squealing sound.
I have my fan vented out through the roof but near the inside of the roof in my attic the vent leaks a bit and condensation gets on the wood and a bit down in the insulation around where the vent goes out.
Due to regular wear and tear these bearings can become worn out or lose their lubrication ability.
The warm moist air inside the vent tends to.
Shut off the fan before examining the blades and see if there s a problem or not.
Remove the current worn out bearings and replace them.
The most serious problem is the accumulation of lint along the sides of the pipes and at the end.
Climb onto the roof and locate the vent that is causing the noise.
Check for imbalanced or bent blades.
If the fan blades are imbalanced or bent they can hit against one another or against other parts of the fan.
Cut through any sealer that may be present.
The dryer fan is capable of moving air efficiently x number of feet.