Why Is My Attic Fan So Loud

If the switch on temperature is set too low you can bet that the fan will run all summer long and create a noisy disturbance.

Why is my attic fan so loud.

The blower wheel and housing will also squeal when they malfunction. Attic fan making loud noise. The fan should have a thermostat already. This can cause the fan to start making constant noise and in some cases even a loud squealing sound.

Both of these are easily checked just remove the grill and look at the blower wheel. When the fan is turned on it draws attic insulation down from the top of the ceiling into the blower wheel. It should be located about 2 ft from the fan and has a. Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system.

While they may move a lot of air they can also be loud in general. Remove the current worn out bearings and replace them. Why is my attic fan so loud. Attic fans rattling and shaking are quite common and it s a problem faced by many homeowners who have fans.

This will definitely produce noise while the blades are rotating. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. Due to regular wear these bearings can use or lose their lubrication capacity. Shut off the fan before examining the blades and see if there s a problem or not.

If your fan has only recently started making noise it may be a sign that the motor is going bad. If you have a closed off attic open a window at the other end or install one to solve this problem. This will give the fan the airflow it needs. If the fan blades are imbalanced or bent they can hit against one another or against other parts of the fan.

Insulation will upset the balance of the blower wheel creating noise and reducing air flow. Less expensive fans usually have high speed fan motors yet very small turbines. On the other hand fans with larger fan blades and more powerful motors tend to be quieter. Attic fans also have small ball bearings that help lubricate the fan s movement.

It looks like a little metal box with a shaft that you turn with a screwdriver to set the temp. If your attic fan seems to be running constantly it would be a good idea to bring in a professional to check it out and make sure it s still working properly. For some units this sound is normal upon start up. This happens when the fan doesn t receive enough air.