Attic Fan Making Screeching Noise

Rattling noises rattling is a common noise with air conditioners as the various fasteners throughout the machine can eventually come loose.

Attic fan making screeching noise.

For some units this sound is normal upon start up. Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system. In addition to hearing consistent scratching sounds another important sign you have bats in the attic is high pitched screeches. Turn the fan on w o blades to see if the plate wobbles and then replace blades.

Attic fans also have small ball bearings that help lubricate the fan s movement. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. If you hear rattling start by checking the screws or. Though bats are typically quiet nocturnal animals they do make high pitched screeching sounds around dusk or dawn.

This will definitely produce noise while the blades are rotating. If this is the problem you ll probably hear the screeching the entire time your air conditioner is running. And there is no exception with the attic fans as well. Sometimes the plate the blades mount on can come loose.

Due to excessive pressure or sudden strikes these blades might get bent or damaged. You may need to remove all fan blades level the mounting plate usually one set screw tightens against a rotating shaft. Shut off the fan before examining the blades and see if there s a problem or not. This can cause the fan to start making constant noise and in some cases even a loud squealing sound.

Reasons behind your attic fan humming noise reason 1 of 4. The blower wheel and housing will also squeal when they malfunction. This happens when the fan doesn t receive enough air. Attic fan making loud noise attic fans rattling and shaking are quite common and it s a problem faced by many homeowners who have fans.

Squealing sounds of heavy walking from the ceiling. If you have a closed off attic open a window at the other end or install one to solve this problem. Remove the current worn out bearings and replace them. If the fan blades are imbalanced or bent they can hit against one another or against other parts of the fan.

If the blades are unbalanced you can balance them yourself. The bearings on the motor may be shot leaving the fan to screech as it turns.