Attic Fan Making Screeching Noise

Turn the fan on w o blades to see if the plate wobbles and then replace blades.

Attic fan making screeching noise.

The bearings on the motor may be shot leaving the fan to screech as it turns. If this is the problem you ll probably hear the screeching the entire time your air conditioner is running. 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.

If you have a closed off attic open a window at the other end or install one to solve this problem. The blower wheel and housing will also squeal when they malfunction. Blade is made of thin metal sheets in most of the household fans. Reasons behind your attic fan humming noise reason 1 of 4.

If the blades are unbalanced you can balance them yourself. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. This happens when the fan doesn t receive enough air. If the fan blades are imbalanced or bent they can hit against one another or against other parts of the fan.

Blower and fan noises such as squeaks squeals and rattles may be transmitted through the duct system. Squealing sounds of heavy walking from the ceiling. Rattling noises rattling is a common noise with air conditioners as the various fasteners throughout the machine can eventually come loose. In addition to hearing consistent scratching sounds another important sign you have bats in the attic is high pitched screeches.

And there is no exception with the attic fans as well. This will definitely produce noise while the blades are rotating. 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. Remove the current worn out bearings and replace them.

If you hear rattling start by checking the screws or. The fan on your outside unit is responsible for blowing air over the condensing coils which helps remove the heat from the refrigerant. You may need to remove all fan blades level the mounting plate usually one set screw tightens against a rotating shaft. Due to excessive pressure or sudden strikes these blades might get bent or damaged.

For some units this sound is normal upon start up. Sometimes the plate the blades mount on can come loose.