Electric Attic Fan Is Screeching Sound

If this is the problem you ll probably hear the screeching the entire time your air conditioner is running.

Electric attic fan is screeching sound.

The bearings on the motor may be shot leaving the fan to screech as it turns. This will definitely produce noise while the blades are rotating. Look on the front or back of the electric motor where the armature spindle extends from the motor. Your attic fan may not be turning on because of an electrical problem like a tripped circuit breaker a blown fuse or a bad connection.

These sounds may be an indication of loose hardware or a failing motor. When the fan turns on in your compressor unit it should not rattle. If the fan blades are imbalanced or bent they can hit against one another or against other parts of the fan. Using a fan to blow hot air out of the attic doesn t address the radiant heat flow from the roof to the attic floor.

It would start up and then stop less than a minute later. Fan motor the fan on your outside unit is responsible for blowing air over the condensing coils which helps remove the heat from the refrigerant. Was gone for about an hour p p came back and the fan is running. It could be something causing the fan blades to bind but that d make a clattering noise as in a playing card in the bicycle spokes.

Most attic fans have belts from the motor to the blades like a car. I couldn t see any. Due to regular wear and tear these bearings can become worn out or lose their lubrication ability. Unless the fan is locked up solid.

Attic fans gable vent fans generally aren t made to be serviced the fan is probably pressed onto the motor shaft and there s no practical way to replace it in the field. Went to hd and lowes picked up a new thermostat and fan motor. Shut off the fan before examining the blades and see if there s a problem or not. If the attic fan isn t turning on it could be an electrical issue a problem with the thermostat or the motor of the fan that s not working.

Remove the current worn out bearings and replace them. It was running at a very low rpm. Attic fans also have small ball bearings that help lubricate the fan s movement. Trying to solve the heat gain problem in your attic by using a fan is like lying out at the beach with a fan blowing over you and thinking you re not.

Much of that heat then conducts downward and finds its way into the house. Check for imbalanced or bent blades. P my attic fan started squeaking this morning. The louder the sound the more serious the problem can be.

If the noise is similar to a scream your compressor may be failing. P p i went into the attic almost passed out and tried to see if there were any lube points.