Westinghouse Blower motor or belt noise (if belt-driven) / bearing failure

Furnace makes a loud screeching or squealing noise when the blower runs.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Worn blower motor bearings, Loose or misaligned blower wheel, Belt slipping on pulley (older belt-drive models), Motor mounting bracket loose

Safety: Turn off power before touching blower components.

Steps:

Remove blower compartment door and identify the source of the noise while briefly running the blower (keep hands clear).
For direct-drive motors, check for play in the motor shaft and wobble in the blower wheel; replace motor or wheel if bearings are noisy.
For belt-drive systems, inspect the belt for cracks or glazing and replace if worn; adjust tension according to manufacturer guidelines.
Tighten any loose mounting bolts on the motor or blower housing.

Medium 3/5

Blower Motor Assembly

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