Chaffoteaux Fan Bearing Failure / Imbalance

Furnace fan is very loud, with rattling or scraping noises from the flue fan area.

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 fan bearings, Debris in fan wheel, Loose fan mounting screws, Distorted fan impeller

Safety: Turn off power before removing the combustion cover.

Inspect fan visually: Remove the sealed chamber cover and check the fan wheel for debris or damage.
Tighten fixings: Ensure the fan mounting screws are tight and the fan housing is secure.
Clean fan: Carefully remove dust and debris from the fan blades with a soft brush and vacuum.
Replace if worn: If the fan still makes grinding or rattling noises, the bearings are likely worn and the fan assembly should be replaced by a professional.

Hard 4/5

Flue Fan Assembly

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