Gibson Mechanical Noise / Vibration

Furnace is very noisy during operation (rattling, squealing, or grinding)

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Safety Warning

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.

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Possible Causes

Loose blower wheel on shaft, Worn blower motor bearings, Loose furnace panels or ductwork, Noisy draft inducer motor on Gibson furnace

How to Fix / Troubleshooting

Safety first: Turn off power before tightening or adjusting any components.

Steps to check:

  • Panel screws: Tighten all access panel screws and any visible sheet metal screws on the furnace cabinet.
  • Blower wheel: Remove blower assembly and check that the set screw on the blower wheel hub is tight on the motor shaft. Realign if the wheel has shifted.
  • Motor bearings: Spin the blower wheel by hand. If you hear grinding or feel roughness, the motor bearings are likely worn and the motor should be replaced.
  • Inducer noise: If noise comes from the inducer area, the inducer motor or wheel may be failing and should be replaced as an assembly.
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Repair Difficulty

Medium 3/5

Required Part

Draft Inducer Assembly
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