Coleman
Blower or Inducer Motor Bearing Failure
Furnace produces a high-pitched squealing or screeching noise during operation.
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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
Worn blower motor bearings, Loose or misaligned blower wheel, Failing inducer motor bearings, Debris rubbing on blower wheel
How to Fix / Troubleshooting
Safety first: Turn off power before reaching into blower or inducer compartments.
Steps to check:
- Identify noise source: Remove the blower door and briefly run the furnace to determine if the noise comes from the indoor blower or the inducer. Do not run for long with the door off.
- Inspect blower wheel: With power off, spin the blower wheel by hand. It should rotate smoothly without wobble. Tighten the set screw on the motor shaft if loose.
- Check for debris: Look for insulation, wiring, or foreign objects contacting the blower wheel or inducer fan and remove them.
- Motor replacement: If bearings are noisy or the shaft has play, replace the blower or inducer motor with a Coleman-compatible motor of the same horsepower, speed, and rotation.
Operating with failing bearings can lead to motor seizure and overheating; schedule repair promptly.
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Repair Difficulty
Medium
3/5
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