Thermeau Mechanical Vibration / Fan Imbalance

Heater vibrates excessively or rattles loudly when the fan is running.

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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

Debris caught in Thermeau combustion blower wheel, Bent blower wheel blades, Loose mounting hardware on blower or cabinet panels, Worn blower motor bearings

How to Fix / Troubleshooting

Safety first: Turn off power and gas. Allow moving parts to stop completely before inspection.

  • Inspect blower wheel: Remove the blower cover and check for leaves, insects, or debris lodged in the wheel. Clean carefully.
  • Check for damage: Look for bent or missing blades on the blower wheel. Replace the wheel if damaged.
  • Secure mounts: Tighten all screws and bolts securing the blower assembly and cabinet panels to reduce rattling.
  • Spin test: Manually spin the blower wheel; roughness or noise indicates worn bearings and the blower motor should be replaced.
  • Reassemble and test: After reassembly, run the heater and confirm vibration is reduced.
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Repair Difficulty

Medium 3/5

Required Part

Thermeau Combustion Blower Assembly
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