Takagi Excessive Vibration / Fan Noise

Takagi water heater is very noisy; loud fan or vibration sounds 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

Debris in combustion fan, Loose mounting screws, Misaligned vent piping transmitting vibration, Failing fan motor bearings

How to Fix / Troubleshooting

Safety first: Turn OFF power and gas before touching the fan or venting.

Steps:

  • 1. Check mounting: Ensure the heater is securely mounted to the wall and that all mounting screws are tight.
  • 2. Inspect fan: Remove the cover and check the combustion fan for debris or damage. Gently remove any foreign objects.
  • 3. Tighten internal screws: Carefully tighten accessible screws on the fan housing and internal brackets.
  • 4. Vent support: Make sure vent piping is properly supported and not putting stress on the heater, which can amplify vibration.
  • 5. Replace fan if needed: If noise persists and the fan feels rough when spun by hand, the fan motor may need replacement by a technician.
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Repair Difficulty

Medium 3/5

Required Part

Combustion Fan Motor
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