Grant
Mechanical Vibration or Resonance
Boiler is excessively noisy with vibration transmitted through pipework and casing.
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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 burner mounting, Fan imbalance, Pump cavitation, Pipework not clipped or touching structure
How to Fix / Troubleshooting
Safety: Noise alone is not usually dangerous, but can indicate developing faults.
User checks:
- Ensure no loose items are touching the boiler casing or pipework.
- Note when the noise occurs (start-up, running, shutdown) for the engineer.
Engineer actions:
- Check burner mounting bolts and gaskets for tightness and integrity.
- Inspect the fan impeller for damage or imbalance.
- Assess the pump for cavitation (often due to air or incorrect speed) and adjust or replace.
- Secure and clip pipework to prevent resonance.
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Repair Difficulty
Medium
3/5
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