Vokera
Mechanical Vibration / Resonance
Boiler makes loud humming, vibrating, or rattling noises 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
Loose boiler casing or mounting, Worn fan bearings, Pump cavitation due to air, Vibrating flue or pipework touching structure
How to Fix / Troubleshooting
Safety first: Do not insert hands into the boiler while it is running.
- External checks: Gently press on the boiler casing to see if noise changes; tighten loose screws if accessible.
- Pipework support: Check that pipes and flue are properly clipped and not touching walls or cupboards.
- Bleed system: Remove air from radiators and pump to reduce cavitation.
- Engineer tasks:
- Inspect fan and pump bearings.
- Secure internal components and add anti-vibration pads if needed.
Persistent mechanical noise often indicates a component nearing failure.
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Repair Difficulty
Medium
3/5
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