Boiler vibrates excessively and transmits noise through the building structure

Safety: Turn off power before touching the boiler casing or pipework.

• Check system pressure: Low pressure can cause pump cavitation and vibration. Top up if needed.
• Bleed air from system: Air in the pump or radiators can cause noise and vibration. Bleed radiators and any pump air vents.
• Inspect mounting (visual): Ensure the boiler is firmly fixed to the wall and that anti-vibration pads (if fitted) are intact.
• Secure pipework: Clip any loose pipes near the boiler to reduce resonance.
• Technician tasks: A professional can check fan balance, pump condition, and re-mount the boiler if necessary.