Boiler or connected pipework vibrates excessively during operation

Safety first: Avoid touching vibrating components directly if they are hot.

Steps to check:

• Secure boiler and pipes: Tighten wall brackets and add pipe clips where pipes move.
• Adjust pump speed: If the circulation pump has multiple speed settings, try a lower speed to reduce vibration.
• Bleed air: Remove air from the system using bleed valves and automatic air vents.
• Check valves: Avoid using fast-closing valves on the system that can cause water hammer.

When to call a technician: If vibration persists, a professional can assess pump selection and system hydraulics.