Burner pulses High
Your boiler is struggling to breathe properly, causing the flame to flicker irregularly and the unit to vibrate.
Technical description: Insufficient air supply – check the air damper setting and the condition of the fan, check room ventilation
Typical repair cost: £120-350 (including labour)
DIY fix possible
Check that all external air vents or bricks near the boiler are not blocked by leaves or debrisEnsure the balanced flue terminal outside is clear of any obstructions like overgrown bushesVerify that the boiler cupboard has adequate ventilation if it was recently enclosed
Protect yourself from future repair bills
A boiler cover plan would cover faults like Burner pulses — no call-out fees, no surprises.
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Parts commonly replaced
- Burner Fan
- Air Damper Mechanism
- Blast Tube
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