E086 Emergency
Your boiler has detected a blockage in the flue pipe that is preventing waste gases from safely exiting your home.
Technical description: Obstruction fumes alarm
Typical repair cost: £120-350 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E086 — no call-out fees, no surprises.
*Affiliate links — we may earn a commission at no extra cost to you. Prices shown are starting prices.
Parts commonly replaced
- Flue terminal
- Fan assembly
- Air pressure switch
*Affiliate links — we may earn a commission at no extra cost to you.