A15 High
Your boiler has developed a recurring problem with how it clears exhaust fumes and has locked itself out for safety after multiple failures.
Technical description: Fault F05 generated 5 times within the last 24 hours – possible error with the air pressure switch
Typical repair cost: £120-280 (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 A15 — 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
- Air Pressure Switch
- Venturi Tube
- Fan Assembly
*Affiliate links — we may earn a commission at no extra cost to you.