How much does it cost to fix boiler error code Air flow fault?

Typical repair cost for the boiler Air flow fault fault is £150-300 including labour.

Air flow fault High

Boiler Fault Code Air flow fault

Also written as AIRFLOWFAULT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code Air flow fault appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to clear air fumes properly, so it has safely shut down to prevent any unsafe conditions. (As reported on Worcester Bosch 24CDi BF)

Pick your boiler brand for the Air flow fault fix

Worcester Bosch Air flow fault 2 models

Source

Information for the Air flow fault fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026