How much does it cost to fix boiler error code FIL?

Typical repair cost for the boiler FIL fault is £150-250 including labour.

FIL Medium

Boiler Fault Code FIL

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code FIL appears across 1 boiler brand and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected that the internal components responsible for transferring heat need professional cleaning to restore efficiency. (As reported on Vokera Vibe Max)

Pick your boiler brand for the FIL fix

Vokera FIL 7 models

Source

Information for the FIL 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