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

Typical repair cost for the boiler HF fault is £120-£350 including labour.

HF High

Boiler Fault Code HF

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code HF appears across 1 boiler brand and 5 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 a signal for a flame when there shouldn't be one, or there is an electrical fault within the ignition system preventing it from starting safely. (As reported on Ideal Classic FF)

Pick your boiler brand for the HF fix

Ideal HF 5 models

Source

Information for the HF 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 27 April 2026