How much does it cost to fix boiler error code H13?

Typical repair cost for the boiler H13 fault is £90-140 including labour.

H13 Low

Boiler Fault Code H13

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code H13 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is simply reminding you that it is time for its annual safety service, as set by the installer, rather than indicating a mechanical breakdown. (As reported on Worcester Bosch Greenstar i)

Pick your boiler brand for the H13 fix

Worcester Bosch H13 3 models

Source

Information for the H13 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