How much does it cost to fix boiler error code H2?

Typical repair cost for the boiler H2 fault is £120-450 including labour.

H2 High

Boiler Fault Code H2

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code H2 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 has detected an internal electronic communication failure or a technical error that requires a deep-level diagnosis by a professional. (As reported on Ideal Esprit HE)

Pick your boiler brand for the H2 fix

Ideal H2 2 models

Source

Information for the H2 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