How much does it cost to fix boiler error code H21-060?

Typical repair cost for the boiler H21-060 fault is £150-250 including labour.

H21-060 Emergency

Boiler Fault Code H21-060

Also written as H21060 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code H21-060 appears across 1 boiler brand and 6 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 seals around the combustion area are not airtight, which prevents the unit from operating safely. (As reported on Ideal Mini HE)

Pick your boiler brand for the H21-060 fix

Ideal H21-060 6 models

Source

Information for the H21-060 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