How much does it cost to fix boiler error code 211?

Typical repair cost for the boiler 211 fault is £150-300 including labour.

211 Emergency

Boiler Fault Code 211

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 211 appears across 1 boiler brand and 4 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 hot exhaust gases are not escaping properly through the flue and has shut itself down for your safety to prevent the build-up of harmful fumes. (As reported on Worcester Bosch 24/28/35 CDi MkII)

Pick your boiler brand for the 211 fix

Worcester Bosch 211 4 models

Source

Information for the 211 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