How much does it cost to fix boiler error code 164 225?

Typical repair cost for the boiler 164 225 fault is £120-250 including labour.

164 225 Emergency

Boiler Fault Code 164 225

Also written as 164225 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 164 225 appears across 1 boiler brand and 1 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 physical seal failure, which means gas or fumes could leak out, so you should turn it off immediately and stop using it. (As reported on Ariston Excalibur)

Pick your boiler brand for the 164 225 fix

Ariston 164 225 1 model

Source

Information for the 164 225 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