How much does it cost to fix boiler error code A13?

Typical repair cost for the boiler A13 fault is £120-220 including labour.

A13 High

Boiler Fault Code A13

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code A13 appears across 2 boiler brands 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 an issue with the sensor that monitors exhaust gases, causing the system to lock down for safety. (As reported on Ferroli Bluehelix Tech)

Pick your boiler brand for the A13 fix

Ariston A13 3 models Ferroli A13 3 models

Source

Information for the A13 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