How much does it cost to fix boiler error code d13?

Typical repair cost for the boiler d13 fault is £150-300 including labour.

d13 High

Boiler Fault Code d13

Also written as D13 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code d13 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's electronic brain is experiencing an internal communication error that prevents it from starting up correctly. (As reported on Alpha E-Tec NXS)

Pick your boiler brand for the d13 fix

Alpha d13 2 models

Source

Information for the d13 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