How much does it cost to fix boiler error code P26?

Typical repair cost for the boiler P26 fault is £150-250 including labour.

P26 High

Boiler Fault Code P26

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code P26 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 is struggling to push air through its system correctly, so it has stopped working to keep your home safe. (As reported on Alpha Pro Tec Plus)

Pick your boiler brand for the P26 fix

Alpha P26 2 models

Source

Information for the P26 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