How much does it cost to fix boiler error code GE45/90?

Typical repair cost for the boiler GE45/90 fault is £120-250 including labour.

GE45/90 High

Boiler Fault Code GE45/90

Also written as GE4590 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code GE45/90 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 an issue with the physical alignment or connection of the exhaust flue pipe exiting the unit. (As reported on Grant Vortex)

Pick your boiler brand for the GE45/90 fix

Grant GE45/90 1 model

Source

Information for the GE45/90 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