How much does it cost to fix boiler error code E792?

Typical repair cost for the boiler E792 fault is £150-300 including labour.

E792 Medium

Boiler Fault Code E792

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code E792 appears across 1 boiler brand 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 is struggling to pump hot water through the internal system correctly, which may cause your hot water to fluctuate or fail to reach your taps. (As reported on Navien NCB)

Pick your boiler brand for the E792 fix

Navien E792 6 models

Source

Information for the E792 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