How much does it cost to fix boiler error code Insufficient water pressure?

Typical repair cost for the boiler Insufficient water pressure fault is £80-120 including labour.

Insufficient water pressure High

Boiler Fault Code Insufficient water pressure

Also written as INSUFFICIENTWATERPRESSURE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code Insufficient water pressure 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 stopped because the water pressure inside your heating system has dropped too low to operate safely. (As reported on Ariston Micro Combi 27 MFFI)

Pick your boiler brand for the Insufficient water pressure fix

Ariston Insufficient water pressure 1 model

Source

Information for the Insufficient water pressure 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