How much does it cost to fix boiler error code I.144?

Typical repair cost for the boiler I.144 fault is £150-250 including labour.

I.144 Medium

Boiler Fault Code I.144

Also written as I144 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code I.144 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal sensor that checks for safe burning is showing signs of age and needs to be replaced to ensure the unit continues to operate safely and efficiently. (As reported on Vaillant ecoTEC Plus 832)

Pick your boiler brand for the I.144 fix

Vaillant I.144 3 models

Source

Information for the I.144 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