How much does it cost to fix boiler error code 67?

Typical repair cost for the boiler 67 fault is £120-250 including labour.

67 Medium

Boiler Fault Code 67

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 67 appears across 3 boiler brands and 8 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 unusual temperature difference while it is turned off, which may be caused by a faulty sensor or an issue with your heating system's water flow. (As reported on Atag Q 25S)

Pick your boiler brand for the 67 fix

Atag 67 6 models Ideal 67 1 model Viessmann 67 1 model

Source

Information for the 67 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