How much does it cost to fix Baxi error code E25?

Typical repair cost for the Baxi E25 fault is £150-300 including labour.

E25 High

Baxi E25 Fault Code

Q: What does the Baxi E25 fault code mean?

Your boiler has detected that the water inside it has become too hot because it cannot circulate properly, so it has automatically shut down to prevent damage.

The Baxi E25 fault code means: your boiler has detected that the water inside it has become too hot because it cannot circulate properly, so it has automatically shut down to prevent damage.. It appears on 5 Baxi models in our database.

Technical description: Maximum temperature exceeded (possible pump failure or circulation blockage)

Typical repair cost £150-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Baxi models that show the E25 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi E25 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026