How much does it cost to fix Ideal error code 81?

Typical repair cost for the Ideal 81 fault is £150-300 including labour.

81 High

Ideal 81 Fault Code

Q: What does the Ideal 81 fault code mean?

Your boiler is providing central heating as normal, but it has stopped producing hot water for your taps and shower.

The Ideal 81 fault code means: your boiler is providing central heating as normal, but it has stopped producing hot water for your taps and shower.. It appears on 2 Ideal models in our database.

Technical description: CH but no HW

Typical repair cost £150-300 (including labour)

Engineer required

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

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Ideal models that show the 81 fault code

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

Response Repair: £180-350
Response SE Repair: £150-300

Source

Ideal 81 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.

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