If water is uncontrolled or approaching electrical equipment, prioritise safety and call a plumber. The guidance below is general and does not replace an inspection.

Understanding the issue

Loss of hot water may involve controls, electrical supply or the heating element, as well as the cylinder arrangement. Plumbing work and electrical testing are separate competencies. Repeatedly changing settings can make the history harder to understand.

Before arranging the visit

State whether the system heats at any time and keep the model and tariff details available.

Choosing the appropriate plumbing visit

We check the visible fault, isolation, pipe condition and access before agreeing the repair scope. Our hot water cylinders & immersion heaters page explains the related work and how an assessment is arranged.

Where the findings point to vented hot water cylinder installation, read the vented hot water cylinder installation service details before discussing the repair scope. The actual fitting and access determine the work needed.

Information worth keeping

Record when the issue occurs, the affected room and any previous repair. For a property in our home area, plumbing in West Bridgford explains the local enquiry route; check the coverage directory for another postcode.

Connected questions

For a related question about hot water cylinders & immersion heaters, the guide Hot-water cylinder leaks: where water is appearing explains what to record next.

For a related question about hot water cylinders & immersion heaters, the guide Planning a cylinder replacement explains what to record next.