Immersion Heater Repair

What immersion heater repair covers

Immersion heater issues can be electrical, mechanical, or linked to the hot water cylinder controls and safety devices. Repair focuses on finding the cause and fixing only what is needed.

• Fault diagnosis for no hot water, intermittent heating, or slow recovery
• Testing and replacement of immersion elements and thermostats
• Checking isolator switches, fused spurs, wiring, and earthing
• Identifying causes of RCD or fuse trips
• Inspection of cylinder fittings around the immersion boss for leaks or corrosion
• Checks on controls and safety components, especially on unvented cylinders

When this service is right for you

Book immersion heater repair if you:

• Have no hot water but heating is working
• Only get lukewarm water or it runs out unusually fast
• Notice burning smells, buzzing, or unusual noises from the cylinder area
• Find the fuse has blown or the RCD trips when the immersion is switched on
• Have a leaking immersion flange or signs of overheating

What to expect on the day

Work typically follows a clear, safe sequence:

1. Isolate the electrical supply and confirm safe access.
2. Test the immersion circuit and controls to locate the fault.
3. Explain the problem and the repair options before parts are fitted.
4. Repair or replace the failed component, then test operation and temperature control.

If the system is unvented, checks must be completed by an engineer with the correct certification.

After the repair

Once hot water is restored, you will get practical guidance to help prevent repeat faults, such as:

• Recommended thermostat settings for comfort and safety
• When to use immersion as a backup vs primary hot water source
• Signs to watch for, like renewed tripping or slow heat-up

If the cylinder, controls, or electrical supply show wider issues, you will be advised on the next sensible step rather than a quick fix that will not last.