Replacing an immersion heater element
Check the steps below first — if you\'re not confident, get it fixed safely today.
Find a Gas Safe engineer near you →⚠️ Always isolate the electrical supply at the consumer unit before working on an immersion heater.
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Most likely cause & what to check
Before assuming the element has failed, check the basics: is the red immersion heater switch turned on? Has the thermostat reset button (small red button on top of the element) tripped? Press it firmly to reset.
If those checks don't help, the element itself has likely failed and needs replacing. This involves draining the cylinder and working with electricity — not a DIY job for most people.
Call an electrician or plumber who handles immersion heaters. Tell them: "My immersion heater isn't heating — I've reset the thermostat button but it's still not working."
Find a Gas Safe registered engineer near you and get it fixed properly.
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