Immersion heater

Immersion heater repair across Ireland

Faulty element, broken thermostat, or full immersion replacement. Local plumbers across all 26 counties ready to restore your hot water.

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Signs your immersion heater needs attention

The immersion heater is the backup or primary source of hot water in thousands of Irish homes, particularly where there is no gas supply. When the element burns out or the thermostat fails, you lose hot water entirely. Most repairs are straightforward and can be completed in under two hours by a local plumber. Our directory lists local plumbers across all 26 counties who carry common immersion elements and thermostats in their vans.

No hot water even after the immersion has been on for two hours
The circuit breaker trips repeatedly when the immersion is switched on
Water takes much longer to heat than it used to
Water temperature is scalding or unpredictable
The immersion element has not been replaced in over ten years
You can hear a loud popping or hissing noise from the cylinder

Common immersion heater jobs

Element replacement

The heating element is the most commonly replaced immersion component. A plumber drains the cylinder, swaps the element, and refills the system. Most jobs take one to two hours.

Thermostat replacement

A faulty thermostat causes water that is too hot, too cold, or simply stops heating. Replacement is quick and inexpensive, and usually done at the same time as an element swap.

Timer replacement

An immersion timer controls when your hot water heats up. If your timer stops responding or the display is blank, a plumber can fit a new mechanical or digital replacement.

Full immersion unit swap

When the immersion boss or cylinder thread is corroded beyond repair, a full unit replacement is needed. The plumber fits a new immersion assembly rated to the cylinder capacity.

Typical immersion heater repair costs in Ireland

Costs vary by the part that needs replacing and the age of your cylinder. The prices below are typical market rates for parts and labour combined. A call-out fee may apply depending on your location.

Job	Typical cost
Element replacement	€120 to €220
Thermostat replacement	€80 to €150
Full immersion unit swap	€200 to €380
Timer replacement	€60 to €120
Prices include parts and labour. Call-out fee may apply depending on location.

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