Immersion heater and thermostat replacement
If your immersion heater has stopped heating the water, the element or the thermostat has usually failed. We replace both on vented hot water cylinders, and we can supply the element and thermostat as well as fit them. Send us photos on WhatsApp and we reply with a fixed quote.
What we do
Photos first, fixed quote, then the work
Four steps, so you know where you stand.
Step 1: Send photos
WhatsApp photos of the cylinder, the immersion heater and its switch, and say what the water is doing.
Step 2: Fixed quote
We reply with a fixed quote that says what is included, before any work starts.
Step 3: Element and thermostat
We drain the cylinder. The element is disconnected safely, replaced with a new element and thermostat, and reconnected.
Step 4: Refilled and tested
We refill the cylinder, check for leaks and confirm the water heats up.
Element or thermostat?
The element is the heating part that sits in the cylinder. The thermostat controls the temperature. Either can fail on its own, and the symptoms can look alike: water that stays cold, takes far too long to heat, or gets too hot.
We check which has failed, so you are not paying to replace more than you need. Often it makes sense to replace both together, and we will say.
Old elements can be stubborn
Over the years limescale builds up on an element and the part can seize in the cylinder. Removing it takes care so the cylinder is not damaged. If the cylinder itself looks past its best, we will tell you honestly, and you can compare with hot water cylinder replacement.
What to send us on WhatsApp
- The immersion heater and its cap, close up
- The cylinder, from the floor to the top
- Any label on the cylinder
- The switch or timer for the immersion
- What the water is doing, and since when
Send us photos on WhatsApp for a fixed quote.
Send photos on WhatsAppFrequently asked questions
How much does an immersion heater replacement cost?
There is no set price. Send us photos on WhatsApp and we will give you a fixed quote.
Which cylinders do you fit immersion heaters to?
Vented hot water cylinders, the traditional tank in the airing cupboard fed from the cold water tank in the loft.
How do I know if it is the element or the thermostat?
Cold water, slow heating or water that gets too hot can all be either. We check which has failed and replace what is needed.
Do you supply the element and thermostat?
Yes. We can supply the immersion element and thermostat as well as fit them. Send us photos on WhatsApp and we include the parts in the fixed quote.
Does the cylinder need draining?
Yes. The cylinder is drained to take out the old element, then refilled and checked for leaks.
Can you replace the whole cylinder instead?
Yes. See hot water cylinder replacement.