PRICE GUIDE · PLUMBING & HEATING · 2026–2027
Immersion Heater Installation cost in the UK
£120–£250 per install. Typically £180.
Replacing an immersion heater in the UK costs £120–£250, with about £180 typical. A straight element swap in an accessible cylinder is the cheap end; awkward airing cupboards, a seized boss, draining an older tank or adding a new timer or switch push it up.
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HOW MUCH IT COSTS
How much does immersion heater installation cost in the UK?
| Low end | £120 | a straight element swap with easy access |
|---|---|---|
| Typical | £180 | what most people pay |
| High end | £250 | a seized element or extra electrical work |
Locufy guide prices for 2026–2027. Updated 2026. A national range, not a quote — enter your town above for real prices from the plumbers and heating firms near you.
What moves the price
- Element only or more — a new element is cheap, while a timer, thermostat or new switch adds parts
- Access to the cylinder — a cramped airing cupboard slows the immersion heater swap
- Draining the tank — the cylinder has to be partly drained, which takes longer on older systems
- Seized fittings — a corroded element boss can be hard to remove without damaging the cylinder
- Electrical work — a new fused spur or replacing old wiring brings in an electrician
- Cylinder condition — a leaking or badly scaled cylinder may need replacing instead
Plumbing and heating prices in the UK are up 6% over five years (ONS Consumer Price Inflation, Services for maintenance and repair, to 2026 August). Five years ago a typical immersion heater installation would have cost about £220 — an estimate from today's guide price and that index, not a recorded price. Source: ONS MM23 D7DO →
WHAT YOU GET
What an immersion heater installation booking includes
Takes: One to two hours for most immersion heater replacements. Not included: A new hot water cylinder, new wiring circuits and timers or smart controls are usually priced separately — see the related guides below.
WHAT PEOPLE BOOK
Common immersion heater jobs
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Immersion Heater Installation near you, with prices shown
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How to pay less
- Check the immersion heater switch, fuse and thermostat before paying for a new element
- Fit a timer when the immersion heater is replaced so it only heats water when needed
- Replace the element before winter rather than paying for an urgent call-out
Before you book
- Immersion heater wiring should be safe, and any new circuit is a job for a Part P registered electrician
- Ask whether the cylinder is vented or unvented, as unvented cylinders need a qualified installer
- If the cylinder is leaking or very old, ask whether a new cylinder makes more sense
- Ask whether the price includes the element, thermostat and draining down
Immersion Heater Installation cost: questions people ask
£120–£250 per install, about £180 typical. A simple element swap costs least; a seized element or extra electrical work costs the most.
One to two hours for most homes, including draining and refilling the cylinder.
Either can, depending on the work. Swapping the element is plumbing; new wiring or a new switch should be done by an electrician who can certify it.
It heats water with electricity at full price, so it costs more than gas. A timer and a well-insulated cylinder keep the running cost down.
A new cylinder, new circuits and smart controls are usually separate. Ask before booking if the cylinder looks old.
They are Locufy guide prices for the UK, read from published UK immersion heater costs — a national range, not a quote. Access and parts decide your price.
MORE GUIDES