PRICE GUIDE · PLUMBING & HEATING · 2026–2027
Water Softener Installation cost in the UK
£500–£1,500 per install. Typically £800.
A water softener costs £500–£1,500 fully installed in the UK, with about £800 typical for a mid-range unit. The type of softener, its capacity for your household, and how easily the plumber can connect it to the incoming main and a drain decide the price.
- Search and compare — no account needed
- Nearest to you first
- One score from Google, Trustpilot and Locufy reviews
HOW MUCH IT COSTS
How much does water softener installation cost in the UK?
| Low end | £500 | a basic softener fitted near the stopcock |
|---|---|---|
| Typical | £800 | what most people pay |
| High end | £1,500 | a large twin-cylinder unit in an awkward spot |
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
- Softener type — block-salt, granular salt and twin-cylinder softeners vary widely in price
- Household size — bigger families need a higher-capacity water softener
- Location of the stopcock — the softener goes near the incoming main, which may be awkward
- Drain and overflow — the softener needs a waste connection for regeneration water
- Drinking water tap — a separate unsoftened tap for drinking adds pipework
- Hard water area — very hard water may need a larger softener and more salt
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 water softener installation would have cost about £760 — an estimate from today's guide price and that index, not a recorded price. Source: ONS MM23 D7DO →
WHAT YOU GET
What a water softener installation booking includes
Takes: Two to four hours for most water softener installations. Not included: Salt and ongoing servicing, a separate drinking water tap where not included, and moving the stopcock are usually priced separately — see the related guides below.
WHAT PEOPLE BOOK
Common water softener jobs
KNOW THE PRICE? NOW SEE THE REAL ONES
Water Softener Installation near you, with prices shown
The plumbers and heating firms that cover your area, nearest first, each with their price and one score from every review. No account needed to look.
Or post the job free and let them come to you.
How to pay less
- Choose a water softener sized for your household rather than the biggest model
- Fit the softener near the stopcock to keep the plumbing simple
- Compare the cost of salt and servicing before choosing a softener
Before you book
- Keep an unsoftened drinking water tap, as advice is to avoid softened water for babies' feeds
- Ask whether the water softener meets the water fittings rules, including backflow protection
- Check the hardness of your water with your water company first
- Ask whether the price includes the bypass valve, drinking tap and first bag of salt
Water Softener Installation cost: questions people ask
£500–£1,500 per install, about £800 typical. A basic unit near the stopcock costs least; a large twin-cylinder softener in an awkward spot costs the most.
Usually two to four hours, depending on access to the main and the drain.
It is recommended, especially for making up baby feeds, so most installers fit an unsoftened tap in the kitchen.
It cuts limescale on boilers, taps and appliances, which can lower maintenance costs, though salt and servicing add running costs.
Salt, servicing, an extra drinking tap and moving the stopcock may be extra.
They are Locufy guide prices for the UK, read from published UK water softener costs — a national range, not a quote. Unit type and plumbing access set your price.
MORE GUIDES