How much does a water softener cost in the UK?
A water softener installation costs £1,000 on average in the UK. Most jobs fall between £500 and £2,000 supplied and fitted. Water softener type: Basic timed or metered electric unit £500 to £900; Standard metered or compact non-electric unit £900 to £1,400; Premium non-electric twin-tank unit £1,400 to £2,000. Prices reviewed July 2026.
A water softener supplied and fitted usually costs between £500 and £2,000 in the UK, with most people paying around £1,000. The price depends mainly on the type of unit you choose and how easy the pipework is to reach.
Water softener cost calculator
Use the calculator to price your water softener installation in 2026. Adjust the options and area for a UK cost range. Nothing is sent anywhere.
Water softener cost breakdown
Typical water softener installation costs, by option:
| Water softener type | Typical UK cost |
|---|---|
| Basic timed or metered electric unit | £500 to £900 |
| Standard metered or compact non-electric unit | £900 to £1,400 |
| Premium non-electric twin-tank unit | £1,400 to £2,000 |
What's included in the price?
Typical water softener installation prices include:
- The water softener unit itself
- A plumber to plumb it into the rising main
- A bypass valve so you can isolate the unit for servicing
- A separate hard-water tap kept for drinking and cooking
- Connecting the backwash waste to a drain
- Setting the hardness level and testing the unit
What changes the price?
The things that move water softener installation prices most:
The type of unit: a timed electric, a metered electric, or a non-electric twin-tank
The brand and model you choose
Where it goes and how far it is from the mains and a drain (under the sink, garage or utility room)
Whether new pipework, a drain connection or a nearby socket is needed
Your household size and how hard the water is
Your region and the plumber's day rate
These are why two quotes for the same job can differ, and the only way to know your price is to get prices from local firms (through Bark; we may earn a fee, at no extra cost to you).
How the price is built up
A simple install near the stopcock is mostly the unit plus 2 to 4 hours of a plumber's time. Costs climb when the softener has to sit away from the mains, so pipework is run to a garage or utility room, a drain connection is added for the backwash, or a socket is fitted for an electric model. Premium non-electric twin-tank units cost more up front but need no power and soften water around the clock. The unit itself is usually £250 to £500 for a basic electric model, £500 to £900 for a mid-range unit, and £900 to £1,300 for a premium non-electric twin-tank softener. The rest is labour, plus a bypass valve, fittings, a separate drinking-water tap and any pipe or drain work.
Ways to keep the cost down
- Fit the unit right next to the rising main and a drain so the plumbing stays simple
- Choose a metered unit over a timed one so it only uses salt when you actually draw water
- Buy salt in bulk 25kg bags rather than small packs to cut the running cost
- Have it fitted at the same time as other plumbing or bathroom work to share the call-out
Does where you live change the cost?
In London, a water softener installation typically costs around £1,200 supplied and fitted, about 20% above the UK average of £1,000. In the North, Scotland and Wales the guide figure is nearer £970.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £500 | £1,000 | £2,000 |
| London | £600 | £1,200 | £2,400 |
| South East / South West | £530 | £1,100 | £2,100 |
| North / Scotland / Wales | £490 | £970 | £1,900 |
Guide prices supplied and fitted, scaled with the same regional multipliers as the calculator. Not quotes.
Water softener cost in major UK cities
| City | From | Typical | Up to |
|---|---|---|---|
| Belfast | £480 | £950 | £1,900 |
| Birmingham | £500 | £1,000 | £2,000 |
| Bristol | £530 | £1,100 | £2,100 |
| Cardiff | £490 | £970 | £1,900 |
| Edinburgh | £490 | £970 | £1,900 |
| Glasgow | £490 | £970 | £1,900 |
| Leeds | £490 | £970 | £1,900 |
| Liverpool | £490 | £970 | £1,900 |
| London | £600 | £1,200 | £2,400 |
| Manchester | £490 | £970 | £1,900 |
| Newcastle | £490 | £970 | £1,900 |
| Sheffield | £490 | £970 | £1,900 |
City guide estimates, scaled by local labour costs. Indicative averages for water softener installation, not quotes.
Installers in London and the South East charge the most, often £100 to £200 above the rest of the country. The North, Wales and Scotland tend to be cheaper. The unit itself costs much the same everywhere, so it is mainly the labour rate that moves the price.
Compare this with a real quote
The figures above are guide prices. Two or three quotes for your water softener installation tell you what it costs where you live.
Free and no obligation. You answer a few questions on Bark, local pros get in touch, and you decide who, if anyone, to hire. We may earn a fee, at no extra cost to you.Common questions
How much does a water softener cost to install in 2026?
About £500 to £2,000 supplied and fitted, with most people paying around £1,000. A basic metered unit fitted near the stopcock sits at the lower end, while a premium non-electric twin-tank unit costs the most.
What changes the price of a water softener?
Mainly the type and brand of unit. A non-electric twin-tank softener from a name like Kinetico or Harvey costs more than a basic electric timer model. Awkward access, running new pipework to a garage, or adding a drain connection also push the labour up.
Is a water softener worth it?
In a hard-water area it usually is. Softened water cuts limescale in the boiler, pipes, kettle and shower, so appliances last longer and heating stays efficient. You also use less soap, shampoo and detergent. It is less worthwhile in a soft-water area, so check your local hardness first.
Can I fit a water softener myself?
A competent DIYer can fit one where there is an accessible mains stopcock, a drain and, for electric models, a socket nearby. Most people use a plumber so it is teed into the rising main correctly, has a bypass valve and keeps a separate hard-water tap for drinking. That separate tap is the part worth getting right, and the reason is a health one: softening works by exchanging the calcium and magnesium for sodium, so the Drinking Water Inspectorate advises keeping an unsoftened supply to the kitchen tap for drinking and cooking, and says artificially softened water should not be used to make up baby feeds. A poor connection can also affect your water pressure.
How long does it take to fit a water softener?
Around 2 to 4 hours for a straightforward install next to the mains. A job that needs new pipework run to another room or a fresh drain connection can take most of a day.
How much does a water softener cost to run?
The main running cost is salt, usually around £40 to £100 a year for a typical household using block or tablet salt. Metered units only regenerate when you actually use water, so they use less salt than older timed models. Electric models also draw a small amount of power.
Official guidance and sources
The rules and schemes referenced on this page come from these official UK sources. The price figures are Costwise's own; see how we price.
- Domestic water filters and softeners Drinking Water Inspectorate · Softening exchanges the hardness for sodium, so the regulator advises keeping an unsoftened supply to the kitchen tap for drinking and cooking, and says softened water should not be used to make up baby feeds.
Cite this data
These figures are free to use in articles, reports and research under a CC BY 4.0 licence. All we ask is a credit to Costwise, and online a link. Where your style allows, please make "Costwise" the linked word so readers can check the figure for their own region.
Costwise (2026): A water softener installation typically costs £1,000 in the UK, ranging from £500 to £2,000 supplied and fitted. Reviewed July 2026. costwiseuk.co.ukSource: Costwise (costwiseuk.co.uk)Costwise (2026). Water softener cost. Costwise UK cost data, version 2026-10-12. https://costwiseuk.co.uk/water-softener-cost/2026-10-12 (158 jobs)Dataset DOI: 10.5281/zenodo.21159943 · also on Kaggle, Hugging Face and Figshare. Method: how we price. Downloadable CSV.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.