Under sink water softeners typically cost between £1595 and £2995 supplied and installed, depending on the model and your plumbing setup. Running costs are usually £100 – £150 a year for salt. We give fixed installation quotes after a free site visit, so there are no surprises once work begins.

A well-maintained under sink water softener typically lasts 10 to 15 years. The resin bed gradually loses efficiency over time and will eventually need replacing, but most other components last the lifetime of the unit. Regular servicing extends working life and keeps performance consistent.

Yes. Like full-size softeners, under sink units use ion exchange and need salt to regenerate the resin. Most under sink models have a built-in brine tank that holds enough salt for several weeks of normal use. We supply replacement salt as part of our ongoing service for clients across Kent.

We recommend an annual service for under sink water softeners. Annual servicing keeps salt usage efficient, picks up small issues before they become expensive ones, and ensures the resin bed is performing properly. We offer service plans across Canterbury and Kent that include salt top-ups and a yearly check.

It’s possible if you’re confident with plumbing, but we’d recommend professional installation in most cases. A poor connection can cause leaks inside a kitchen cupboard, void the manufacturer’s warranty, and reduce the softener’s performance. Our installation includes proper isolation valves and a full commissioning check.

A water softener removes the minerals that cause limescale — calcium and magnesium — using ion exchange. A water filter removes contaminants like chlorine, sediment, and sometimes harmful chemicals, using a physical or carbon filter.

They do different jobs, and some homes benefit from both. See our water filters page for more on filtration options.