Water softener installation — what to expect

Most installations take 2-4 hours. A straightforward under-sink install with the rising main nearby is typically done in 2 hours. More complex jobs involving pipework rerouting, garage installs, or loft-fed systems can take half a day.

Expect to pay between £200 and £500 for installation on top of the unit cost. The price depends on your plumbing layout, distance from the rising main, and whether any additional pipework is needed. Your installer will confirm the exact figure in their quote.

The most common location is under the kitchen sink, close to the rising main. Other popular spots include utility rooms, garages, airing cupboards, and under-stairs cupboards. The unit needs access to the mains water inlet, a power socket (for electric models), and a drain for the regeneration waste water.

Clear the area around the rising main stopcock (usually under the kitchen sink). Move cleaning products and anything stored in the install space. Make sure the installer can access the stopcock easily. The water will be off for 30-60 minutes during the connection.

Yes, but only briefly. The installer needs to turn off the mains to cut into the pipework and fit the bypass valve. This typically takes 30-60 minutes. Once connected, the water comes back on immediately and the softener starts working.

Yes, provided you have access to the rising main and a suitable cupboard or under-sink space. In leasehold flats you may need freeholder permission for plumbing modifications. Most compact block-salt units fit easily under a standard kitchen sink.

Your installer will run a water hardness test to confirm the softener is working correctly, show you how to top up the salt, set the regeneration schedule, and leave you with the manufacturer warranty paperwork. Soft water reaches all taps within a few hours of the first regeneration cycle.