Typically 2–4 Hours
Water Off for 30–60 Mins
Same-Day Soft Water
What happens hour by hour on a standard under-sink install.
Installer checks the rising main, confirms the plan, protects the work area, and lays out tools and materials.
Mains water off. Installer cuts into the pipework, fits the bypass valve, and connects the softener’s inlet and outlet pipes. This is the only period without water.
Softener goes into position. Waste pipe connected to a drain. Electric models plugged in. All connections leak-tested under pressure.
Salt loaded, first regeneration triggered, water hardness tested. Installer walks you through salt top-ups and maintenance, and hands over warranty paperwork.
Most installs land between 2 and 4 hours. Here is roughly how the time breaks down — and the things that push it longer.
The installer confirms the location, lays down floor protection, and isolates your water at the stop cock. Quick on a planned install where the survey visit already happened; longer if the location changes on the day.
The longest single phase. Cutting into the rising main, fitting the bypass valve, running inlet/outlet hoses to the unit, and connecting to the drain. Older homes with mixed pipework or awkward access take longer.
Sliding the softener into place, levelling it, and making the final connections. Under-sink Compact units go in fast. A Maxi in a tight utility room corner can be a two-person lift.
The installer turns the water back on, runs the first regeneration cycle, programmes the unit to your local water hardness, and loads the first batch of salt. Soft water is at the taps before they leave.
The installer shows you how to top up salt, where the bypass lever is, and how to read the meter. You get a commissioning certificate — keep this safe; it activates your warranty.
Seized stop cock. Lead pipework needing replacement. Drain runs longer than 2 m. Awkward access (loft, cellar, behind built-in units). Switching between unit sizes mid-install because the surveyed spot does not fit. Each adds 30–90 minutes.
Practical tip: book your install for a morning slot. If something unexpected comes up (a part needed, a second visit), the installer still has the afternoon to sort it. An afternoon slot leaves you with no water overnight if the job runs long.
See also: what installation involves · install cost breakdown · plumbing requirements
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What people ask about how long it takes.
Complex jobs: garage installs with long pipe runs, homes with concrete floors where pipes need channelling, or properties where the rising main is in an awkward location. Your installer will estimate the time in their quote.
Not during the 30–60 minute plumbing phase when the mains is off. Before and after that, water runs normally. The installer will let you know before turning it off.
Yes. A professional installer will remove all waste materials, wipe down surfaces, and leave the area as they found it. This is standard practice.
Morning. If anything unexpected comes up — a missing part, a second visit needed — the installer still has the afternoon to sort it. An afternoon slot leaves you potentially without water overnight if the job overruns.
Roughly 30 to 90 minutes during the main plumbing phase. The installer will warn you before turning the stop cock off. Filling a kettle, a couple of jugs, and flushing toilets one last time before they start is enough for most households.
Almost immediately after the installer leaves. The unit goes through its first regeneration cycle during the install itself, so by the time they hand over you should already be tasting the difference at the cold tap.
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