Shower installation: surveyed, fitted and tested in a single visit in Leamington Spa

Installing a shower looks straightforward until the unit is on the wall and the flow is disappointing, or the temperature will not settle. Nearly every unhappy installation we are called to put right shares the same root cause: the shower was chosen before the water system was understood.

What the job actually involves

A shower installation is three jobs in one. There is the plumbing — bringing hot and cold supplies to the right place at the right pressure, in pipework that will not be seen. There is the fixing — mounting the unit level and secure on a wall that can take it, cutting the enclosure or tray as needed, and sealing every joint so water goes down the drain and not into the floor. And for an electric shower there is the electrical side, which means a suitably rated circuit, an isolating pull cord or switch, and earthing, all of which is notifiable work in England and Wales.

Choosing a unit that suits your water system

This is where most of the value sits. A gravity-fed system with a tank in the loft and a cylinder in the airing cupboard produces low pressure at the shower head. Fitting a high-pressure mixer there will give you a weak, unreliable shower. The right answer might be a pumped mixer, or a shower pump, or a different arrangement entirely.

A combi boiler delivers mains-pressure hot water but at a limited flow rate. A large rain head may be more than the boiler can supply, and you will feel it as a temperature drop when the boiler modulates. A thermostatic mixer sized sensibly will be far better.

An unvented cylinder gives strong, stable pressure and suits almost anything. A low-pressure electric shower heats water as it passes and needs a good cold mains supply and a hefty cable.

If you want a straightforward electric shower installation, we will check the cold main's flow and pressure and the consumer unit's capacity before quoting, because those two things decide whether the job is a simple swap or needs a new circuit.

Why the fitter matters more than the box

A shower installation plumber is doing two things at once: making the water go where it should, and making sure it stays there. The difference between a good installation and a poor one rarely shows up on day one. It shows up a year later, as a weep behind the tiles, a unit that has gone loose on its fixings, or a flow that never quite matched the head you chose. Ask what will be tested and what will be left accessible before you book anyone.

The survey before the day

We ask for photos of the existing setup, the consumer unit if there is one nearby, and the shower area. On the day we confirm pipe sizes and routes, check for isolation valves, test pressure and flow, and agree the finished height and position with you before cutting anything. Nothing is opened up until the plan is settled.

How we install it

We isolate the supplies, drain down what is needed, and remove the old unit where there is one. New pipework is run in the least invasive route available, clipped and protected, with isolation valves fitted so the shower can be serviced later without turning off the whole house. The unit is mounted, levelled and connected, the electrical supply is terminated and tested where applicable, and the enclosure or tray is sealed with a sanitary-grade silicone.

Then we run it. Hot, cold, full flow, half flow, and a check for leaks at every joint after the water has been on for long enough to show a weep.

Time and cost, honestly

That covers a like-for-like replacement in an existing shower position with services already in place. What moves it beyond that is honest to say up front: a change of unit type, a new electrical circuit, moving the shower to a different wall, boxing in pipework, or making good tiling and decoration afterwards. We quote those separately rather than discovering them halfway through.

Aftercare and prevention

Keep the installation dry and ventilated — a bathroom that never dries out will destroy seals and grout far sooner than any manufacturing fault. Clean the shower head and hose periodically, run the unit briefly after use, and know where your isolation valves are. Keep the paperwork for the unit, since guarantees are usually conditional on professional installation.

When to call it in

Call us before you buy a shower if you are unsure what your system can support, or if a quote you have had does not mention pressure testing or electrical capacity. Call us after installation if the flow is weaker than expected, the temperature will not hold, or anything weeps.

Book a call-out

Send us a photo of your current shower and your boiler or cylinder, tell us what you want to achieve, and we will tell you what will work and what it will take. Book a call-out and we will survey, advise and install.