Choosing between an electric shower and a mixer shower is not really a matter of preference; it comes down to what the property's existing hot water system can actually deliver, and the two options make very different demands on it.

A flexible hose looks like the simplest part on a plumbing job, right up until the wrong one is fitted and something fails under pressure. Getting the spec right starts with bore size: the internal diameter of the hose has to match the fitting and the flow the job actually needs, not just whatever thread happens to fit at the tap end. Too small a bore restricts flow and pressure at the outlet; matching it correctly keeps performance consistent with the rest of the system.

Plumb2U carries the parts and spares for both instantaneous and storage electric water heaters, from elements and thermostats to the fittings that connect them into a system, at trade prices with next-day despatch across the UK. For merchants and installers working from a plumbers merchants account rather than a shop counter, that means the right spare is one order away, not a special one.

That is the practical filter for a trade buyer: check what is actually feeding the property first, cylinder type, boiler type and measured pressure, before recommending either option. An electric shower sidesteps a weak or inconsistent hot water system by generating its own supply on demand. A mixer shower only performs as well as the system behind it allows, which makes it the stronger choice specifically where that system is already strong.

The heating element is the part doing the actual work, raising the temperature of the water as it passes through the unit, and it is also the part most exposed to hard water. In areas with harder mains supply, elements pick up scale over time in exactly the way any heating element does, which reduces efficiency and eventually causes failure, showing up as a shower that runs cold, runs lukewarm, or trips out shortly after being switched on.

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