Hot Water Cylinder Repair & Replacement in Wandsworth

Immersion heater tripping the electrics? Cylinder taking twice as long to heat? These are specific, diagnosable faults with known causes, and our Wandsworth engineers carry the common parts: elements, thermostats, immersion heaters and valve kits.

Vented vs unvented: what you've got matters

Identify yours in seconds: a cold-water tank in the loft and a vent pipe curving over it means vented; a white or stainless pressurised unit with an expansion vessel, pressure-reducing valve and a discharge tundish means unvented. The distinction matters because unvented systems store hot water at mains pressure and are Building Regulations G3-controlled — repair and installation are restricted to qualified engineers, which is exactly who your Wandsworth job is routed to.

Common cylinder faults we repair

The repair list in Wandsworth runs: immersion elements and their thermostats, cylinder stats, two-port valve heads and bodies, unvented safety kit — pressure-reducing valves, expansion vessels, relief valves — and weeping connections at the coil or immersion boss. A cylinder shell that's leaking from the body itself, though, is terminal: shells aren't repairable, and we'll say so straight away rather than sell you a doomed fix. Wandsworth's hard water works steadily on cylinders and shower valves — in a borough full of loft-extended family terraces, scaled unvented systems are a recurring theme.

Repair or replace: the honest arithmetic

We price the decision, not the fear: what the repair costs now, what the cylinder's age and scale condition suggest about the next failure, and what a straight replacement costs installed. In Wandsworth's water, element and coil scaling shortens cylinder life measurably, so the crossover point comes sooner than the national average — but a sound cylinder with a £90 fault still gets the £90 fix.

Cylinder costs in Wandsworth

Component repairs — immersion elements, thermostats, valves — typically land from £150 in Wandsworth including standard parts. Unvented safety-kit work is quoted by a G3 engineer after inspection. Full replacements range widely with capacity and type: a like-for-like vented swap sits at the lower end, an unvented installation with new safety controls and discharge pipework at the upper. Every quote is itemised before work begins.