Hot water cylinders in Harrow,installed and repairedfor reliable hot water

Cylinder size is usually measured in litres. A small cylinder may suit a couple with one bathroom, but a family with two bathrooms and showers running at the same time will need more stored hot water. Too small and you run out; too large and you pay to heat water you don't use.

Water pressure matters too. An unvented cylinder runs from the mains, so the incoming pressure and flow rate need to be good enough. We check this before recommending an unvented cylinder.

If you're planning a heat pump in the future, it's worth choosing a cylinder designed for heat pumps now, so it doesn't need replacing again later.

Older copper cylinders with thin factory insulation lose heat quickly. Modern cylinders are better insulated, holding heat longer and reducing how often the boiler needs to reheat the water.

When a cylinder is replaced, we also check the valves, pipework and controls connected to it. Fitting a new cylinder onto worn valves or an old, unreliable thermostat can lead to problems soon after, so we make sure the whole hot water side of the system is in good order.

Common cylinder faults include a failed immersion heater, a faulty cylinder thermostat, a sticking motorised valve and, on unvented cylinders, problems with the expansion vessel or pressure relief valve. Water dripping from a discharge pipe outside is a sign something needs checking and should not be ignored.

Limescale is another issue in hard water areas around London and Hertfordshire. Scale builds up on the coil and immersion element, slowing reheating and increasing energy use. Where scale is a problem, we can advise on the right approach to protect the new cylinder.

Whether you need a repair or a replacement, we explain the options and the cost before starting, test everything after the work, and show you how to use the controls.