Water Tank & Immersion Heater Installers

Hot water cylinders are still found in many homes across the UK, despite the popularity of combi boilers. Hot water cylinders store heated water so it is available for baths, showers, washing up and other household uses. The type and size of hot water cylinder you need will depend largely on your household's hot water requirements. Hot water cylinders and immersion heaters are often located in an airing cupboard or loft, although some systems can be installed elsewhere in the home.

Types of Hot Water Cylinder

There are several types of hot water cylinder available, including vented, unvented, direct, indirect, thermal store and solar cylinders. Unvented cylinders work directly from the mains water supply and do not require a cold water storage tank in the loft.

Unvented cylinders are commonly manufactured from stainless steel and can provide hot water at mains pressure, although the actual flow rate will depend on the incoming water supply. Vented cylinders use a cold water storage tank, which is usually located in the loft, and rely on gravity to supply the cylinder.

Direct cylinders heat the water using an internal heating element, such as an immersion heater. They are available in both vented and unvented configurations. Indirect cylinders use an external heat source, usually a boiler, which heats the stored water through a coil inside the cylinder.

Solar Heating Hot Water Cylinders

Indirect cylinders can also be fitted with immersion heaters to provide an additional heat source. Solar cylinders are designed for use with solar thermal heating systems. A heat transfer fluid circulates through the solar collectors and pipework before transferring heat to the stored water through a coil within the cylinder. Solar cylinders may also have an additional heat source, such as an immersion heater or boiler connection, for periods when there is insufficient solar energy to meet the household's hot water requirements.

Choosing a Plumber for Water Tank and Immersion Heater Repair or Installation

The person you need will depend on the type of hot water system and the work required. Installation and maintenance of an unvented hot water cylinder should be carried out by someone with the appropriate G3 qualification for this type of system. Immersion heaters also involve electrical connections, so some jobs may require an electrician.

When hiring a tradesperson, ask friends or family for recommendations where possible or compare at least three quotes. Check that they hold any qualifications or registrations required for the particular work and have suitable Public Liability Insurance. You should also ask for a written quote explaining the work and costs involved before the job begins.

Water Tank & Immersion Heater Installation Cost

Replacing an immersion heater may cost around £120 including labour, although the final price will depend on the type of heater and accessibility. A replacement immersion heater itself can cost around £20-£325. Installing or replacing a water tank may cost around £150-£375, depending on the type and size of the tank, the existing pipework and the work required.