In straightforward terms, an immersion heater uses electricity to heat water and sits inside a large hot water cylinder. The system works by immersing a metal component in a water task, which is connected to the mains using a cable. When switched on, the electricity will heat the metal; therefore, warming the surrounding water. It is your choice whether you opt for using a hot water heater as your main hot water heater or as a backup for your combi boiler.

Installing an immersion heater in your home can prove incredibly beneficial. Through using thermostatic controls, you can programme your heater to automatically turn off when it has reached optimum temperature, saving money on wasted energy. As the heaters are not connected to your boiler, it also serves as an alternative hot water source if your system was to breakdown, all you will need is electricity.