How Solar Hot Water Works
Solar water heating systems use free heat from the sun to warm domestic hot water. Solar panels, called collectors are fitted to your roof to collect heat from the sun and use it to heat up water, which is stored in a hot water cylinder. A boiler or immersion heater can be used as a back up to heat the water further.
You will need around five square metres of roof space which faces east to west through south and receives direct sunlight for the main part of the day.
The panels do not have to be mounted on a roof: they can be fixed to a frame on a flat roof or hanging from a wall.