A boiler, sometimes called a water heater, supplies all of the heating and hot water for your home. It is usually wall hung, but sometimes floor standing, and in most cases has a ‘flue’ that goes through the wall to outside. Some boilers work with a hot water cylinder which is usually located on the first floor in the ‘airing cupboard’.
Boilers run on different fuel types, including gas, oil, electric and biomass, but function in a very similar way. Most UK homes have a gas boiler. Those living in rural locations often have an oil boiler or may have switched to a renewable energy source such as a heat pump or wood-fuelled boiler.