Renewable heating is an application of renewable energy. It refers to the renewable generation of heat, e.g. by replacing a fossil fuel boiler and instead using an option such as solar thermal, biomass boilers, air source heat pumps and ground source heat pumps or geothermal to feed thermal emitters or radiators. Renewable heating options can also be used to heat and store water in hot water cylinders, also known as thermal store, as well as using low water content radiators or  underfloor heating to environmentally heat your home.