http://www.rsheatingandbuilding.co.uk/boiler-servicing-and-repairs/
Central-heating boilers produce hot steam or water for radiators, baseboard heaters and under floor heating methods. Boilers eliminate the dry, forced air of traditional furnaces, replacing it by moist heat that will not dry up your property and skin. Buying a boiler represents a major investment and requires careful attention to make sure the device will operate as intended.