A steam heating system is a type of heating system that uses a boiler to produce steam, which is then distributed through a network of pipes to various rooms in a building. The steam is typically generated by heating water to its boiling point, and the resulting steam is used to transfer heat to the rooms through the pipes. The steam can be used to heat the air in the rooms directly, or it can be used to heat water or other fluids in a radiator or other heat exchanger, which can then be used to transfer heat to the air in the room.