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The Roman heating system was called a hypocaust. How did Romans heat their homes?Rich Romans liked to be warm and cosy. They had central heating at home, in villas and in public baths. The heating system was kept going by slaves, who kept a fire blazing in a furnace to heat warm air. The warm air moved around the building through spaces under the floors and between the walls.
Water is heated in either a cast iron or steel boiler before it is dispersed throughout your home. In a hot water system, the heated water is circulated through radiators or baseboards. In a steam system, the water turns to steam and rises through pipes to the radiators. In a warm air system, your furnace heats air. A blower then sends the heated air up through the ducts and out of vents in your floors or walls. The air gets drawn back to the furnace through a return duct and the cycle repeats.