Radiant heatrefers to heat that emanates from a heated element or substance. Radiant heating systems do not rely on circulating heated air via ductwork or other means. Radiant heating units are manufactured assemblies designed to provide comfort heating through radiant heat transfer. Infrared rays are radiated from an electric or fuel-fired assembly until they are absorbed by objects -- floors, people, furniture, etc., which then transfer heat to the surrounding area.