Electric underfloor heating systems consist of electric heating elements that are installed under the floor. The elements are typically made of thin, flexible wires or mats that are easy to install. They are connected to a thermostat and a power source, and are controlled by a simple on/off switch or a programmable thermostat. When the heating system is turned on, the electric elements begin to heat up. As the floor warms, it radiates heat into the room, warming the surfaces and objects in the room.