What is Radiant Floor Heat?

Radiant Floor Heating System refers to a system that’s installed beneath the floor and radiates heat upward from the floor. Radiant Floor heat is transferred purely through radiation either by hot water pipes or by electric wires buried underneath the earth.

“Radiant floor heating (RFH) involves installing electric heating coils or water-heated tubing under your home’s floors. With an RFH system, the heat from the floor warms everything it touches and radiates throughout the room from the ground up. Think of RFH like heat from the sun. On a sunny day, if you step from the shade into the sun, you’ll feel warmer even though the air temperature is basically the same. This is how radiant floor heating works. Temperature throughout the room is more constant than with your standard forced-air system, where the air rises, cools and then falls to the floor.”

Source: http://home.howstuffworks.com/home-improvement/construction/materials/radiant-floor-heating.htm