Radiant Floor Heating - System Components In general, flexible plastic PEX tubing is installed either in a concrete slab, under a sub-floor or over a sub-floor, or a combination of these depending on the room. A liquid, either water or anti-freeze, is pumped through that PEX tubing to transfer heat. The water can be heated with a boiler (gas, oil or electric), a water heater, a geothermal system or a solar panel – or a combination of these. Typically a plumbing manifold is installed between the heat source and the PEX tubing to regulate liquid distribution. Temperature can be controlled with thermostats, sensors and even sophisticated control panels. Multiple zones can be created to allow different temperature settings in various parts of the building or even individual rooms. |
Like any heating, ventilation and air conditioning (HVAC) system, radiant floor heating systems are comprised of several components – which can vary depending upon the complexity of the system and the space being heated. 
