Slab floors are heated by embedding heating elements directly within the concrete before it is poured.
Radiant Heating of Concrete Slabs
The most common method involves using radiant heating, where either electric heating coils or water-filled PEX tubing are installed into the concrete slab. This setup transforms the concrete slab into a large, evenly heated surface.
How it Works
The process of radiant heating ensures the thermal mass of the concrete effectively becomes a large, low-temperature radiator. Heat is then radiated upward from the floor, gently warming the entire room. This method distributes heat evenly, avoiding hot and cold spots often associated with other heating systems.
| Heating Method | Description |
|---|---|
| Electric Heating Coils | Electric resistance wires are embedded within the concrete. These wires convert electrical energy into heat. |
| Water-Heated PEX Tubing | Flexible PEX tubing is laid within the slab, through which warm water is circulated to heat the floor. |
Key Benefits of Slab Heating:
- Even Heat Distribution: Radiant heat rises evenly from the entire floor surface, eliminating cold spots.
- Energy Efficient: Slab heating can be more efficient than traditional forced air systems, especially with the thermal mass of concrete.
- Comfort: The gentle, radiant heat is considered very comfortable.
In summary, heating a slab floor effectively uses the principle of radiant heating. By integrating either electric coils or PEX tubing within the concrete, the slab is turned into a low-temperature radiator for even and comfortable heating.
