A simple concept that has been around for centuries, radiant heat. In-floor radiant heat has been used in homes, basements, garages, slabs for years; now you can have the same efficient heating with In-floor pool heating.
When a radiant heat system sends a hot liquid water or antifreeze through tubing embedded in the concrete pool floor, the liquid heats the tubing, raising the temperature of the concrete to about 100 degrees F.
Unlike a standard pool heater, the radiant system warms the water evenly from the pool floor all the way to the surface, maintaining a consistent temperature from bottom to top.
If you jump in a pool that's 10 feet deep, your feet are the same temperature as your shoulders. Operating independently from the pool's filtration system also saves energy costs, since heating the pool doesn't require turning on the circulation system. These systems work best for frequent swimmers since it takes two to three days to raise the water temperature from the low 50s to the high 80s. Once the water is close to the right temperature, the heater can achieve a 1-degree rise in about 1-2 hours depending on the size of the pool.
The average in-floor radiant pool heating system runs about $11,000.