What is it?
Applied efficient boiler system to outdoor heating
лучистое отопление пола котлом
While conventional heaters emit more heat than needed and disappear quickly, ondol heating has a significant amount of heat in the process of heat conduction.
Similarly, this is a feature you can find in a masonry heater or tile stove with comfort and energy efficiency. Only once or twice a day of heating can keep radiating heat for about 12 to 24 hours. Here, clay, stone, and bricks play an excellent role in storing heat.