The great advantage of underfloor heating is that the radiant heat is delivered directly to the person, whereas in the case of heating by radiators, the air in the room is heated first, and then the body.
Radiators have the disadvantage that the air in the room is circulated by heating, which means that dust and dirt are swirled into the air.
Especially for people allergic to house dust, underfloor heating is interesting: the dust remains on the floor. Since the heat is transported even into the smallest corners, practically no moisture is formed. The uniform surface heat also prevents, among other things, the growth of dust mites and the formation of mold. Thus, you can prevent yourself against chronic diseases caused by mold.
Ecologically, underfloor heating has the advantage that the temperature for the heating water can be kept low. This saves energy and protects the environment. Energy sources such as solar panels, heat pumps and modern condensing boilers can supply these low-temperature heaters. Heating water from a normal heating system requires twice the temperature for the same heat output.
Underfloor heating also pays for itself with the extremely long life and freedom from maintenance. With good quality and proper installation, you no longer have to worry about the functioning of your underfloor heating. Copper in particular offers you enormous security here. Copper is incredibly stable and does not experience material aging.
And remember: underfloor heating can also cool in the summer. To do this, simply use cold water instead of hot.
Back to the past
In the European area, the first floor heating systems were used by the Romans (hypocaustum). The construction consisted of a kiln (praefurnium), a heating room located under the floor, the hypocaustum and extractors for the hot air and exhaust gases. The kiln was usually located outdoors. The heating chamber consisted of brick towers of square or round slabs, stacked at intervals of about 30 to 40 cm and initially supporting a larger top slab. On top of this lay the large supporting slab.
The entire construction of the floor was about 10-12 cm thick. From the boiler room located under the heated room, the hot air flowed into the wall ducts (tubuli), which in this way also heated the walls. Only then did the air escape into the open air.
Archaeological findings in North Korea also revealed a system for heating floors. In Unggi, the region of Ham Kyung Buk-Do, practically intact remains of such systems were discovered in several ancient dwellings. Archaeology dates these systems to about 3000 years ago, around 1000 B.C. They bear the name Gudeul, which in turn comes from the Korean guun-dol (heated stones).
However, apart from the above-mentioned advantages, underfloor heaters also harbor disadvantages. In the next section I'll talk about them.
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