underfloor heating

This article is about the difference between underfloor heating and floor warming in the series “Hydronic Balancing DIY“. As I suspected underfloor heating in the kitchen of our example building and couldn’t find any documentation, I asked the manufacturer Oventrop to be on the safe side. They explained to me the function of the “RTL box” (more on this later).

It turned out that it is not underfloor heating, but floor warming with a return temperature limiter. This article therefore explains the difference between underfloor heating and floor warming.