Radiator in the new building?

@DerDa: even though nothing can really be compared. Your number helped me get a rough idea. And even if it sounds like it, I’m not naive enough to rely on it for our possible new construction project. In my opinion, the heating is a crucial component nowadays. Especially because you can’t change it quickly again. And don’t get the impression that we sit cold in spring, summer, and autumn with two small children, our rental house has a conservatory. And it heats the living area and the kitchen for us. In midsummer, we even have to be careful to close it off towards the house, otherwise it gets unbearably hot... as soon as there is some sun, we live in an excess of warmth, or at least can if we want to.

Stay on the ball, then you will know when the time comes what you want. Building a house can require some decisions in a very short time. If you only start to get informed then, wrong decisions are pre-programmed.