ᐅ Do radiators always need to be installed under windows in new constructions?

Steffi33 schrieb:

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Seeing your beautiful solution, I would prefer to have radiators as well. Now I have to ask a question that has been on my mind for a while: Did you design the interior yourselves, or did an interior designer handle it? And if you designed everything yourselves, where and how did you gain your experience, or were you simply born with excellent taste?

11ant schrieb:

Rethinking from the mainstream routine is "riskier" than what can be saved during purchasing.

Among other reasons, that is why I gave @Rumbi441 a like for his post. I believe it is important to question what seems to be "generally accepted" and to examine what I want/need, and whether a seemingly suboptimal solution may have advantages that outweigh the disadvantages for me. The weighting of pros and cons is subjective. That’s why this forum is so great. 🙂 You encounter a huge amount of knowledge, experience, information, and differing opinions here.
I admit that I am not neutral because, although we are building a totally ordinary house, we partially deviated from the mainstream; therefore, the concerns of the "nonconformists" are probably very important to me. ;-)

Rumbi441 schrieb:

We are worried that the underfloor heating might have a leak and something will need to be replaced in 10 years.

I understand this concern, as I have heard it myself several times. It would be interesting to find out how often this actually happens statistically and whether this concern is still valid nowadays or comes from "earlier times." Also, what solutions exist today for dealing with a leak in underfloor heating.

The risk of water damage is likely the same with all hydronic heating systems. We had the unfortunate experience of leaking pipes inside the wall. This happened back when I lived in a shared flat during university. It only came to light because the landlord had to keep refilling the water—the landlord eventually wondered where the water was leaking. We and the neighbors below had to move out for the repairs.

If you’re worried about water damage, electric heating might be a safer option. 🙂

oookkkay.. So, no screed and no underfloor heating to save costs. Basically: underfloor heating compared to "normal" radiators doesn’t save you anything, absolutely nothing. My brother-in-law is a building services engineer, and in larger projects—sometimes socially funded housing—they install radiators instead of underfloor heating solely to present these apartments technically as lower quality. In the end, they don’t save a single euro. Later on, there are no savings in consumption either, on the contrary.

But: If you want to save money and don’t want screed, just do it yourself. On the raw subfloor, install a substructure (from here on, please note all work is DIY, as it’s simple and that’s where the savings come in), then, for example, put down parquet flooring (second choice from the outlet). Make sure to insulate properly underneath the parquet with mineral wool. Done. That’s how I did it (not necessarily for financial reasons, but it was still cheaper). However, I don’t have conventional radiators but wall heating panels. If I were to build again, I would also install these myself.

There are “click systems” that are very easy to install. If something leaks: break open the wall, fix it, close the wall again. Not pretty but doable.
Or infrared heating, where no water flows, though that requires a rather generously sized photovoltaic system, which doesn’t necessarily reduce costs fundamentally but does require available liquidity first 😉

Which heating system is planned? Heat pump, gas, …

Are window recesses still common in new buildings? Usually, the wall construction has the same thickness everywhere for thermal insulation purposes, right?
However, I would also say that this approach is (unfortunately) going in the wrong direction! The energy carrier for >40°C (104°F) supply temperature is becoming increasingly unattractive, and costs will continue to rise in the future.
Are exhaust air heat pumps not an option?