Do radiators always have to be placed under the windows in new buildings?

Thank you for your feedback. Heating on site is done with district heating from a biogas plant, but that doesn't really matter, does it?

At that time, we were told that heaters should be placed under the windows; it saves space and, moreover, the warm heat from the heater rising probably prevents the window frames from cooling down too much and forming water there. I unfortunately cannot say if this still applies to well-insulated houses. Btw, I can understand if you use normal radiators, it’s nothing bad :) and with local heating it’s certainly very uncomplicated.

Hello TE,

The radiators are installed under the windows because, as someone else already mentioned, the windows are cold bridges in the room. Since the "cold" air that comes through the windows falls downward, it is guided through the grilles at the top of the radiator, heated there, and then exits at the bottom as warm air, which rises again in the room.

Apparently, this is the most economical option.

Wall radiators can of course also be installed. The mode of operation then is radiant heat.
Also possible is surface heating in the wall, underfloor heating only vertical.

Best regards

Heating on site is done with local heat from a biogas plant, but that doesn't matter, does it?

How do you come to the conclusion that it could be irrelevant in a heating question whether you yourself have access to your boiler?

Thank you for your feedback. Heating on site is provided by local heat from a biogas plant, but that doesn’t really matter, does it?

It is relevant in that they (I believe) often operate at higher temperatures than one would with their own heat pump. This makes some points raised here against normal radiators, because they assumed a rather low flow temperature, almost irrelevant. (Please correct me if I’m talking nonsense here :))

No, that's true as long as the biogas plant (probably the most future-proof of all local and district heating suppliers) delivers affordable energy. It only gets annoying if you design the heating system for the high supply temperature of the local heating and it then simply stops delivering it at some point. This is likely to happen to many houses connected to coal power plants in the next five years. So it's better to build heat pump-compatible right away. These solutions are practically never cheaper than heat pumps either, but they save space and sometimes you are forced to accept them.