Underfloor heating vs. flat radiators

Yes, that is the case, as I already wrote yesterday.

Whether I think that is good is another matter :) I have no idea about the subject, but if experienced people say here, also regarding consumption, that underfloor heating is better, that is of course an argument. Visually and suddenly anyway without alternative.

But so far we have not had good experiences with underfloor heating in the rental apartment here, and that makes me very critical about it. It simply seems that there is no "one" temperature setting that ideally regulates the temperature. When the heating turns on, it becomes warm within a few hours, but in a way that is too warm, the air is not pleasant and you definitely want to ventilate. But that quickly lowers the room temperature and the underfloor heating kicks in again – it gets even warmer. At least that is how a craftsman once explained the problem to us here.

Typical case of: "Uh yeah, we always do it like that"

Probably just designed to reach the necessary temperatures in the bathroom without regard for all the other rooms and with a regulation where the heating itself gets dizzy from all the swinging back and forth...

Whether I think it's good is another matter :) I have no idea about the subject, but if experienced people here say that, also in terms of consumption, underfloor heating is better, that is of course an argument. Visually and space-wise, it is anyway the only alternative.

We consciously decided on flat radiators.

Because we don't like/ can't tolerate underfloor heating.

There would have been significant additional costs.

It's true: The visual argument – we have mitigated this by appropriately placing the (by now almost tiny in a KFW-70 house) radiators. There is no spot where a radiator is in the way.

It is also true that the gas boiler loses 2-3% efficiency due to the higher required flow temperature. So be it: It has been and still is comfortably warm here, since August until yesterday we used about 340 cubic meters of gas for heating and hot water. The radiators, which I operate with a maximum low flow temperature of under 50 degrees, produce a good, pleasant warmth; lowering the temperature is possible but I try to keep it minimal, as it doesn’t help.

It is also true: Underfloor heating would be wonderful in the bathroom; back then I opted out because of double workload and extended construction time.

The floor temperatures in our house are around 20.5-21 degrees (IR thermometer) with room temperatures of about 21.5 - 22 degrees everywhere. There is no question of icy floors; if there were something like that outside, I already walk barefoot. Residents and guests feel very comfortable in the house.

Even if it is unfashionable: I/ we would choose flat radiators again, not underfloor heating.
An individual decision – against fashion, against the mainstream.
Let's leave it at that.

Thorsten