KfW 55 without underfloor heating

No, I don’t perceive it that way. The question was: Is KFW 55 possible with radiators because we don’t want underfloor heating, don’t like it. Answers mostly go in the direction of the counter-question, why on earth do you not want the wonderful, modern, adapted to the new way of life, always nice and warm underfloor heating?

Exactly. But not to proselytize, rather to draw out the motivations. To find out on this basis whether it is really a desire to convince. It sounds to me in several places as if these are rather diffuse fears, as if prejudices were true. Then better stick with what grandpa already knew (although: that would then be the coal stove). The remark, watch out, without underfloor heating you push your house on the real estate market back to the seventies, I find appropriate. So at least not inquisitorially proselytizing.

But Grandpa certainly still knew decency and politeness [emoji2] Mobile greetings from on the road

I see it the same way. You come here with an opinion and a question, but instead of answering the question, they try to change the opinion. Somehow, this stands out extremely in this forum. Some people also get extremely annoyed here when you question that. You are a healthy exception to lighten up the forum,

I think it’s nonsense...

Larger distances mean higher flow temperatures, which is equivalent to higher consumption.

Two systems, meaning FBBH and radiators, mean more control and higher temperatures for the radiators, which equally corresponds to higher consumption and higher investment costs.

So what’s so brilliant about investing more money and having higher operating costs compared to a nowadays common low-temperature underfloor heating???

P.S. "Perceived" warm feet (à la electric underfloor heating) only exist from 0 degrees outside temperature; anything else is a poorly adjusted heating system. Or a house not built according to the Energy Saving Ordinance

I may answer like this: if someone needs a shorter reaction time when heating and the floor pleasantly warm for barefoot in winter, FBBH is then GENIAL. More investments compared to underfloor heating not necessarily (depending on BU). And everyone knows that radiators need higher flow temperatures for heating than underfloor heating, which means higher heating costs. And when it comes to investments and heating costs, you should never build KfW55, because the money you invest in KfW55 you never get back and that is definitely a FACT. I have mentioned FBBH here as a third possibility for heating (if it is suitable at all for KfW55), maybe that could also be interesting for wutzebaer. Ultimately, the builder will decide for themselves.

But Grandpa definitely still knew decency and politeness

Yes, yes, the youth. They were already scolded in the year 400 for being worthless. I just forgot whether 400 was before or after Christ.