Yes, the architect also has specialist planners by his side. But a good architect familiarizes himself with the various techniques and does not let the installers chisel at a fresh house with the Hilti, where he can also plan the breakthroughs. And quite right, most of the time he is not as skilled in any of the techniques as if they were directly part of his area of expertise. That is exactly why I would become suspicious if an architect adopts any marketing nonsense - whether it is that of the sellers or that of the detractors. If the client says, "I want to heat with raspberry juice," then the architect should write it down exactly like that and discuss with the contractor how to imagine the piping through the building with this technique. But that also means including in the bid evaluation that one deals with a functionality and its references. You don’t get rewarded for this effort if such a planning contract remains a one-off case. That’s why many architects "prefer to do the flag thing," as it is nicely put in the Sparkasse commercial.
Also regarding architects (and heating technologies), my mantra applies: not to retrain a red brick mason into a white brick mason, but either to tailor the product to the installer or vice versa, but never to let a winemaker brew beer. And in the orchestra, the conductor is indeed a "load-bearing wall," i.e., in the wheel of the specialist planners, the architect is the hub and must achieve "good chemistry" with all the spokes. And of course, an architect should not say yes and amen, but also not what the peasant does not know, that he does not eat.
Meanwhile, various discussants here have explained what a vast field of complex considerations a heating concept is. It should have become clear that one cannot simply let an architect plan a house blindly according to the "always done that way" method and think that if you then replace on one square meter of the house connection room what the architect otherwise planned with a kryptonite reactor, you would have catapulted the house into the modern age with this singular module. An exhaust gas turbocharger is of no use at all to an electric motor; there you have to think differently even at the auxiliary system level.
since I often read that the lifespan of a Riemchen construction is not the best.
What is a Riemchen "construction"? - Riemchen are clinker cut into slices and are therefore not built up in masonry, but glued on, i.e., they adhere less with their underside to the layer of bricks beneath them, but rather like tiles with their back to the wall. They are therefore not a masonry shell but a wall cladding. C´est tout - there is nothing inferior about that. Questionable alternatives are only panels with foamed or printed fakes, which I, however, would not call clinker.
The idea of never having to take care of the facade for the rest of my life was extremely pleasant to me.
Run a virus scanner over your acquired half-knowledge before you write a wish list to the architect with it. The notion that any maintenance effort would simply run off a clinker facade is a popular myth. On a mottled Mettwurst clinker you see dirt only later than on snow-white plaster.