Planning of heating and ventilation technology for KfW 40-Plus single-family house

Can you please provide the name of the engineering office? Because I just realized that my heating technician has already commissioned the HL calculation and did not give any specifications, so it was carried out according to DIN... Can anyone here say if an HL calculation according to DIN (and installation plan) can be converted to different parameters? Or maybe I should open my own thread...

What is so bad about it being done according to DIN?

DIN design is certainly not a problem. DIN temperatures are more so. My wife would certainly not accept 20°C in living rooms.

... What do you mean by that? Probably another hot water storage tank, since both the flexoTHERM and the aroTHERM only have 190l tanks. In my opinion, that is too little for a 4-person household. And otherwise, of course, controlled residential ventilation.
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