KfW40 house offer with AWP and controlled residential ventilation, is it any good?

The heating load calculation has nothing really to do with the energy consumption of the building anyway

What does this have to do with the thread again? We should leave it at that before you talk yourself into trouble. To get back to the car, the heating load has about as much in common with energy consumption as the manufacturer's specifications have with what you pay at the gas station. A 5 Series won't turn into a Prius.

Ultimately, I am now definitely smarter than before. AWP = no go! LWWP = good If the energy values are as promised on paper, it should be feasible with electricity and I can save myself the gas connection. Whether to eventually put solar thermal on the roof or possibly photovoltaic, I can still decide later.

Whether you eventually put solar thermal on the roof or possibly photovoltaics, I can still decide then.

This is also simple: solar thermal: no go – especially in combination with a heat pump. Photovoltaics almost always pays off as long as the subsidies are still available, regardless of the heating system.

okay then that is set I think the empty conduits that the FH provider lays to the roof are anyway more suitable for cables than for water pipes.

What does this have to do with the thread now? We should leave it at that before you talk yourself into trouble.

That has something to do with your flawed argumentation. But nice try.