Which heat pump? Ventilation system / Air-to-water heat pump

Yes, my information includes all heated rooms. By the way, you said I had poor insulation and then wanted to know the HT value - don't twist things, okay? Stick to it: Stupid...

Ok - you are right and I have my peace.

By the way, you can plant on the plots above without any problems. Or do you all not plant a tree because the drinking water pipe goes into the house at that point? (It is made of the same material as the brine pipes and lasts forever).

Don’t you have any idea or are you just trolling completely? At least in my case, a drinking water pipe goes into the house at one point (total area approx. 0.3 sqm), with a water temperature around 10 degrees. A collector is area-wide (where it is installed) and often has significantly negative temperatures in winter, which the brine/coolant releases into the ground; often energy is taken from the phase transition of water in the earth to ice. Therefore, nothing that roots deeply grows where the collector is. And the energy certificates/the KfW data don’t really have much to do with the heating load. And, as far as I remember, Sebastian has a full basement. from on the go

Or do none of you plant a tree because the drinking water pipe goes into the house at that spot?

Probably no one will intentionally plant a tree over pipes.

Thanks already for your general comments on the heat pumps...

If anyone can say something about the individual models: please do! Otherwise, my husband and I haven't really made much progress yet. We had a long conversation with an energy consultant, who tends to prefer the exhaust air heat pump for cost reasons (with the supply air module, it would probably be equivalent to a ventilation system). He assumes that it will provide sufficient performance for our house, as it will probably only consume 6 kW.
He tried to talk me out of the wood stove...

I wouldn't want to blow 6kw over hot air..

from on the go