Combine air-water heat pump with water-carrying wood stove

So it means you need an oversized photovoltaic system, plus about €4 worth of firewood every evening (+ constantly stoking the fireplace), just to be happy about the low costs of the heat pump? ROFL

The photovoltaic system was the best investment in the whole house. Anyone who limits themselves to 10kWp and lets themselves be talked into a 10kWh storage cannot do the math.
The beech firewood costs me not a single cent, except for muscle power and some gasoline.
As I already wrote in one of the earlier posts, the alternative was not installing a wood stove at all.
But that is not the topic of the discussion. The question was and remains how the two systems can be technically well coupled together. And when the utilities soon reach €0.50/kWh, we’ll talk about this again at -10°.

And what could you earn from the wood if you sold it accordingly? How much extra did the system with water circulation including buffer cost? How much does the regular chimney sweep cost? 2 or 4 times a year?

2 buffers, at least 3 pumps and 1 mixer. Let's see which values you achieve there in real heating operation.

The beech firewood doesn't cost me a single cent, except for muscle power and some gasoline.

Not you. But 99.99% of all people do. So don't sugarcoat a system that only makes sense in isolated cases (even if the property is not economical). Everyone who has to buy wood + pay the basic investment calls the system crazy.

2 buffers, at least 3 pumps and 1 mixer.
Let's see what values you achieve there in real heating operation.

Where does it say anything about 2 buffers, 3 pumps and a mixer??
Additionally, there are two pumps, one buffer and no mixer. The heat pump works directly in the heating circuit. Can you understand that?

Not you. But 99.99% of all people are. So don’t praise a system that only occasionally makes sense (even if property is not economical). Everyone who has to buy wood + pay the initial investment calls the system crazy.

I am not praising a system that occasionally makes sense, but rather the one that represents the most effective solution for me. My actual additional costs are definitely lower than what a ring trench collector would have cost me if I had done it myself, with dubious results in purely gravelly soil.

Following your argument, 99.9% of all homeowners should better not have a wood stove in their living room because it should only be operated for economic reasons? Then we should also let all firewood, i.e. 99.9% of it, rot unused in the forest to emit CO2 unused? Or should the affected forest owners and the state all switch to wood chips with district heating? Or heat completely with wood, even when old?
But the main thing is that a deep borehole for 18k, which is then heavily subsidized by the public, can be praised highly.