Heat pump is not compatible with a water-bearing fireplace

The parts are also simply very imprecise. It is just a bi-metal that switches on and off.

Therefore, set everything to (von mir aus bis auf Schlafzimmer und Speisekammer) and then later carry out the thermal balancing via the heating circuit distributor.

We now have it set to 2 in the rooms where we don't need heating (storage, pantry, bedroom).

Our thermostats (Busch-Jäger) work in 5-degree increments, i.e. 2 is 10 degrees, 4 is 20 degrees, and 6 is 30 degrees

Seems like a great heating system. But we were already more advanced than that 50 years ago.

So unfortunately it is now too cold in the bathroom (21.5) and also in the living room without the stove... In the bathroom we would like 23-24 degrees. What should we do now? Increase the heating curve and the set temperature?

Do you not have an additional radiator in the bathroom? We were advised to use electric towel radiators exactly because of the underfloor heating (inertia etc.), which can heat up quite quickly when needed. Even if the heating loops are laid closer together in the bathroom, that is often not enough.

We were advised to use electric towel warmers precisely because of the underfloor heating (inertia, etc.),

Who advises purely electric supplementary heating? I think the heat pump is the ultimate.

Heating with electricity from fossil fuels generates about three times more emissions than local combustion of fossil fuels in central heating systems.

In the winter months, you could also just put a few old oil radiators in the house. Powered by green electricity, even more environmentally friendly. They will make it nice and cozy warm when the heat pump can no longer manage.

Who advises purely electric reheating?

In our thermal insulation verification, it is a fixed part of the calculation. It is really no secret by now that the low flow temperature alone is not sufficient for the bathroom. So not that the bathroom is heated solely by the electric radiator...

Who recommends purely electric auxiliary heating? I think the heat pump is the ultimate.

Heating with electricity from fossil fuels causes about three times more emissions than local combustion of fossil fuels in central heating systems.

You might as well put some old oil radiators in your house during the winter months. If operated with green electricity, even environmentally friendly. They will make it nice and cozy warm when the heat pump no longer manages.

Have you really understood the principle of underfloor heating? Are you aware that a heat pump also consumes a bit of electricity? And who says that we use electricity from fossil fuels?