Is there still a need for a solar system at all with air-water heat pumps and photovoltaics?

The flow is for the underfloor heating, but this is about the hot water storage. We have 230l integrated into the heat pump, which is more than enough for bathing and showering afterwards, but still small enough to ensure there is always movement.

The supply line is for the underfloor heating, but this is about the hot water tank. We have 230 liters integrated in the heat pump, which is more than enough for bathing and showering afterwards, but small enough to ensure constant movement.

Yep, that's right, thanks!

Although there are also people here in the forum who don’t need 60°C as the target temperature (not supply temperature) for hot water, but only heat to just over 40°C, as far as I understood? Nevertheless, legionella in a single-family house is very, very unlikely, yes.

Do you also have underfloor heating and there no heat storage, but only your 230-liter hot water tank integrated in the heat pump?

Whereas there are also people here in the forum who don’t need 60°C as setpoint temperature (not flow temperature) for hot water, but only heat just above 40°C, as far as I understood?
Do you also have underfloor heating and no heat storage there, but only your 230-liter hot water tank integrated in the heat pump, right?

We belong to the group with 41-42 degrees, that is completely sufficient for us.
Yes, exactly, we have a large buffer with the underfloor heating, other solutions would kill efficiency. Otherwise only the 230L hot water tank.

Yes exactly, with the underfloor heating we have a large buffer, other solutions would kill the efficiency. Otherwise, just the 230l hot water storage tank.

Why is the buffer for the underfloor heating good for efficiency in your case? Usually, a buffer for underfloor heating is generally discouraged here.

The underfloor heating is the buffer

That's what I wanted to hear!