Air-water heat pump current consumption and data

Transfer efficiency of underfloor heating to screed or to [Fertigfußboden] could also be significantly different.

Transfer efficiency of underfloor heating to screed or finished floor could also be significantly different.

Maybe. Except for the bedrooms, we have tiles everywhere. The tiles conduct heat much better.

Whereas Bookstar said that his floor structure is actually the same. Maybe something is different in the processing on his side? Well, I can only dream of your energy demands anyway. I hope that at least through the hassle I had with the demanding heating planning, I get relatively more efficiency out of it. For me, at least it pays off because the house has higher demand...

I would like to join in here.
Here are the data:
200 sqm house.
Modulating 8kW air-water heat pump with 100L buffer and mixing pump group.
ERR on.

Heating curve:
18° = 25° return flow desired
0° = 30° return flow desired
-15° = 33° return flow desired

Consumption at -2° ambient temperature over 24h was 29kWh
Average run times 5 hours per cycle.

Bathroom = 22.8°C
Remaining rooms = 22°C

Considering that you had so much trouble at first and actually a suboptimal installation, you can be quite satisfied. You managed it well...

For someone who first had so much trouble and actually a suboptimal installation, you can be quite satisfied. You got it well under control...

Absolutely. If it stays like this, then it's good.

I just don't know what to do sometimes when the ERR shuts off due to a room temperature over 30 degrees caused by solar gain with open ÜSV.

I tried turning off the actuators before New Year's Eve, after that everything ran messily again. Well, whatever.