Why are modern houses so warm?

Yeah, I'm messing around with it right now, just have to wait 1-2 days each time.

I don't know the spacing, the underfloor heating elements were cast in the factory. And installed on site in one piece with the construction crane.
I can't quickly find any info in the construction service description either.

The floor isn't cold, just thought you'd notice it more.

we don’t feel the underfloor heating either. Only at the spots on the tiles where there is no underfloor heating underneath can you tell that there must be some in other places. After moving in, I had the heating curve set higher to get rid of the construction moisture. Then you can definitely feel the underfloor heating, even if it’s only 2-3° in the flow temperature.

If it is too warm everywhere, I would lower the heating curve a bit more

Why are the room thermostats set to 23 degrees?

I am not familiar with your heating system, we have a gas condensing boiler but none of our ERR are set to 23 degrees.

Can you also turn it down?

Set room thermostats high and keep the heating output low, this way you don't lose unnecessary heat in the buffer. Recommendation here and in other forums.

Sounds somehow like a hydraulic balancing hasn't taken place? But you also need information for later, such as the length of the heating circuits and the installation spacing should also be available to you as information.

Were finished panels then laid with screed or how should one imagine that?

The discussions about the settings of the underfloor heating are very interesting.

Today I found that I cannot lower the flow temperature of our gas condensing boiler below 30 degrees. The flow temperature often measures at 27 degrees but it cannot be set lower manually.
Our hot water is maintained at 45 degrees.

We are quite satisfied with the temperature of the floors and the rooms so far. Two bedrooms still need to be lowered by one or two degrees. There, it is always 1.6 degrees warmer than set with ERR.
Therefore, the heating engineer will come again to change the water flow.

: I will measure the floor temperature of several rooms later. I first have to find the device again in the mess of the garage. Why are men often so messy in the garage?