Control technology for underfloor heating - Are there intelligent variants?

Hello everyone,

I am looking for the most intelligent control option possible for a planned underfloor heating system.

In our current house, we have a fairly classic control variant: each room has a thermostat, and when a certain temperature is reached at the thermostat, the corresponding heating circuit is switched off. Since underfloor heating systems are known to be very sluggish, we operate the system almost exclusively using the return temperature and the mixer at the boiler.

Does anyone have experience with smarter systems for controlling underfloor heating?

The heating installation companies in our region are unfortunately not very helpful. They basically only install what their supplier designs for them. And the more complex the technology becomes, the more overwhelmed the companies are.

I am now wondering whether it makes sense to educate myself in some way or simply accept the standard that the installer installs.

Thank you very much for your help!

Does anyone of you have experience with smarter systems for controlling underfloor heating?

Yes, it's called hydraulic balancing and the renunciation of any further control.
Boiler/heat pump, return flow controlled with an outdoor sensor. That's all.

That's what it looks like. Smarter than being controlled by outside temperature and hydraulically balanced (in equilibrium), self-regulated, and hardly possible without ERR! (without shooting sparrows with cannons).

In other words, set it once and forget it. Always constant temperatures in the house with relatively low energy consumption.

At most, I would install an emergency brake in the warmest room or the room with the most south-facing windows, e.g. some thermostat with presence detection.

For our current house, the builder told us that there must be a second control level in the rooms, that this is a regulation. Is that correct? Or can you do without room control without disadvantages in terms of energy certificate, KFW?

I am considering whether to install some kind of circuit in the HKV so that I can turn the individual circuits on and off via network.

Yes, it is a (nonsensical) regulation. You can submit exemption applications or simply leave it out ... With the developer project, you will not be allowed to decide on that; only later dismantling remains.

I kind of expected that... do you have any idea how the exemption application process might work?

And does the second control level have to be physically on site, or can it also be done in the [HKV]? Then I could check what a minimal control technology there would cost.