Air-to-water heat pump - Nest Thermostat

Hello everyone, Currently we are planning our building services. We will get an air-to-water heat pump and my husband saw these Nest thermostats at his brother-in-law’s and now he absolutely has to have them. Aside from the fact that these things are pretty expensive... how much do normal thermostats usually installed cost? There are probably all price ranges, of course... but I mean these normal white-gray boxes. Does anyone have experience with Nest? Does it only look good, or are these thermostats effective too? Can you tell the heating specialist "hey, skip your thermostats and install these here?" Thanks in advance for your help.

Ok... apparently no one knows these Nest thermostats. How about other smart thermostats? For example Netatmo or tado?

I know the company Nest, but I cannot say anything about their performance, quality, service, and/or data protection agreements.

I did not mention the last point without doubt. One should look closely at who gets what for what purpose and who might possibly be able/allowed to read along.

Nest now belongs to Google. I have heard about the fear of data extraction. But from my perspective, that is rather unfounded... furthermore: heating data is probably the most unspectacular data there is about me. But still, one should consider that, yes

Thermostats that fit into your switch program usually cost between 50 and 150 purely in material price. If it doesn't matter whether they fit into your switch program, there are thermostats starting from 20€.

I think the whole topic is still in its infancy. I wouldn't bet on it at the moment. The technology in this area is still too expensive and not yet proven long-term. And who knows if these devices can still be used meaningfully in a few years.

Interesting, yes, if you have the necessary money. But this is just the beginning of home automation. And then you should actually agree on one system and not everything is compatible with each other. And once you start with it, it can quickly become really expensive.

No matter the manufacturer: In a modern house, an ERR thermostat has no place...