A few years ago I discovered the nest thermostat. It looked nice, is connected to the internet, self learning but a bit expensive and not so much documentation if it will work in Belgium nor with the boiler we have installed (Vaillant TurboTec).

Doing some research on the internet I figured that they have updated their system software and are supporting European countries including Belgium. A solution for the power has also been found by an ICY converter so it could easily be implemented in setups where no power is transferred over those wires.

So I had only to tackle …