Hello, today I just realized that if I want fine control on my heating system using external sensors (temperature and window, for instance), I need to get rid as soon as I can of my all Tado devices: Tado Thermostat X, Tado Bridge and Tado smart valves.
I just recently installed a Vaillant boiler as heating system for hot water and radiators: I know that the boiler is not compatible with Open Therm (yeah, second bad choice) but the price was very good and the performances are awesome. At the moment the Tado thermostat is connected as simple relé in order to switch on or off the boiler, then the boiler itself should modulate the flame accordingly to the water temperature in the system.
Now, assuming that the only option I have is to use a simple thermostat as relé to turn on or turn off the boiler depending on the request of the radiator valves, which simple thermostat is very home assistant friendly? And what about radiator valves? I’ve a sonoff zigbee dongle, so I prefer such devices.
What about Vaillant thermostats? Are they compatible with home assistant? If yes, I could think to install one of them, in order to get the boiler in fully moduling operation mode and not in ebus; then, I assume I can “connect” the radiator valves to the Vaillant thermostat using home assistant, in order to have a full smart installation while the boiler can module its behavior.
Last question: I guess that if I want to use smart radiator valves, there’s no way to keep the whole system working if home assistant goes offline: if this is the case, I need to setup a second home assistant system as backup.
Thanks in advance for the replies!