Dear enthusiast homekit.blog,

In my house I use a Junkers Cerapur TOP30 condensing gas boiler. We have been using it for 12 years with its original two-wire thermostat (installed in the living room). Each radiator in our house is controlled by a single circulation pump. Sometimes we have the situation of a cold bathroom or a study room on the north side of the first floor, while the living room is the desired 21 ° C.

I was thinking about the next solution and I was wondering if I would succeed. We hope someone can give me advice:

Netatmo sells smart HomeKit compatible thermostats and smart radiator valves. I could replace the original Junkers thermostat with the smart Netatmo one and install a Netatmo smart radiator valve on each radiator. The living room is at the desired temperature of 21 ° C, but in my study room it is too cold. Then I give the HomeKit app on the iPhone the command to heat the study room to 21 ° C. Since my living room is already at 21 ° C, the thermostat activates the Junkers boiler, the smart radiator valves in the living room close, but the one in the study room opens. In the study room the temperature rises to 21 ° C, the living room is still warm enough, so the radiator valve in the study room closes and the boiler stops heating until another room requires heating.

Is that how it works or am I a little too enthusiastic?

Thanks,

Gert