For sure, currently im using such a setup in my house. However i have quite dumb system, when boiler temperature is driven by the coldest room (or a room where i’m currently in) and the rest ones are controlled by wall units. Its working great, even felt some gas economy. All my radiators has thermoelectric valves which i can control. Currently in a few weeks i start to work on my setup to turn it into fully automatic, because for now ‘master’ room is defined once and thats it, and i want my system to track setpoints and decide itself which room gets ‘master’ and drive boiler accordingly. And i think i’ll use a node-red for automation because writing complex logic and conditions gets damn hard in HA and much easier (at least for me) in nodered blocky style or javascript code.
Also you can get some ideas from here.
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