I've been eyeballing this problem space for a while now and came to the exact same conclusions as you did, KNX for everything "important" + Home Assistant for nice to haves.
Just waiting for the build a house/completely renovate an apartment to put it to practice.
Can you give some more information about the sensors you use, especially for CO2/VOC measurements?
Just waiting for the build a house/completely renovate an apartment to put it to practice.
Can you give some more information about the sensors you use, especially for CO2/VOC measurements?