Brink Flair 325 Heat recovery unit ESPhome modbus integration (~$5)

[kotrfa]

Nice, thanks for this, will link it from my post directly!

@Atlantis

I found somebody did this but using rather complicated setup with additional rPi that communicates with the HRU
Integrating Brink Flair HRV with Home Assistant

I wanted to use the straightforward approach using simply ESPhome. ESPhome can communicate with modbus devices quite recently ( October 2021) so that is probably why nobody went this route so far.

Yep, it wasn’t available back then and I didn’t manage to get it work .

bypass … I think it can be set using modbus aswell but I didn’t implement this

Yes, it can and works fine, same as other values. You can check my files.

Btw. it seems you are rediscovering some of the stuff from scratch, but I might be wrong.