Controlling my Komfovent balanced ventilation system through Home Assistant — opens up a world of possibilities.

Here are three automations I use to make the system a bit smarter 🙂

We got balanced ventilation installed last year, and have been very happy with the system 🙂 But we quickly found that we needed to expand it into two more rooms — the 1st floor bathroom, used as the laundry room, and the play room, which will be a bedroom at some point.

Time to fix that 🙂

We recently got balanced ventilation installed, and discovered that our ventilation unit has Modbus TCP/IP support. I even found a thread on the Home Assistant community talking about interfacing the C6 controller, which our unit has, into Home Assistant 😃

Here is my implementation 👇

Our house was first built as a log cabin in 1890, then extended in the 1950s, and again extended and completely renovated in 2000. It’s well insulated, and has no drafts — it seems to be relatively airtight.

Great for keeping the heat in, not so great for the air quality. Add the fact that we didn’t have a single fresh air vent, only those tiny trickle vents above the windows. What you are left with is a house with bad air quality.

So we installed a balanced ventilation system 🙂

I recently watched Jeff Gerling’s video on CO₂ levels, and how to monitor it. My home office is also in the basement, with no windows. So I paid attention to the air quality when setting up down here.

In addition to monitoring the CO₂ level, I’m also automatically ventilating the space when the air quality gets too bad.