Hi everyone from HA community! I am student of computer science and I have chosen topic related to HA as my final bachelor project - "Home air quality monitoring and automated ventilation control". Is here anyone who has any experience with that (especially the recuperation units/ventilation) or someone who is interested in personal try? I'd like to make a specification based on data from sensors (like CO2, VOC, humidity, temperature etc.) that the ventilation control depends on. I would be grateful for all your ideas! Also I would love to test the final solution after making specification and design. So anyone who could help me or is interested, let me know! Thank You very much!
#Home air quality monitoring and automated ventilation control
strong hemlock
heady mica
I built a number of air gradient diy units with additional tvoc and atmospheric sensors in them. I don't make automated actions on it though (thermostats do frustratingly nothing when in air cycling mode). I do have co2 notifications though and have taken manual action when I got those. I'm also keep an eye on pm2.5 values since I do soldering and have a laser cutter which both contribute a lot to that value
I also do use the iaquk hacs integration to get a general air quality metric that way. I also have a number of bme680s with their gas resistance sensor that can give an air quality index value, but that's a bit more amorphous and I'm not sure much of what goes into those values.
sick tree
My home has a forced ventilation system (https://www.zehnder.nl/nl/ventilatie/warmteterugwinning/zehnder-whr-930), pumping air into living rooms and pumping air out of utility rooms (kitchen, bathroom, toilet, etc.). Traditionally such systems are hand controlled using a turn-selector: 0, 1, 2 and 3. We had a moisture issue, with water condensing on the inside of the windows because nobody ever switches the ventilation on and off...
So I put air quality sensors in the kitchen, living room, bed room and bath room plus I put 2 switches on the ventilation unit, replacing the switch. Next I added some scripting and in the begining teh fans used to be on at full speed most of the time, but after something like 2 months, most of the water was pulled out of my house and the fans started behaving more normal. Other than replacing the filters ever 6 months or so I never need to look at the air any more and it feels so much better in my home now!
I measure a lot of things, but I only use the AIQ (from esphome BME680 sensors) plus relative air humidity for controlling the fan speed. If you want to we can share data and I can give you my code. Plus maybe, if you want to, I can let you run some tests on my system?