I got tired of tuning the speed on air purifiers at home. Since outdoor PM levels can change up to 1000× in a single day, you have to adjust accordingly, and it takes a lot of attention to do that.
So I set up automation for that based on a few parameters: indoor and outdoor particulate matter levels (current and averaged over the last hour), noxious gas levels based on third party monitoring, wind direction and speed, and the weather forecast for the next few hours.
So I set up automation for that based on a few parameters: indoor and outdoor particulate matter levels (current and averaged over the last hour), noxious gas levels based on third party monitoring, wind direction and speed, and the weather forecast for the next few hours.
Probably doesn't apply to others here, though.