Comment by turtlebits

AQ sensors add cost. I've also never seen a reliable AQ sensor on a air filter. I have several Coway which go into turbo mode at random times and a couple of others that never go above fan speed 1, even when my dedicated AQ sensor shows elevated PM2.5.

A dumb device without leds/screens/connectivity that I can control with a smart plug via HA is much easier to deal with.