Classic 500/600 Series DualProtection Filter

I’ve had this for a couple years but I noticed within the first year that the WiFi would just lose connection. My disappointment is with the wifi connection and the fact that the unit does not automatically reset when new filters are installed. I’ve done all the steps to try and connect it, but I just manually turn it off and on each evening. Also, there’s a high pitch whirring that started up even though I’ve kept it clean and swapped filters in a timely manner.

2 1/2 stars - they have a chemical smell i don't like and i wonder if the chemicals can possibly be good for me, if they smell so bad. so i only run my air purifier when the air quality is particularly bad, especially smoky. they're very effective for the smoke! but i run them so rarely, i leave them unplugged most of the time. since i don't run them constantly (one on each floor) i'm in a quandary about the every 6 month subscription - as the boxes are stacking up.

I have 4 Blueair purification filtration products; 1) Classic 605 Dual Protection 2) Blueair Aware (monitors content and uses Bluetooth to turn Air-filters on 3) Pro L Series two of these sweet babies 4) Sense + Air purifier This is all in a 1,200 square foot Trailer in the desert 50 miles from Mexico. The COVID(19) I take care of on my own.