My Airdog Pro has been working beautifully since the day it arrived. It was easy to set up, and easy to connect to my phone app, which appears to work perfectly with no ads. The indicators are perfectly clear, after a cursory reading of the instruction manual, and the unit seems to correctly detect higher levels of particulates in the air, adjusting accordingly (in auto mode). I have not yet needed to clean the filter, but that part doesn't appear difficult, based on the instructions and a quick examination of the parts involved. I couldn't be more pleased!