I’ve had this purifier about three weeks. I have noticed significantly less dust in my home. 
I do not have a kit to test the air, but the slightest burning of toast, or cooking odors will shift this into turbo.
 It is extremely quiet, and easy to use. I wish there was some way it could be just as powerful but not as large. Took off one point for that. 
I purchased the silver filter and graphite color which look dimensional. It was a good choice.