Awesome so far!
Ok, so this is day one and I've had it plugged in for about 13 hours so far in my bedroom where there was a lingering, light smell of cigarette smoke from the woman who lives beneath me.  Quite honestly,  the room smells fresh and I can no longer smell the smoke.  I've seen others comment that this unit makes a loud news,  but I'll have to disagree as I find that there's no noise short of a light hum (white noise). I'll give it a week,  but if it keeps up the good work I plan to purchase 2 more.
Rating: 5 stars