Review on Next-Level Air Purification: Germ Guardian WiFi Bluetooth Smart Voice Control Air Purifier with UV Light Sanitizer and True HEPA Filters for Allergies, Mold, Odors, Smoke, Pet Dander - 22inch 5-in-1 CDAP4500BCA by Andrew Sticher

Although they sent me the wrong and heavily used model in the right box first (I know, weird, right?), I received the correct model afterwards a few days. It seems to work well and the automatic particle sensor works decently. The only major downside I have is that I find it noisy. Even on the lowest settings, it has an uncomfortable high-frequency loud sound. I can only use it when I'm at work. I can't sleep with him for a second or even enjoy TV/movies/music. Perhaps the fan inside is the lemon for me, as most people say it's barely audible, but I'm very disappointed with that. Germkeeper even mentions that it may take a week or so for some of the sounds to resolve, but I had it. for months and it seems to be getting worse.