Bests & Worsts Reviews from Amazon

I love it so much I bought another right away. I run these 24/7 in my 400 square foot living room and a slightly smaller bedroom. I have animals and since I started using these, there's a lot less dust and dander on the floor and other surfaces. I love the pre- filter..mainly because I can see the dust it's filtered out of the air and it's very gratifying (yes, it gets alot and I vacuum more than once a day),but also because it just works, and well. The pre filter is easy to clean (I use s Dyson dust attachment). The air just feels cleaner. It's not particularly noisy, about the same noise level as a large box fan. It's better looking than its predecessor (5200). I recommend not buying the OEM filters though, I found the non branded generic work just as well, at half the price...which matters especially when you are running 4 of these around the clock. Arrived as promised and was well packed.