Works like a charm.
I wanted to wait awhile before giving a review so it'll be as honest as possible. I really do love it! I ordered two for my 600 sq ft apartment. One for my bedroom and the other for the living room. I no longer have horribly sinus issues. I just moved to Seattle so my allergies were acting up pretty bad, these have helped so much. You can barely hear them when they're on low speed at night. Kind of like white noise if you're someone that doesn't mind a subtle noise in the background when you're sleeping. Haven't had to order any filters yet, so that's a good thing. I would totally recommend.
Rating: 5 stars