A:Answer I bought 3 of them! I might buy some for my second home or extras for every bedroom. I closed one up in my room-sized, walk-in-closet and it definitely cleaned the air. The filter lid is indeed difficult to shut and requires hitting it hard to close. I haven't had to replace the filters, yet. Sometimes, it makes a high-pitched whistling sound and I am not sure why. Other than that, they serve the purpose. Someone I knew paid $300 for this unit elsewhere. I bought 3 from Best Buy for the price of one. [Sorry, the picture upload failed continously; I guess they didn’t want to give me an extra entry.]
