Bests & Worsts Reviews from Amazon

I put this filter in my bedroom to cut down on dust and just have cleaner air. It works well if you keep your expectations realistic. I run my ceiling fan to stir the air in the room and run the filter for hours at a time during the day at high speed. Remember to clean the air, the air must move around the room and go through the filter. So I run it on high during the day and shut it off at night. Works for me. Now I can see almost no dust in the sunbeams that come through my window anymore, whereas before I could always see a lot of dust. There is still some dust on the furniture though, just less. Regarding a smell: The first time that I ran it for 8 hours it left a smell. Only happened once and never again. Regarding fan noise: Low setting is almost silent, medium setting is low fan noise, high setting is loud fan noise (think any typical box fan on high). All these reviews about "the fan is so loud it sounds like a helicopter! My ears bled!" is nonsense. It's just a fan. Other features: The features are intuitive. Button lights can be shut off completely. Buttons do not make noise when pressed. Filter change is simple. All features are explained. Overall great product.