It's just okay. It wasn't as amazing as some of the reviews have led me to believe. I'm not noticing amazing differences in my allergies or household dust/pet dander. I do like that it can detect odors on the auto setting and quickly turn up the fan to eliminate them. Is it worth this much money? Probably not. But I haven't found a reasonable alternative for a better one. The lower fan speeds don't seem to do much at all.


UPDATE: After a couple weeks of use, the motor of this product is making some sort of annoying squeaking noise.