I love this air purifier! Shark products really are the best. I have horrible allergies and this has really helped. I love to leave my windows open during the day to let the fredh air in and often that led to lots of allergens in the air. I got this and turned it on and it instantly started cleaning the air. I could already tell a difference by dark. I had less of a stuffy nose at bed time. Also I loved grilled cheese and popcorn, both a little on the dark side which creates a little smoke, this thing instantly starts to clean it up and after a few minutes no more smoke smell! It is also a lifesaver on fajita night to get the lingering smell of onions and peppers out of the house. Seems to be great quality and made very well. I also love the eco mode on it to save on electricity!