This purifier has changed my life for the better. My wife and I both suffer from many allergies. We purchased 2 surround air purifiers-i in the bedroom and i in the living room. @ days after using this product are lifes changed for the better. We can now -live life as you should-no sneezing,congestion,coughing and medication.What a relief.This product is small -very little noise-easy to clean,cost effective.I would reccomend this to any one with allergies.One of the best products I"ve seen! Very cost effective forelief we have recieved.