The Bionaire has made our apartment's air lighter. Before we got the air purifier my husband used to snore so bad that I would say he woke up the dead. But now he sleeps all night without snoring and waking up like he is choking and out of breath. Moreover for me this air purifier helped me be able to go to sleep without taking sleeping pills. Also before I invested in the Bionaire I tried the Oreck for thirty days and my husband was still snoring and choking when he woke up at night, so I sent the Oreck back. To show you how much I love the Bionaire Permtech, when I was visitng an eye doctor at his office he had an Oreck and his office still had an odor and I told him my experience with an Oreck and how I truly appreciated the Bionaire. He took the imformation down where I bought the Bionaire from and said they were going to buy two of them like I did.