I love my new BISSELL air400 Air Purifier. It does exactly what it says it will do and purified the air. I have it in my living room and when I come in from my bedroom in the morning my nose is all stopped up from allergies. I turn on my air400 Air Purifier and in no time at all my sinuses are clear. My next step is to buy a air400 Air Purifier for my bedroom to get rid of the allergies and dust floating around. Also clears out any cooking odors. I don't know how I ever lived without my air400 Air Purifier.