I recieved this Pure Zone HEPA Air Purifier,as a product test from Tryitsampling. This PURE ZONE Air Purifier fan runs so quietly effectively, I like that the product has multiple functions that will remove harmful toxins in my home so we can breathe cleaner air with the 3 in 1 HEPA technology. The unit has sleep and auto shut off features .The unit will be easy for me to maintain and replace the
                    filter.