Plant extracts

An air purifier is a device which removes contaminants from the air. Air purifiers for residential use are commonly marketed as being particularly beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke.Commercial grade air purifiers are manufactured as both a small stand-alone unit, and as larger units that can be affixed to an air handler unit (AHU) or to an HVAC unit found in the medical, industrial, and commercial industries.