The Bi-Polar® 2400 plasmacluster air purifier is a small unit about the size of a mobile phone that easily installs into almost any air conditioning unit. It quickly reduces allergens caused by mold, bacteria, and viruses and replaces the contaminants with healthy, breathable air. This positive and negative ionizer also removes harmful volatile organic compounds (VOCs), particulates, smoke, pollen, dust, static electricity, and much more. It is the best choice for customers interested in an environmentally friendly way to easily eliminate indoor air contaminants. Our ionizer air purifier is durable, made in the USA, and comes with a three-year limited warranty.