The Advanced Pure Air Shield Air Purifier with UV-C provides optimum air purification and air cleaning while reducing maintenance and saving you money on energy. It features a 9-stage detection, diagnostic, filtration, and purification system. The Air Shield is the newest model from Advanced Pure Air, a recognized leader in home air purification. By building on years of proven performance by our Advanced Pure Air brand of air purifiers, the Air Shield represents state-of-the-art performance and features, while at the same time gracing the home or office with an elegant stylish design that provides whisper-quiet operation. The Air Shield is the ultimate air purifier for individuals and families who are looking for optimum germ, dust, pet dander, and allergy relief. Our product is backed by toll-free technical support for as long as you own your Air Shield Air Purifier.