501 Choose the optional SmokeStop Filter Kit for better protection from smoke and other airborne gases. This performance earned the 501 Best of Class ranking in independent AHAM testing of Clean Air Delivery Rate. per min. ft. ft.
Our efficient SurroundAir™ vent system delivers exceptional air exchange (up to 500 cu. 1 micron particles on Speed One, including allergy-provoking pollen, dust mites, mold spores and pet dander. ) without annoying drafts. BlueAir is the system for people with allergies, asthma, other respiratory conditions, or for anyone who wants cleaner, more breathable air. 97% of the tiniest 0. Using patented two-stage HEPASilent™ Technology and the 3-stage progressive filter structure, it captures 99.
Value-adding features include a warranty and easy maintenance: simply open the unit's lid, lift out and drop in filters every six months.
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