Blueair is the system for people living with allergies, asthma, or other respiratory conditions, or for anyone who wants cleaner, more breathable air. The 501 effectively purifies air in rooms as large as 550 square feet. Using patented two-stage HEPASilent? technology, it captures 99.97% of the tiniest .1 micron particles, including allergy-provoking pollen grains, dust mites, mold spores and pet dander particles. The efficient SurroundAir? vent system delivers exceptional air exchange (up to 500 cubic feet per minute) without annoying drafts, performance that earned the 501 Best of Class ranking in independent AHAM testing of Clean Air Delivery Rate ahead of the runner-up, Friedrich C90. Easy maintenance: simply open the unit's lid, lift out and drop in filters every 6 months. Filters come in sets of three - unit uses all three filters. Choose the optional SmokeStop Filter Kit for better protection from smoke and other airborne gases. Also includes industry best 10 year warranty.

• 4 fan speeds
• 6 air changes per hour Very quiet ¨C no louder than a desktop computer on the low setting HEPASilent filter technology traps particles using a combination of electrostatic and HEPA type filtration
• Length: 13 in Width: 20 in Height: 26 in Weight 35lbs Filter Life: 6 months

• Noise Level: 68 dBA on high
• Warranty: 10 years
• Availability: Usually ships in 24 hours
• Unit includes complete set of filters