The 501 effectively purifies air in rooms as large as 620 square feet. Using patented two-stage HEPASilent technology, it captures 99.97% of the tiniest 0.1 micron particles on level one, 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.
Easy maintenance: simply open the unit's lid, lift out and drop in filters every 6 months. Choose the optional SmokeStop Filter Kit for better protection from smoke and other airborne gases.
- Retains 99.97% of particles down to 0.1 micron, including pollen, pet dander, mold spores, dust, and other common household allergens
- Produces absolutely no ozone
- Virtually noiseless - perfect for bedrooms
- Energy Star certified for low energy consumption
- Ready to use right out of the box - just plug the unit in
- Easy filter replacement - no disassembly required
- Superior quality and award-winning design
- CADR rating: smoke 388, dust 377, pollen 378
- Air flow rate: 88 to 450 CFM
- Power consumption: 35 to 90 watts
- 6 air changes per hour (620 sq. ft. room)