Blueair 501 Hepasilent Air Purifier

Blueair 501 Hepasilent Air Purifier Purifies a room of up to 620 sq. ft.; operates so quietly that an onlight lets you know unit is operating, Uses the same amount of energy as a common light bulb making it one of the more energy efficient units available, Instead of normal glass or paper fiber filters units use environmentally safe polypropylene waterproof antimicrobial filters, Traps 99.97 of all airborne allergens and pollutants at 0.l microns industry norm is 0.3 microns, Comes with a standard particle filter or optional filter for heavier odors; 10yr. warranty