Honeywell Air Purifier, HFD140, 170 sq ft, ifD Particle Washable Filter, Allergen, Smoke, Pollen, Dust Reducer

The Honeywell QuietClean? Air Purifier uses a patented . 3-step permanent filtration system to help make the air cleaner in medium/large rooms of 170 square feet. The patented ifD? technology uses electrical power to help capture up to 99.9% of the following microscopic airborne particles: dust . pollen . pet dander . dust mite debris and smoke.1 As air exits the purifier . molecules are charged to create ions which attach to these particles floating in the room. Those particles get pulled back into the air purifier and pass into the electrically charged ifD? filter that is permanent and washable . saving you time and money on replacement filters.