Lightair Signature IonFlow 50 Air Purifier - Gold Proven Efficient - removes airborne particles from mold, dust, smoke, pollen, bacteria, virus, pet allergen and more for rooms up to 650 square feet Filterless  no expensive filters to replace, instead, a reusable collector that you easily wash in water Totally silent air cleaner  so it wont disturb your activities Energy efficient  uses 10 times less energy than most of the other air purifiers. Removes airborne particles from mold, dust, smoke, pollen, bacteria, virus, pet allergen and more for rooms up to 650 square feet Filterless - No expensive filters to replace, instead, a reusable collector that you easily wash in water