LightAir Style IonFlow 50 Air Purifier - Silver Proven Efficient - removes airborne particles from mold, dust, smoke, pollen, bacteria, virus, pet allergen and more for rooms up to 540 square feet Filterless - no expensive filters to replace, instead, a reusable collector that you easily wash in water Totally silent air cleaner - so it will not disturb your activities Energy efficient - uses 10 times less energy than most of the other air purifiers