GT3000 Professional-Grade Advanced Air Purification System by GreenTech Environmental Incorporating photo catalytic oxidation technology, high level negative ionization, safe levels of ozone, and electrostatic filtration Using four advanced technologies, the GT3000 helps to eliminate Odors, smoke, pollen, dust, bacteria, mold, carbon monoxide, pet dander Four advanced technologies to destroy pollution from the air, embedded in walls, ceilings and other surfaces Helps to sanitize everything in the house and reduces or eliminates all odors, including cigarette smoke, mildew, cooking odors, and more