American Air Scrubbers'™ photocatalytic oxidation technology is superior in efficiency and effectiveness to competing cleaning processes. Other processes utilize ozone, UV, activated charcoal, HEPA, electrostatic, or ionization filters. American Air's technology combines the best of these processes - rotatable reactor pads and UV irradiation with catalytic filters to truly cleanse, not just filter, the air.

• HEPA filters remove smaller particles than do the rotatable pads (used by American Air), however, HEPA filters require more energy to operate and have no germicidal action.

• Activated charcoal removes odor by adsorption but has no germicidal action.

• Ionization chambers place a charge on particles causing them to cling together on filters, air duct components, and walls but have no germicidal action.

• UV lights have a germicidal action and have cured sick building syndrome. However, UV light alone is not as effective as is the combination of UV and metal oxides such as TiO2.