Patented V5 filtration provides the best solution for gas and odor elimination by combining two types of media – one that adsorbs odors and gases, and another media that changes the pollutant to an oxidized form. Granular activated carbon adsorption eliminates volatile organic compounds (VOC), which are responsible for odors. Pelletized chemisorption destroys harmful chemicals such as formaldehyde by an oxidation process inside a chemically active alumina pellet. And the V-shaped media chambers allow for higher airflow than comparable units. The result is the ability to trap a broader range of gaseous contaminants and odors than conventional room air purifiers.