The Fresh-Aire UV® TUV-APCO-MAG15-ER3 18-32 VAC Air Purifier is the award-winning air cleaning technology that combines the power of UV-C light with activated carbon and photocatalytic oxidation (PCO). APCO eliminates odors, toxic VOCs, and microbial contaminants from the air and air system. APCO MAG models feature a remote mounted power supply and a powerful magnet for mounting onto metal surfaces.