Method and system for using an ozone generating device for air purification

An air purification system configured to remove contaminants from air in an air handling system, the air purification system comprising;

• an outside air duct supplying a flow of outside air;
• a power supply providing variable power to an AC transformer;
• an ozone generating device coupled to the power supply, wherein a generation rate of ozone is a function of input power from the power supply, the input power varying in response to the variable power provided to the AC transformer;
• an ozone sensor configured to sense a concentration of ozone in an air stream located downstream of the ozone generating device;
• a contaminant sensor configured to sense a concentration of volatile organic compounds in an air stream;
• an air handling unit drawing outside air from the outside air duct through the ozone generating device and to a supply duct for supplying supply air to a space;
• a return duct providing return air from the space, the air handling unit drawing a portion of the return air through the ozone generating device;
• a controller configured to (i) vary input power from the power supply to the ozone generating device to generate ozone at a plurality of non-zero, ozone generation rates, wherein the input power is a function of at least one of the concentration of ozone and the concentration of volatile organic compounds (ii) vary a flow rate of air through the ozone generating device as a function of at least one of the concentration of ozone and the concentration of volatile organic compounds.