Patent ID: 6991532

Claim:
A method of controlling the undesirable effects of micro-organism contamination in a motor vehicle by: providing oxidant into the HVAC unit via an oxidant generator; maintaining an oxidant concentration of between 0.45 ppm and 0.1 ppm in the HVAC unit during a period of from about 4 hours to 6 hours in the HVAC unit; maintaining an oxidant concentration of less or equal to about 0.1 ppm at all times in the cockpit or passenger compartment of a vehicle; providing for a drain in the HVAC unit for removing oxidant or condensate during provision of oxidant into the HVAC unit; purging the HVAC, if necessary, to remove excess oxidant; shutting off the provision of oxidant into the HVAC unit or the cockpit or passenger compartment of the vehicle if the oxidant concentration exceeds 0.1 ppm in either the HVAC unit or cockpit or passenger compartment of the vehicle; thereby reducing the amount of odor and allergen that reaches the cockpit or passenger compartment of a vehicle.