Klima-Anlagen-Reiniger, an air conditioner cleaner. Properties. An air conditioner cleaner is a special fluid for optimum and efficient air conditioning cleaning without disassembly. It removes mildew and bacteria. When the product is used, the unpleasant odor is neutralized which appears during air conditioner operation due to fungus and bacteria reproduction on the A/C evaporator. Most manufacturers, e.g., Mercedes Benz, BMW, Ford, Opel, VW, recommend to conduct periodic service maintenance and cleaning of the air conditioner. Approved by VW. Application. For cleaning and disinfecting air conditioners, apply the product on the evaporator and air ducts. It is used with special tools, part numbers: 4090, 4095. Store at positive temperatures!!!