Klima-Anlagen-Reiniger, air conditioner cleaner. Properties. This is a specially developed product for professional cleaning of air conditioners from fungus and bacteria. Not only does it clean, but also has excellent air freshening properties. It is tested for microbiological safety of a human. Application. Turn the air conditioner off. Adjust the heater fan on the minimum revolutions. Spray 2/3 of the product on the evaporator, preliminary removing the cabin filter (if it is available). and 1/3 into the air ducting. You can also clean through the condensate drain holes. Wait for 10 minutes after application, dry the air conditioner with the heater turned on at the maximum temperature. Car windows must be opened when the product is used.