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Keep your evaporator coils clean with Nu-Calgon Evaporator Cleaner Aerosol! This powerful cleaner is specially formulated to remove dirt, oil, and rust deposits from small air conditioners, HVAC cooling coils, and refrigeration equipment. The aerosol spray can be used on both copper and aluminum coils, ensuring effective cleaning without damaging the coils. Plus, the 18 oz. size is perfect for use in small spaces or limited access areas. With Nu-Calgon Evaporator Cleaner Aerosol, you'll enjoy improved performance and efficiency from your HVAC system while extending its lifespan. Make sure to keep this handy can on hand for all of your evaporator cleaning needs!