Non-Acid Coil Cleaner and Brightener has powerful foaming action that quickly dissolves dust and dirt deposits. The Non-Acid Coil Cleaner cleans from inside out and strips off harmful insulating deposits. The Coil Cleaner can be diluted with a range of up to 20 parts with water. Non-Acid Coil Cleaner and Brightener is easy to use and contains bio-degradable surfactants.