10 Best AC Unit Coil Cleaners 2026 in the United States

The Simple Green Foaming Coil Cleaner is a professional-grade liquid cleaner designed to remove dirt, grease, and grime from AC coils and other similar equipment. Its non-caustic, non-flammable formula is a big plus, making it safer to use around sensitive machinery and food processing areas, thanks to its NSF registration. Because it is self-rinsing on condensate-producing coils, it reduces the need for extra rinsing steps, which simplifies the cleaning process. The cleaner is unscented, which is good if you prefer no strong smells during use.

The Simple Green Foaming Coil Cleaner is a chemical cleaning agent designed specifically for AC coils. Its foaming formula helps cling to coils for better cleaning, making it effective at removing dirt and buildup. One of its strengths is that it is unscented, which can be more pleasant for indoor use and less likely to cause irritation. The product comes as a liquid in a gallon-sized container, weighing about 5 pounds, which should last for multiple cleaning sessions but might be a bit heavy to handle for some users. It is made in the USA and is a well-known brand in cleaning products.

The Zep Foaming Coil Cleaner is designed to make it easier to maintain the evaporator coils on HVAC and AC units, using a convenient aerosol formula. One of its biggest strengths is its professional-strength cleaning capability, which allows it to quickly penetrate and remove soil from coil surfaces, making maintenance simpler and more effective.