Simple Air EZ Green HVAC Coil Cleaner, Aerosol, 19-oz. is a professional-grade solution for removing soil build-up on HVAC unit coils. Its vigorous foaming action effectively loosens and pushes out soil without damaging the unit. This non-toxic, biodegradable, and odor-free cleaner is safe for both indoor and outdoor units, including AC condenser/evaporator coils, fan blades/blowers, electronic filters, electronic air cleaners, and vent grills/registers.