The PURAFILTER 2000 Coil Cleaner is a professional grade aerosol foaming cleaner. This product is designed to clean HVAC evaporator and condenser coils and protect coils with built-in corrosion inhibitors. Easily cleans coils to maintain your HVAC systems efficiency. Use throughout the year for regular DIY maintenance, at a minimum, every Spring and Fall. FROM THE MANUFACTURER This coil cleaner and heat pump coil cleaner is professional strength. Easily cleans and removes soils and buildup on air conditioner or heat pump coils. Evaporator and condenser coil cleaner. 14 ounce aerosol can, foamy, biodegradable, no fume formula.Great for cleaning fan blades, drain pans and other heavily soiled surfaces. Self-rinsing on condensate producing evaporator coils. Helps to maintain HVAC system energy efficiency and system life. 360 spray nozzle – even works with can upside down. Easily rinses or wipes away. Commercial grade cleaner with foaming action to help penetrate and lift heavy soils from coil surfaces. Designed for use on HVAC condenser and evaporator coils.