This product is designed to use on most any coils such as window air conditioners, roof top HVAC units, auto radiators, small air cooled equipment, small condenser and evaporator coils, metal filters, fan blades, and more. This is non-flammable and water based. It is fortified with corrosion inhibitors to prevent metal degradation. It will not harm drain pans, plastics, or other materials. It is self-rinsing on condensate producing coils.