There is only one true way to completely protect an HVAC/R system from corrosion, and that is to effectively e-coat the heat transfer coil with ElectroFin® E-Coat, and then thoroughly coat the components and cabinet with Insitu® Spray Applied Coating. GulfCoat™ coatings provide a special coating system for added corrosion protection on aluminum and copper finned coils. By following the coating and maintenance instructions, GulfCoat™ coatings help to reduce the accelerated corrosion of HVAC coils.