So, today I noticed that on one of the buildings we service, right on the ocean, only 20ft tall building, the 2 units closest to the water had the fins basically flaked off. I am not sure whether this was caused by a d'bag tech before me not washing chemicals off properly, OR if the fact that they are closest to water and only 2 units whose coils face the water may have caused this. We are replacing a different 2 units there next week and I am thinking about delaying and looking into some sort of treated fins or something. Any suggestions/thoughts?? And does a coil that got wrecked by chemicals look any different than one that got eaten by salt water?

^Sorry, my english is not very good looking tonight. lol