What I'm wondering is whether this "special fluid" sold at the AC specialty
shops is similar to chemicals used for other purposes, for example
automotive sprays for cleaning brakes, or fluids for cleaning stoves. After
all the evaporator coil and dirt that covers it is very similar to other
types of equipment. I don't imagine there is a molecule that is specific to
air conditioning. It would be more specific to removing dirt from metal
parts, I guess.