How do I remove rust from a central air conditioning unit that is outside?

Answer 1

Rust removal is a tedious and difficult job. You can try the naval jelly, but its messy. The best overall way to remove rust is to use a sandblaster and use sand or glass bead to blast the rust off. Be sure to prime immediately and paint.

Answer 2

naval jelly does a nice job or wire brush and a hose

Answer 3

hose and water