wrote:
Option 2) There is a lot of rust around evaporator coil so replace the
evaporator coil. Since the requirements have changed, he suggested
that replacing coil will also mean replacing the condenser unit (both
13 SEER) to ensure compatibility. Price estimate ~$3000 for parts and
labor.
What does rust have to do with anything? Aluminum does not rust, copper
does not rust. What is rusting? Certainly not the coil. Not to say there
isn't a leak in the coil, but I've never seen a rusted aluminum or copper
coil.
I'd probably go with option #3