We found leaking at the bottom of our gas furnace (95% efficiency) and finally got HVAC company in to inspect. They said there's no drain installed.

There's water damage in the few areas we can see (its installed in a closet) --- any suggestions? rip it out and get someone to install correctly?

We are out of warranty for the GC's work -- but really? WTH -- I mean a professional licensed contractor who couldn't do this right. Any suggestions in the way of our legal rights are happily accepted as well. This was a fully permitted General construction project.