I'm in the midst of a resolving issues with my builder over the installation of a new split system that is spec'd out to be Goodman/16 Seer. I posted these photos to give the forum an idea of what part of my situation is. I'm not a DIY, just a homeowner trying to get smarter on what is considered to be a "proper installation". Any advice or comments on the installation would be appreciated.
What about plenums for the air handler connections to supply and return?