Been in a discussion with another local Inspector about this. I’ve heard from other sources that in 2012 the code was changed that stated black rubber connections to the main plumbing system from the primary drain were no longer allowed. That only PVC connections were allowed. This is what I found in the code:
M1411.3.2 Drain pipe materials and sizes.
Components of the condensate disposal system shall be cast iron, galvanized steel, copper, polybutylene, polyethylene, ABS, CPVC or PVC pipe or tubing.
Obviously it is not required to be PVC as I was told, but I still see a lot of brand new homes with black rubber hose. What do you guys think?