I’m a homeowner and I’m remodelling a '60s house that needed new HVAC, and new roof. I had the rooftop HVAC installed first, because the installer recommended to install it BEFORE the new roof is installed.
Now when I hired a roofing company, they were horrified that the AC unit was installed first, and they said the roof ALWAYS goes first, and I need to pay extra to lift the AC unit and the conduit for the electrical. He said he had 30 years experience and the roof ALWAYS goes before the new AC.
But when I went back to the HVAC installer, he was pissed that I questioned his recommendation, and that the roofer he works with ALWAYS installs the roof after the AC.
Who is right?