A couple of questions about a 2013 Heartland Big Country.

vetplus40

Is the white unit in the living room area? If so typically the Big Country doesn’t come with two AC’s. If the white one is over the living room thinking this is the original factory supplied unit.

You could call Heartland with the vin#. They will be able to tell you the build specs.

I’m just speculating here. One of the units was added at a later date another idea previous owner had to replace the shroud and could only find white/black.

The roof question no idea.