[Land Yacht]

I would guess that you will find the engine heat core in that box. Is there engine coolant hoses hooked up to it? My '93 has an air inlet for the dash hvac in the floor near the passenger seat. The air goes in there and then circulates through the engine A/C evaporator, then through the heater core , then through those 3" air hoses to the dash vents.

As I read old posts, I am thinking that there is a heater core in the box which comes from the AquaHot. I need to take a closer look from different angles because I could not see heater hoses from the angle of the 2 pictures. We will use the coach this weekend and need some heat (low 45 degrees at night). Maybe I can figure this puzzle out :-)