[pairodice]

Thanks John, I am not a very good welder but do have a friend who is… I will check with him. I’m hoping it is aluminum coated copper as you said… I’m now considering alternatives to this unit including rooftop ac and mini split units. I did find a unit that looks like it would work and my be as much cost/work as repairing this pig… the welder I took it to this morning said the ‘orange stuff’ was old flux and he didn’t want to weld it :-(