[BusNit]

I did purge with nitrogen while soldering. I used the new process with Harris flux and StayBrite silver solder. I am sure my connections are fine but there's oil in the fins. I couldn't tell you what the shop used. Coil with metal flange is 18 x 12 and is 3 row. Bottom fitting is 3/16 OD and top is 1/4 OD  I inquired today at www.premierproducts.net as they have a 22k btu low profile 48v roof air. Honestly, that intrigues me since it would be super easy to wire it into my battery bank and the power consumption should be as good as a mini split while kicking out some good air. I called them with my questions and they will speak to their engineering department tomorrow. Even so, As I calm down from scrapping my existing units, I wouldn't mind gathering parts. If the bedroom one let go, I really would be up the hill without a paddle, boat, engine, bicycle... You name it! The rear one blows incredibly cold air. Front ones never were that great to begin with. I appreciate your help. That said, please enjoy your vacation. Marie canceled our trip up north. This bus ain't goin' anywhere this summer.