If it's the blue cruisair then IIRC they're a standard/common tecumsah compressor that you can just order straight out of the Grainger catalog. The white cruisair condensing units, I don't know much about, in large part because I would never swap a blue cruisair for one. I do know any a/c shop can install the compressor if you bring them the new compressor and the unit, it took them 30 minutes for the one on my sea ray. You have to bring it with you though, if they try to call cruisair they'll tell them the only option is to buy a whole new condensing unit.