Mine came with it
Don,My 322 (a 1988 model, and I'm the third owner) came equipped with a Dometic (MarineAir) 16K BTU unit already on board. It's installed below the lazarette, just aft of the fuel tank, and has a digital Passport II control head located near the nav desk. Lately it's been operating a little funky, but most of the time it can do the job of cooling the cabin quite well.If there's any specific questions I can help you with, fire away. I'm no expert, but I'll do what I can.Petes/v EmmieLou (O-322)Little Silver, NJ