changed out Norcold to Amish cooling unit

I would say an hour is optimistic. With 2 guys that have done hundreds before, maybe. Doing it yourself I'd set aside the better part of a day until you're done screwing around with it and cleaning up. At least that was my experience. I'm very happy with it, though. I got lucky and found a refurb'd cooling unit from Nordic on Ebay for $240 shipped. I also installed some circulating fans in the fridge - they made a big difference.

EDIT - like everything else, since I've done it before I could do it again in half the time....