I looked into putting a residential fridge in my unit. None fit without modification. You could just plug it into 110 but when headed down the road I think the draw on an inverter would be pretty drastic when the compressor kicks in.
When my rig was new I had to put the Norcold on 9 in order for it to stay cold. I had an ice maker that never made ice more than one time when I first turned it on. Then it would fill with water and drive me crazy going click, click, click, click. With the Amish double coils I set the fridge on 4 and it stays cold. Plus it works on propane which keeps it cold while I am traveling.
So while I agree that a residential sounds appealing, I think the disadvantages far outweigh the purchase of the Amish coils to fix the Norcold.
