If you are looking at buying a coach with a residential refrigerator there will already be a good inverter installed and a large enough battery bank to support its use. I usually have to run my generator 2-3 hours in the morning and I always run it a few hours at night since I am going to have the lights and TV on and need power for cooking. That gets them topped of before bedtime. I don't dry camp often but the residential fridge does not slow me down a bit when I do. My GE Profile (yes, they are the same ones that are in homes) is now 15 years old and still going strong. Oh yeah, I have not defrosted it even once in all of those years and it has filtered ice/water through the door plus 20+ CF of storage. Full time without one? Not a chance!
