I also agree with Rusty, We have had three different 5th wheel trailers, two with the RV style fridges. One unit had the Dometic RV fridge, worked fairly will but would not keep the food real cold on a 90+ day. Our other 5er was equipped with the Norcold RV style, we had trouble with the control panel on that unit. Some times the unit would not switch over from electric to gas when disconnect from shore power and on Auto.
Our current 5er has a residential fridge in it and we love the unit. Works great and will keep food cold even with the inverter shut off. My wife usually turns this on when the truck is hooked up and the legs are retracted, the inverter is in the same compartment that has the control panel for the leveling system. She forgot once and when I checked that compartment I over looked that the inverter was off, so we drove 8 Hours with the fridge not operating. When we got to the campsite the inside temp of the fridge was 40F and the food was still good. I will never purchase another RV without a residential fridge in the unit. Now if they would only start installing a small residential stove my wife would be really happy.