We have a residential refrigerator and we boondock quite often. Our unit has a 2KW inverter that runs all the outlets in the coach. The only thing that won't run are the ACs, hot electric part of the hot water heater (gas works) and the engine block heater. We are a family of 5 so our electric usage is high. The kids have devices and so do my wife and I
We only have 4 GC2 6v batteries. We can last a day. We added 540 watts of solar so now we are golden. Almost all modern DPs have inverter generators. My generator is very quiet. Also diesel generators only run at 1800 RPM. That means they are much quieter than the gasoline generators that run at 3600. Bottom line just because a coach has a residential refrigerator doesn't mean you can't boondock. Residential refrigerators are quite efficient vastly more efficient than the propane absorption refrigerators are.