I have a Norcold portable freezer/refrigerator that was standard with the coach when new. It fits in the basement bay and runs off of either 120 volt (from the inverter/converter) or straight 12 volt from the house batteries. I built a "dog house" from 2 inch thick construction foam to improve the efficiency and I haven't noticed any significant power draw overnight while dry camping. We use it to store frozen food and ice. It uses a standard Freon refrigeration system, not a solid state or propane. It works great.