My 27 foot Catalina sailboat came with a built in ice chest with little or no insulation. It is now storage for pots and pans. I have a solar system on the boat with 2 100 amp batteries and a 2000 watt inverter. So currently l am using the pure sine wave 117 volt AC to power the frig. I especially like that this unit is very efficient and cools quickly. It will be great to have onboard during our 100 degree days in the summer.
Hal Stoner