Originally Posted by email@example.com
Ps: there are some good 12v frigs out there and truck frig is one of them.
I would use a 12VDC or 120VAC/12VDC fridge/freezer rather than a 120V residential. The extra draw of the inverter, even on standby, is just parasitic and provides no benefit when no other AC loads are required. No big deal when plugged into shore power, as any compressor fridge will draw relatively little power, but efficiency is obviously important when boondocking.
I'm not recommending any particular brand or unit, but the Norcold DV-0061 in my van runs on 12V unless 120V is present, at which point it switches over. If I disable the inverter, it runs directly from the battery and draws less current. If plugged into shore power, it uses that instead of DC power, which obviously is desirable. It draws 0.4A on AC according to the specs.
There's also a DC-only version of that same model, and there are other AC/DC units in their lineup. I believe there are other brands of DC fridge/freezers that use less current on DC, but my experience is limited to the one in my van, other than sailboat DC cold plate systems.