IF you want to do it without a generator or significant solar power and a good battery bank, yes - a residential frig is a bad idea. A single wet cell house battery will often last only one cold night running the furnace fan alone.
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015