i just keep my fridge in the shop for the winter to protect food from freezing and critters.
for the ice house discusion. i'm keeping my eye's out for old used, cheep, maybe free walkin cooler panels. if i assemble on the north side where all my snow sheds from the roof and direct it into the 4 panels. stomp on it and run water on it occasionally through the winter. make one big ice block with a fridge in the middle it could last until mid july. its ben 10below for a couple of weeks. ice block making weather.
for those in the cold north. if you take a radiator for a small car (soobie,honda, ect) connect 3/4 pex to it. insulate the lines and run a surpentine pattern in you fridge with a swamp cooler pump( super low watt), lines filled with 80/20 glycol water mix your fridge will stay cold. if you bury it about 4 ft down in the summer it will keep your fridge from cycling most of the time.
just some thoughts to keep you tinkering through the winter
cheers gordo