you would probably benefit more buy unplugging in hot weather than in cold. in cold weather it is less work to keep the inside temp down, so it uses less power. it's the opposite in hot weather, motor needs to work a lot harder
they don't work properly when temp too high or low. eventualy they fail. you can now buy a refrig that's spec' for garages..if it was mine i would un-plug during winter. it short cycles and gets harder for comp to come on w/o auxillary heater.
We have one that we have out on the deck at our campground, we leave it plugged in and have never had a problem, although things sometimes freeze in the winter. BUT one thing I would like to mention, if you do unplug it, MAKE SURE to keep the doors open at least a couple inches to keep air flowing and MOLD OUT!
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