Ours stays plugged in year round. I keep the a/c set on 82 in the hot months. The residential frig stays on year round just like the ones in my garage and kitchen. I think it is better for residential frigs than shutting them down.
However, our fiver stays packed year round. The closet is full of both winter and summer clothing. The fiver is ready to roll at a whim. During the winter I use several damp rid buckets along with a small ceramic electric heater. It is under a shed out of the sun and weather.
Do yours like you feel is best.