I unplug my machines along with my computer and my double oven. We once had a repairman out for our fridge and he told me that when a lightening storms comes thru it would be wise for us to cut power on the oven because the repair on the circuit board would run around $1000. and guess who doesn't have that kind of money! We also unplug the TV. Oh, the fridge had to be replaced or we could have spent $978. to have it fixed....hence...the unplugging! (lol)