It was mentioned recently on this forum,PB is dead right and I can back it up from personal experience.
Remember also that an electric fridge is on day and night and during the hot weather will be running more or less 24 hrs a day.The motor will be red hot and could be dangerous.Gas fridges are initially expensive but at 10 - 15 euros a month to run you'll soon recoup your cost.It should should keep ice cream solid,Mr Whippy sort of solid.