I have the opposite problem here in the north during summer time. I will leave the OK door closed during the week (at seasonal site) with fridge on. If I don't turn thermostat down before we close up for the week, the heat build up inside the closed compartment causes the compressor to work overtime, which has caused some soda cans to freeze and explode. Nice mess.
I am considering cutting a vent hole on the wall behind the fridge and installing a grated vent into the bunk room. It would be easy to do, but would put some of the heat inside. I think this would be easier than running a vent pipe to the roof.
