Bar none, I would not have installed a
propane / evaporative
refrigerator. When I removed the icebox, I installed a Dometic 2-way
fridge, which required cutting large vents into the
fiberglass shell. The vent covers never do fit well to the curved
fiberglass body, and there is no way to install a 2 or 3 way
fridge to comply with Dometic's specs.
Some time later, I discovered the high-efficiency 12-volt marine fridges with the Danfoss compressor, and switched out the
fridge. It doesn't require anything significant for venting, and certainly not to the outside. It will run for days on a 12v
battery and is virtually silent. With the optional power supply, it will also switch over to shore power whenever it is available, automatically. It also cools down much, much faster than the standard RV fridges.
This fridge eliminates any potential safety issues with towing on
propane, and there is no pilot to
light. Best upgrade I made! Unfortunately, I still had those big vents cut to the outside...