If you're trying to save some money then let me echo the "run fridge on propane." Years ago I decided to run the RV fridge all summer. When I got the first months bill it was $30 greater then other months. I figured the main fridge was failing and needed replacement (since it was getting loud.)
We replace that fridge with no change in the monthly bill. I went out and bought a
Kill-a Watt unit and tried to track down the problem.
Took awhile to find it, but it turned out to be the RV's absorption fridge. That is a very inefficient design, and was costing $1/day to run on electric.