It was easy. My son helped me take out and put the fridg back in. It took me from start to finish about 2 hours. The fan that they use is a low end 12 volt fan that is real noisy. The fan is an option to the fridge so if you want you can pull the fuse in cooler weather, its located outside behind the vent. If you look here Dometic 1350 fridge
at the end of the post you will see images of my work. I used a variable speed silent fan that speeds up as it gets hot.
2013 Prime Time 230 FBS
Days camped in 2013: April to November
Days camped in 2014...about 40
Days camped in 2015...more than 2014!!