pnichols wrote:
I 'think' that the OP may have been referring to a solar powered fan for improving the refrigerator's exterior air flow - not the little fans that only circulate air inside the refrigerator.
If this is the case I'd recommend first getting the refrigerator, or how the RV manufacturer installed it, checked out. I'm not aware that all RV refrigerator installs usually require exterior fans to increase exterior air flow if they're built-in correctly such that natural convection moves air from the lower RV wall intake opening up past the back of the refrigerator and out a large enough opening in the roof.
So far, ours has always operated fine in any kind of (high humidity or low humdidity) heat - if: We don't load it up inside too much, we keep the RV level as we should, and if we have it's 5-level thermostat control set to 4 instead of 3 in extremely not weather.
In my experience it does fine until the temp is in the upper 80's to 90's, especially since I had direct sun on that side otherwise it cools just fine. The highest temperature I saw in the direct sun was 40-42 which to me is a danger zone for some foods I had in there. If moving a bit more air in the chimney makes a difference I will work with that.
After all the comments I am looking to add 12v fan to it either from the bottom first then the top if the first option does not pan out.