Dometic is now installing a small DC fan on the back side of some units - It is temperature-controlled, and runs when the ambient temp rises above approx. 80 degrees F.
It's a good idea, but the fan they use is small (80 mm?), isn't located where it will do much more than circulate hot air around the back side of the fridge compartment, and it runs at a fast, whiny speed.
The back side of the fridge acts as a sounding board, making the fan noise very noticeable inside the RV.
I'm considering replacing it with two larger fans, mounted on the inside of the RV's fridge air inlet grille. These fans would be connected in series, to minimize noise and current consumption.
