The biggest problem with RV refrigerators is insulation especially on top of the Fridge. The top of the Fridge always has a space between fridge and structure of the Motorhome. This space should be filled with Insulation and most important a baffle should be at the end of that space (towards the back of the fridge) to facilitate proper air flow from the condenser tubes to the roof vent. If possible insulation should also be on the sides of the fridge. I did this installation recently and my Dometic stays at 36 Degree with the outside temp around 93 - 95
