In all our previous MHs we had Norcold or Dometic RV refrigerators. Summers in SoCal and Las Vegas did create a significant problem for keeping things cold. Ice cream was out of the question. The little battery fans were useless. Personally, I don't have the self control to keep the frig closed until absolutely necessary, and know in advance what I want and where it is. Just not me. We did try to cool things before putting them in the frig. Whenever possible freeze things before putting them in the frig. Put six bottles of water in the freezer, then move them to the frig. Since you can't use the freezer for ice cream you may have room. I was told (though I don't know if I believe) that an RV frig should keep things 40 degrees below ambient temperature. Well, in Las Vegas 110 is real possible, so where does that leave you. Try to find a spot where the frig is not on the East or West getting direct sun. Really perishable foods, like that BLT with mayo might do better in an ice chest with a block of ice. I know, doesn't sound right for an investment like a motorhome or TT, but it is really all the technology will handle.
Happy Trails.
