Ever since we got an RV garage, where we can keep the RV at home, we have left the refrigerator on 24/7/365. We keep basic foods, like condiments, in the frig and frozen foods in the freezer. We also keep clean clothes aboard, so if we get an urge to hit the road, we just add some beer and go. We've never had a problem with any frig in the three RVs we've treated this way. Just make sure your rig is reasonably level, if you leave the frig on.