Residential refrigerators in RVs have one outstanding advantage - they don't care about how many hours you run them when camping with your RV not level. For other reasons we always level our RV at campsites, so this is not an issue for us.
What absorption refrigerators used in RVs REALLY NEED is for them to be mounted hung on self-leveling gimbals -> a larger version of the cupholders used on boats. I would have paid more for our RV when new to have it come from the factory with it's Norcold refrigerator hug in an aluminum gimbal framework.
