Why would you ever be without refrigeration? It could be voluntary, such as moving to an off-grid property, or it could be involuntary, such as the electric power grid going down due to a natural disaster or terrorist/war act. Perhaps your refrigerator will quit working at a time when you can’t afford to replace it, or you just want to lower your electric bill or make less of an impact on the earth. Whether it's voluntary or involuntary, it's a good idea to have some back-up plans and information, just in case.