Abstract: A refrigeration holding pack for use with a refrigeration system is provided for providing nonobtrusive hold-over refrigeration capability to the refrigeration system. The holding pack is configured to be externally mounted to the refrigeration coil assembly of the refrigeration system without the necessity of breaking into the refrigeration cycle of the system. The holding pack includes a sealable plate having a plurality of heat transfer fins disposed therein. A hold-over refrigeration system for use on recreational vehicles and marine vessels is also provided. The system employs a holding pack configured to be secured against a refrigeration coil assembly. The holding pack may be portable in nature or secured to the coil assembly in a more permanent type arrangement.