If you can, replace it with a good brand of 12VDC Compressor type. Get away from the absorption types. The new ones are very efficient, this is depending on size and configuration, separate two doors, or freezer inside behind big main door, then open little door. Those use more power as cold is lost every time door is opened, some have bottom freezer drawer which pulls out. The biggest issues is the size of the opening, which cannot be changed so you are stuck with that space limitation.