Do not fear replacing the coils in your refrigerator. It is a darn sight cheaper than buying a new unit. Study the installation instructions, which you can download before hand, exam the structural integrity of your refrigerator to make sure you don't have broken parts or cracks that would reduce the life of the refrigerator anyway, and contact the provider to discuss your concerns.
There is no reason to put another refrigerator in a landfill simply because the cooling coils have gone bad. Refrigerators use to last years without a problem. America has become a throw away society. Cheap does not always equate with Quality, and neither does Expensive. Check it out, if you can replace the coils, step out and do it.
