One of the most basic things that anyone can do to keep their refrigerator in good shape is keep the condenser coils clean. Depending on your refrigerator, you will find the coils on the bottom, back, or top of the refrigerator. No matter where the coils are, you should always start by unplugging the refrigerator before you begin any maintenance.
You can use a coil brush and a vacuum to tackle any dirt or dust that your coils may be holding on to. You can brush and wipe the coils clean ever so often to ensure that the coils do not overheat and overload, which can cause your refrigerator to stop cooling altogether. This is one of the most important refrigerator maintenance jobs you can perform to prevent larger repair problems later on.