Your refrigerator typically has a grille at the top or bottom that sucks in air. You need to remove this grille to look for cooling coils and a fan that needs to be cleaned. These pieces of the refrigerator typically collect a lot of dust and dirt. When these coils are not cleaned, your refrigerator has to work harder to keep things cool which means expensive parts of your refrigerator may fail sooner than their expected life and your energy bills could increase.
In order to perform this task, you first need to locate your refrigerator grille. This is usually either at the top or bottom of the refrigerator. Depending on the model, you may need a screwdriver to release the grille.
You also need either a shop vac or a vacuum cleaner, with a soft brush attachment to clean off the dust and dirt from the coils. Be careful not to bend the coils during the cleaning process.
Check out this quick video from Expert Village