Dirt, dust, and pet hair can clog up refrigerator coils, restricting air flow and causing the refrigerator to work harder to keep cool. Once or twice a year, use a handheld vacuum to clean the coils and suck up any loose particles. The location of refrigerator coils varies by model, but most can be found either behind the kick plate (the front panel near the floor) or at the rear of the fridge.
Source “https://www.google.com/amp/s/www.huffpost.com/entry/diy-appliance-maintenance-tips_n_1879423/amp”
Dirt, dust, and pet hair can clog up refrigerator coils, restricting air flow and causing the refrigerator to work harder to keep cool.