The Whirlpool WPW10253821 Evaporator Fan Motor is responsible for blowing air across the evaporator coil to ensure that the temperatures inside the refrigerator are regulated. It works by taking cold air from the evaporator and circulating it in all the compartments to avoid temperature changes. This makes it possible to keep the food fresh for a longer period while minimizing on the formation of frost. It is made for functionality and sturdiness to enhance energy use and ensure the right flow of air.