Defrosting systems are mechanisms used to remove ice or frost buildup from appliances like refrigerators and freezers. These systems help maintain optimal temperatures and improve energy efficiency by ensuring that cooling elements are not obstructed by ice. Common types of defrosting systems include manual defrost, where users periodically remove ice, and automatic defrost, which uses heating elements to melt ice at regular intervals. In automatic defrost systems, a timer activates a heating element that warms the evaporator coils, causing ice to melt and drain away. This process typically occurs during off-peak hours to minimize energy consumption. Proper maintenance of defrosting systems is essential for the longevity and efficiency of cooling appliances.