If your Samsung refrigerator is experiencing inconsistent cooling or frost buildup, it could be due to a malfunctioning defrost heater. The DA47-00564A is a genuine Samsung refrigerator defrost heater, designed to help manage frost by properly cycling through defrost periods. This metal sheath heater operates at AC 120V and 250W, ensuring optimal function for your 3-door or 4-door French door refrigerator. Before purchasing, verify your device's model number for compatibility.