The Whirlpool W10613606 Compressor Start Device & Capacitor helps provide the electrical support needed for reliable refrigerator compressor startup. This replacement component combines a start device and capacitor to assist the compressor when beginning its operating cycle. The start device helps engage the compressor motor, while the capacitor provides an electrical boost during startup, allowing the compressor to begin running properly. A properly functioning assembly can help maintain consistent cooling operation and reduce startup-related issues caused by worn or faulty components.