How does a capacitor function in an HVAC system?

A capacitor plays a crucial role in HVAC systems by storing and releasing electrical energy as needed. This characteristic allows capacitors to manage and smooth out the electrical flow within the system, which is particularly important for components such as motors and compressors that require additional power during startup. When a motor starts, the capacitor discharges, providing a boost that helps the motor overcome inertia. Once the motor reaches its operating speed, the capacitor can then recharge, ready to assist again when required.

This function of storing energy helps in reducing energy demand during startup and stabilizes the motor's operation, ensuring it runs efficiently. The ability to release energy quickly and then recharge enables capacitors to maintain consistent performance across various operating conditions in the HVAC system.