What function does a capacitor serve in HVACR systems?

A capacitor in HVACR systems primarily serves to store and release electrical energy. This function is essential for various applications within the system, particularly in starting and running motor-driven components, such as compressors and fans.

When the system is powered, the capacitor charges up and stores electrical energy. When it’s time for the motor to start, the capacitor discharges this stored energy to provide an extra boost of power. This helps the motor to overcome inertia during startup, ultimately enabling smooth operation. Additionally, capacitors contribute to the overall efficiency and stability of electrical systems by improving power factor and reducing the load on the power supply.

The other options represent functions that are not typical of capacitors in the scope of HVACR systems. While enhancing electromagnetic fields does involve electrical components, it does not capture the primary role of capacitors. Converting AC to DC is the function of rectifiers, not capacitors. Lastly, while capacitors can influence voltage levels in certain contexts, their main role in HVACR is specifically related to storing and releasing energy.