Air Conditioner Capacitors

Air conditioner capacitors are small, cylindrical objects that store energy, similar to a battery. Found in virtually every air conditioning system, they play crucial roles in the functioning of the A/C motor, fan, and compressor. The capacitors store electricity and have the ability to rapidly release it during peak demand periods, such as when the motor starts.

There are two major types of capacitors used in air conditioning units: the start capacitor and the run capacitor. The start capacitor provides a large initial boost to start the motor, while the run capacitor provides a steady charge to keep the motor running. Both capacitors work together to keep your unit functioning properly.

Start capacitors are generally larger and designed to hold a charge long enough to start a motor, and typically disengage after the motor reaches approximately 75 percent of its full operating speed. Conversely, a run capacitor is smaller and engineered to maintain a constant charge to keep the motor running as efficiently as possible.

Air conditioner capacitors are made out of a durable material, and they feature insulated wire connections for safe operation. Most models are designed to withstand high heat conditions and offer long-lasting service. They are usually encased in a metal housing for robust protection and are found next to the motor in the compressor unit of the air conditioner.