The purpose of a hard start kit is to:

The purpose of a hard start kit is to provide additional starting torque. Compressors, especially in air conditioning systems, can experience a high amount of resistance when starting up due to the pressure differential between the high and low sides of the system. The hard start kit typically includes a relay and a capacitor, which work together to deliver an extra boost of electrical energy during the initial startup phase. This additional torque is crucial for ensuring that the compressor can start effectively and overcome the initial resistance, thereby reducing the chances of startup failure and potential damage to the compressor.

While reducing electrical consumption, enhancing motor efficiency, and protecting the compressor from overheating are important considerations in the operation and efficiency of an air conditioning system, they are not the primary function of a hard start kit. Instead, the focus is primarily on addressing the immediate need for increased starting torque, which helps ensure that the compressor starts smoothly and reliably.