The Carrier KSAHS2801AAA Hard Start Kit is a starting-assistance component designed to provide additional starting torque to HVAC compressors. It works by temporarily supplying extra electrical power during compressor startup, helping the motor overcome high starting loads and reach normal operating speed more efficiently. The kit is commonly used with compatible Carrier air condition... https://www.partshnc.com/ksahs2801aaa-carrier-hard-start-kit