Duralast makes products that are designed and tested to match the standards of original equipment. They are easy to install and provide trouble-free operation, high performance, and long-lasting durability. The A/C Pressure Switch keeps track of the air conditioning system's pressure, helping to control the compressor, fans, and system levels efficiently. If it doesn't function properly, the system's performance will suffer, and vital components will be left unprotected, leading to excessive wear and damage.