Hard start kits aren’t always necessary, but they are extremely beneficial if your AC unit is split into an indoor and outdoor component. If the condensing coil (on the inside) is 50 or more feet away from the condensing unit (outside), the compressor will greatly benefit from the assistance of a hard start kit when turning on. When an AC starts up and begins pumping and circulating the refrigerant, it takes a lot of energy. Without the help of a hard start kit, this process makes the machine overall far less efficient and also shortens its lifespan considerably. A hard start kit gives the AC extra support in the starting up and pumping process, which eases the strain on the compressor.