They are the devices that help reduce the core temperature of the product in the cold room, without spoiling the product and losing its freshness in a short time. This process is called shock cooling. Compressors used in shock cooling devices are used with semi-hermetic and screw compressors. The most important issue to be considered in shock units is the redirectors. The evaporator must not blow the air directly onto the product, but on the redirector used. This process helps to maintain the freshness of the product. In shock cooling units, suspended and floor mounted type evaporator options are available.