Heating exchanger evaporator. The purpose of this structural element is to cool the air with a refrigerant in the form of a freon. Small fan is intended to improve air circulation. Before entering the evaporator, the refrigerant to lower the pressure enters the thermoregulating screw. This screw is a design of a copper tube, which is a retinue to a spiral. All elements in which Freon circulates are interconnected by copper pipelines, which are the main media of the refrigerant. To protect the air conditioner from dust and dirt, a coarse cleaning filter is used, which looks like a small metal grid. This filter is subject to periodic flushing to remove dirt. Often in air conditioners, carbon filters are installed for cleaning, which contain activated charcoal, to remove the smallest dust and possible smells. These filters must be replaced, through the period specified in the passport of the system or if necessary, if the performance decreases.