Static evaporators are known as natural convection coolers and operate without fan. They are designed for areas where minimal dehumidification is required or the circulation air is low or zero. Thanks to the low static evaporator air flow, products weight losses are minimal. Greenhouses, storage of food or flowers parts are common examples of areas of operation for these units. Static evaporator is recommended for cold rooms at a temperature of + 2 ° C and above. Below these temperatures, electrical defrosting system and the drip tray must be used. Static evaporators can be (horizontal airflow) vertical type and horizontal type (vertical airflow).