Ventilation systems are one of the most important systems installed in all administrative and residential buildings. The technical characteristics of ventilation systems must meet the norms of international standards.

The reason for the importance of ventilation systems is explained by the fact that as a result of the absence of these systems, an increase in carbon dioxide and other harmful gases is observed in closed spaces. This directly affects people`s health.

Ventilation systems are classified according to the following criteria:
According to the method of air movement: Natural and mechanical (forced);
According to its purpose: Blowing and suction;
Due to the provision of air exchange: General exchange, security, smoke extraction;
According to design and structure: Duct and Ductless.