In addition to the smoke control of jet fan systems, the speed of the smoke evacuation is also prominent. These systems, which aim to contain the smoke generated during the fire in a certain area, are designed to provide the weather conditions that will enable people to survive during their escape and then the fire brigade arriving at the scene to reach the fire point under suitable conditions. The basic logic in the jet fan system is that the jet fans create momentum when necessary and direct the smoke to the exhausted openings (shafts). This system provides great advantages in terms of uniform distribution and exhaust of clean air in the entire closed area. The jet fan system consists of main exhaust fans, exhaust shafts, fresh air fans, jet fans, CO detector system, smoke or heat detector system, smoke dampers, fresh air dampers and main control panels. While still in the planning phase, our customers are supported through CFD analysis (Computational Fluid Dynamics).