CLEAN AIR SYSTEM IN THE ROOMS There is a HEPA ceiling type filtration system that was first applied in patient rooms in our country using HEPA-Fan modules and CFD airflow modeling techniques. The hybrid flow type has been applied to provide the highest level of protection against airborne infections. With this type of flow, laminar air flow through the patient is provided, and turbulent flow in other parts of the room. However, the laminar airflow given through the patient bed and the velocity profile formed along the immediate vicinity of the bed are distributed in a manner that does not disturb the patient. The pressures are adjusted to direct air from the patient room to the outside corridors. ADVANTAGES OF THIS SYSTEM The pressure of each chamber can be adjusted to the desired level. In this way, there are no pressure problems in central single-channel systems. Due to the independent air system, the existing infectious agents in the room will not interfere with the system and negatively affect other rooms. Non-hospital rooms will operate in economy mode and significant energy savings will be achieved. The number of air cycles per hour in each room can be set between ACH 10-18. High filtration efficiency (0.3 µm, 99.97%) was provided by the HEPA filter system. With zero leakage and negative plenium technology, the risks of infection caused by ventilation in the room are completely eliminated. No contaminated air enters the patient room, especially from the suspended ceiling or the surrounding environment. The sterilization process is performed continuously with UV rays on the air ducts and the surfaces of the cooling / heating coils.