In hospitals; Depending on the risk of infection, the ambient air must be sterile at different levels. Indoor air quality in hospitals is an important factor affecting the health of patients, visitors and staff.
Some factors to consider to ensure indoor air quality in hospitals:


Ventilation System: Hospitals must have an adequate and effective ventilation system. Air circulation should be ensured and fresh air should be introduced regularly.
Filtering: High quality filters should be used in ventilation systems. These filters remove airborne particles, dust, allergens and microorganisms, thus improving indoor air quality.
Humidity control: The ideal humidity level should be maintained. High humidity can cause mold and bacteria growth, while low humidity can lead to respiratory problems.
Control of Chemicals: In hospitals, the use of cleaning materials, disinfectants, medicines and other chemicals is common. It is important that these substances are not released into the air and do not accumulate indoors. The spread of harmful chemicals should be prevented by taking correct storage and ventilation precautions.


Ensuring indoor air quality in hospitals is extremely important to protect the health of patients, visitors and staff. Creating a healthy indoor environment by considering elements such as filtration, ventilation systems and humidity control plays a vital role in healthcare facilities.

Clean Room Standard in Hospitals

In the classification of rooms that must be clean for health reasons, particles with a diameter of 0.4 (µm) are taken as criteria and the number of particles in the unit volume (m3 or ft3) determines the quality of the clean room. There are standards issued by various countries regarding clean rooms. Determining the air exchange rates in many areas such as operating rooms and intensive care units, which are described in relevant standards, especially the DIN 1946/4 standard, and choosing the appropriate filter system is very important for patients and healthcare professionals.

According to DIN 1964/4 norm, these rooms in hospitals are divided into two classes:


First class rooms: They are defined as microorganism-free rooms that require high hygienic conditions. These; operating rooms, all areas leading to operating rooms (corridors, sterile material storage, etc.), pre- and post-operative preparation rooms, central sterilization, sterile material storage, intensive care rooms, newborn baby rooms, surgical department, surgical hand washing section, areas with risk of infection. patient rooms, patient preparation rooms, patient recovery rooms, anesthesia device rooms, medical device rooms, etc. neighborhoods. Operating rooms are also divided into classes A and B; Class A operating rooms require a very high hygienic environment. Class B operating rooms are environments that do not require low turbulent flow.

Second class rooms: These are rooms free of microorganisms that require normal conditions. Among these; emergency patient rooms, waiting rooms, cesarean section rooms, patient rooms, clinics, radiology, x-ray, laboratories (blood bank, biochemistry, gastrointestinal, neurochemistry, thyroid-endocrine, hematology, special coagulation, clinical immunology, microbiology), pharmacy, patient recovery We can list the observation room, endoscopy, morgue and autopsy rooms.



Filters used in air conditioning installations of hospitals; We can divide them into 3 groups: pre-filters, precision filters and absolute [or HEPA (High Efficiency Particulate Air Filter)] filters. Additionally, activated carbon filters can be used as the 4th stage to remove unwanted gases and odors.


Clean air in hospitals is vital to reduce the risk of infection and support the recovery process of patients. Air filters also help protect medical devices and equipment used in the healthcare industry. NAF Filter, which will meet the clean air needs and all requirements in hospitals, offers the most appropriate solutions.