Air Curtin is a fan device designed to create an invisible air barrier over the doorways that can separate the two environments efficiently without limiting access to the number of people and people. It is designed such that its energy-saving screen reduces the heating and cooling costs, which may be higher when not used, and protects the internal climate that enhances high comfort among people. Its uses keep the atmosphere clean and prevent the pests and insects from the environment, dust, pollution, smells, odors, airborne, and prevents draughts and cold or hot air entrance. It functions based on the high-velocity jet of air that covers all the available openings. The usage of Air Curtin creates comfort by the jet air on people as they pass the air screen and can be used to maintain entrance temperature. Therefore, air curtains are manufactured and designed following high quality and reliability that makes them obtain high performance and saves the energy combined with an innovative design. Further, they are designed to provide basic and advanced regulation to fulfill all the customer’s requirements and be connected with BMS systems, Windows, and Smartphone by using WI-FI.