The use of air curtains provides advantages in many ways. Air curtains are the most ideal shields, especially to insulate between environments at different temperatures and to prevent unwanted odors such as exhaust, coal smoke, and food odors from entering the interior environment.

• To prevent bad and undesirable odors (exhaust, coal smoke, food cooking, etc.) from entering the indoor environment,
• In order to prevent pests of a certain size from the outside environment from entering the indoor environment and adversely affecting hygiene and comfort,
• In order to increase the ambient comfort by bringing the temperature difference between the hot air above and the cold air below, as much as possible through air circulation, and to save energy by ensuring that the air conditioner used for heating and cooling the indoor environment detects the correct temperature and thus thermostats.