It is the process of changing or replacing air in a space to adjust the temperature, or remove moisture,

odor, smoke, heat, dust, and airborne bacteria.

Ventilation involves replacing air with the outside and circulating it inside the building.

Ventilation is one of the most important factors in maintaining indoor air quality in buildings.

The methods of ventilation of buildings are divided into mechanical ventilation and natural ventilation.

Ventilation is used to remove unpleasant odors and excess moisture, renew the air, and maintain

the movement of air inside buildings to prevent spoilage of indoor air in buildings.