Negative pressure push-pull exhaust fan

The term "negative pressure" refers to the condition where the pressure inside the space is lower than the pressure outside. In the context of ventilation, negative pressure is created by the exhaust fan pulling air out of the space, which results in air being drawn in from outside through any available openings, such as windows, doors, or vents.

The "push-pull" configuration indicates that the fan simultaneously pushes air out of the space while pulling fresh air in. This setup helps maintain airflow and circulation, preventing stagnation and ensuring proper ventilation.

These exhaust fans are commonly used in environments where removing airborne contaminants, odors, or excess heat is necessary for safety and comfort. They can be found in industrial facilities, laboratories, commercial kitchens, automotive repair shops, and other similar settings. The design and installation of these systems need to consider factors such as the size of the space, the volume of air to be ventilated, and any applicable safety regulations.