Indoor Air sciences CSMI Practice Exam

What is the purpose of a negative air machine?

1. To increase moisture levels

2. To filter dust from the air

3. To create air pressure differentials

4. To eliminate VOCs

The correct answer is: To create air pressure differentials

A negative air machine is specifically designed to create air pressure differentials, which is essential in various settings such as construction sites or during mold remediation. By exhausting air from a contained area, the machine creates a negative pressure environment, which helps to contain contaminants and prevent them from escaping into adjacent areas. This controlled airflow ensures that airborne particles, including dust and other pollutants, are effectively managed, enhancing overall indoor air quality. This functionality is crucial during remediation processes, where the goal is to keep the contaminated air from spreading and to protect other areas of a building or space. The operation of a negative air machine may also facilitate better filtration of airborne particles, but its primary role is in managing air pressure and confinement of pollutants, making it an important tool in maintaining safe and clean environments during specific tasks.