Which statement best describes the purpose of filters during start-up?

Which statement best describes the purpose of filters during start-up?

• A. To calibrate sensors
• B. To prevent contaminants from entering the system, maintaining indoor air quality
• C. To increase air changes per hour beyond requirement
• D. To reduce energy by recirculating air

Answer: (B)

The main idea is to protect indoor air quality by blocking contaminants from entering the system when it starts up. During start-up, the system begins moving outdoor air and any dust or construction debris in the space can be drawn into ductwork and equipment. Filters catch these particulates before air is conditioned and distributed, helping prevent contaminants from reaching occupied spaces. This role is not about calibrating sensors, increasing air changes beyond what’s required, or saving energy through more recirculation; those are separate considerations. So the statement that best describes the purpose of filters during start-up is that they prevent contaminants from entering the system, maintaining indoor air quality.

The main idea is to protect indoor air quality by blocking contaminants from entering the system when it starts up. During start-up, the system begins moving outdoor air and any dust or construction debris in the space can be drawn into ductwork and equipment. Filters catch these particulates before air is conditioned and distributed, helping prevent contaminants from reaching occupied spaces. This role is not about calibrating sensors, increasing air changes beyond what’s required, or saving energy through more recirculation; those are separate considerations. So the statement that best describes the purpose of filters during start-up is that they prevent contaminants from entering the system, maintaining indoor air quality.