According to the SMACNA standards, what is a primary focus for controlling air quality?

The primary focus for controlling air quality, as specified in SMACNA (Sheet Metal and Air Conditioning Contractors' National Association) standards, is on source control of contaminants. This approach emphasizes identifying potential sources of contamination in the built environment and implementing strategies to either eliminate or minimize these sources.

By concentrating on source control, a project can prevent pollutants from entering the indoor environment, which is essential for maintaining good indoor air quality. Measures may include proper ventilation systems, the use of low-emission materials, and maintaining clean construction practices that reduce dust and other particles.

This focus is crucial because, while energy-efficient HVAC systems can improve air circulation and reduce energy costs, they do not inherently address the prevention of contaminants in the air. Similarly, while indoor water usage and waste management are important for overall sustainability, they do not directly impact the control of air quality. Hence, source control of contaminants aligns most appropriately with the goals of SMACNA standards concerning air quality management.