How is occupant comfort addressed in ASHRAE 62.1?

• A. It is directly controlled by setting precise comfort temperature limits in every space.
• B. Indirectly through IAQ; temperature and humidity preferences are addressed more in ASHRAE 55, but IAQ influences comfort.
• C. It is not a consideration of ASHRAE 62.1.
• D. Comfort is determined solely by outdoor air quality.

Answer: (B)

ASHRAE 62.1 addresses occupant comfort indirectly by focusing on indoor air quality through ventilation, filtration, and source control. By ensuring adequate outdoor air and controlling contaminants, the space feels fresher and less stuffy, reducing odors and irritants that can make people uncomfortable. It does not mandate precise comfort temperature or humidity targets in every space; those are covered by ASHRAE 55, which deals with thermal comfort. So comfort in 62.1 comes from IAQ, while temperature and humidity preferences are addressed more directly in 55.