What is ASHRAE 62.1 and what does it require for ventilation?

• A. Minimum outdoor air rates and IAQ control requirements.
• B. Maximum occupancy.
• C. No standards for ventilation.
• D. Only for residential.

Answer: (A)

ASHRAE 62.1 is the standard that dictates how much outdoor air must be brought into a building and what indoor air quality (IAQ) controls are required to keep the environment acceptable for occupants. It sets minimum outdoor air rates based on space type and occupancy and requires controls such as proper filtration and other measures to manage contaminants. It’s not about maximum occupancy, and it isn’t limited to residential spaces—the residential side is covered by a separate standard.