The paper highlights some of the key features of the design procedures in ASHRAE Standard 62 (Ventilation for Acceptable Indoor Air Quality) and summarizes the status of the related review process. The Standard contains design procedures and guidelines for ventilation rates in 'all indoor or enclosed spaces that people may occupy, except where other applicable standards and requirements dictate larger amounts of ventilation than this standard.' It is the basis for ventilation requirements in many codes for commercial, institutional, and residential buildings in North America. The Standard is reviewed every 5 years or less, and updated as needed to incorporate new information or improve its usefulness to building designers and code officials.