In the first update since placing its indoor air quality standard on continuous maintenance, the American Society of Heating, Refrigerating & Air-Conditioning Engineers (ASHRAE, Atlanta) has published ASHRAE Standard 62-1999, Ventilation for Acceptable Indoor Air Quality.
The new standard contains the entire 1989 version, which remains unchanged, along with four new addenda. It also ensures that purchasers receive future updates through ASHRAE's continuous maintenance procedures. Those purchasing the new standard will receive all new-published addenda free for one year, after which they may order from a subscription service offered by ASHRAE.