Many designers want to comply with both Standard 62.1 and Standard 90.1. Requirements from both standards have been inco rporatedinto many building codes, and the minimum requirements of both standards must be met as prerequisites to LEED c ertification. In attempting to comply with the ventilation requirements of Standard 62.1 AND the energy-limiting require ments of Standard 90.1, s ome desi gners have concluded that it’s next to impossible to do so using traditional VAV systems. While in some specific cases th ese design ers might be right, in most cases they are not right. This program discusses the potentially conflicting requirements and design ch oices.