Economizers have been applied on rooftop units in cooler climates for many years but current energy codes now require their use in nearly every USA climate zone. Many technicians may not have a clear understanding of how economizers operate, are installed, commissioned or how to troubleshoot them.  Energy codes now require accurately setting minimum ventilation air and use of advanced control systems. This online program uses a series of training videos that take the technician step by step from the basic operation of the economizer to how to troubleshoot typical problems and control operation. Knowledge checks provided with each section help the participant assure they understand the critical points in each section. At the completion of this course a technician will be better able to adjust and troubleshoot economizer systems used in most packaged rooftop systems. To receive NATE or FAD credit you must pass each of the online knowledge checks.