An air-side economizer is an HVAC control system that can provide significant cooling energy savings when properly specified, installed, commissioned, and maintained. Unfortunately, the economizer’s col¬lection of dampers, actuators, linkages, sensors, and controllers rarely achieves its savings potential. Failures are a result of maintenance deficiencies, improper con¬trol, or systemic problems. A healthy economizer begins life with a good design concept, careful specification of its constituent components, and performance testing of its operation under a variety of conditions. As time passes, it is important to retest the system periodically.


Real World Operation of Air Economizers