Ian O’Connor, CEM, is an energy engineer at Wood Plc, where he has been working since graduating from the University of Florida in 2014. He has performed 3.3 million square feet of ASHRAE level I energy audits and has developed lighting and HVAC energy conservation projects for numerous clients. Contact him at ian.oconnor@woodplc.com.
Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum systems.
