In HVAC installations, the largest share of energy consumption can be attributed to equipment such as chillers and boilers. However, fans also have a significant energy footprint, especially those in air handlers and cooling towers. In the case of hydronic HVAC systems, pumps also demand plenty of electric power
The efficiency of fans and pumps can be improved in two steps: first, equip them with high-efficiency motors of adequate capacity. Then speed controls can be added for further efficiency gains.