eCAPS
Greenheck Introduces Fan Energy Index (FEI) Resource Page
October, 2025
The Fan Energy Index (FEI) is a comprehensive energy metric for identifying fan systems that operate more efficiently, quietly, and reliably. FEI can be used as an engineering tool to identify and select the best fan system for the application while quickly highlighting inferior fans during submittal review.
Greenheck’s Fan Energy Index (FEI) educational resource page explains the FEI metric, provides guidance on using FEI in fan selections, and includes codes and compliance information, FAQs, and helpful links to additional resources. Advantages of using FEI in fan system selection include lower energy consumption, operating costs, and carbon emissions; a more forgiving selection point, and quieter operation. Get the facts on FEI at www.greenheck.com/fei
Greenheck is a global leader in engineering and manufacturing air movement, control, and conditioning equipment. For more than 75 years, we have been committed to promoting the highest levels of indoor air quality by offering the widest range of ventilation products for commercial and institutional buildings. Through superior customer service, we continue our legacy of innovation as experts in air movement by connecting our mechanical representative partners and customers with the newest products. With our CAPS® product selection tool and HVAC University education series, Greenheck offers technology and product knowledge to ensure that when you work with us, you are working with the easiest company to do business with.
To learn more, visit www.greenheck.com or contact Greenheck, P.O. Box 410, Schofield, WI 54476-0410, (715) 359-6171, FAX (715) 355-2399.