The “E” is for ENERGY EFFICIENT. Rosenberg’s new E-Series impeller design produces significant increases in energy efficiency and major reductions in operating noise levels. It features AIRFOIL design blades for high-flow and low to medium pressure applications like computer room air conditioning and air handling (CRAC/CRAH), energy recovery ventilation (ERV), energy recovery units (ERUs), box- and roof-fans.

E-Series impellers have the same external dimensions as existing impellers and a similar airflow/pressure mix, but system energy efficiency is increased by 4% while the noise level is lowered by 3 to 5 dB(A) depending on system airflow and static pressure.

E-Series fans are available with EC (electronically commutated) and AC external rotor motors and meet ErP 2015 energy efficiency requirements with all available motor combinations.

AC external rotor motors are 100 percent speed controllable. Thermal contacts provide standard motor protection. All are CE, UL and RoHS approved. Different input voltages are available.

Rosenberg’s extended-life, low-temperature brushless DC motors are controlled by maintenance-free electronic circuitry. Because of reduced mechanical content, EC fan motors run cooler and quieter.

In addition to standard products, Rosenberg’s engineering and manufacturing specialists also offer application assistance and work directly with customers to provide customized air movement solutions.

About Rosenberg

The Rosenberg family of companies is headquartered in Künzelsau, Germany and employs more than 1,400 individuals worldwide. Rosenberg fans and blowers can be found in HVAC systems, as well as industrial and portable air conditioning; in air cooling for variable frequency drives (VFD), wind power generators and power converters, solar inverters, uninterruptable power supplies (UPS), transformers, heat sinks, fan coils, telecom racks and other industrial equipment; in air handling units and fan filter units (FFU); and in railway, marine, military and avionics equipment.

Rosenberg USA is located just outside Charlotte in Indian Trail, N.C. For more information, or to place an order, contact Rosenberg USA by phone at (704) 893-0883; fax (704) 882-0755 or e-mail