Rosenberg Fans

Industry-leading manufacturer of high-quality industrial fans and blowers.

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Rosenberg Fans

Industry-leading manufacturer of high-quality industrial fans and blowers.

Email Us

EC Fan Grid

High Tech Fan Grid

A highly efficient and energy-saving multiple fan array for HVAC Retrofit and New Air Handling Unit (AHU) applications.
Equipped with easy-to-control EC Motor technology (ECM), Rosenberg’s ECFanGrid improves reliability, flexibility, and simplicity in existing or new ventilation systems.

Click here to watch Rosenberg’s YouTube video on the ECFanGrid

EC Technology


  • High-efficiency factor
  • Low energy consumption
  • Integrated monitoring function
  • Easy installation and connection
  • Expanded functionality
  • Compact construction
  • Blower/system redundancy
  • Creates space for filtration/humidification
  • Engineered to match existing air handler airflow requirements


Energy Efficiency

EC-technology achieves efficiency ratings of over 90% and saves up to 50% energy versus traditional motor technology.

Air Curtains

Invisible High-Velocity Air Barrier

An air curtain is a fan-powered device that creates an invisible high-velocity air barrier over a doorway or entrance. This air barrier efficiently separates two different environments without limiting the access of people or vehicles.

An air curtain can help to reduce heating and cooling costs by up to 80% while protecting the indoor environment, and increasing personal comfort.


Quality pays for itself. The slightly higher investment costs compared to conventional motors is usually amortized within a short operating time due to lower energy consumption and greater ease of installation.


Fully Assembled Blower Module

An assembly consisting of a backward curved impeller EC fan mounted inside a sturdy box. It is Rosenberg’s approach to the modular construction of a grid as a stand-alone unit, or in a case when a previous casing no longer exists. Constructed out of an extruded aluminum frame with thermally and sound insulated galvanized steel panels. Powered by energy-efficient and easy to control EC motors (ECM). They can be stacked in a grid of any configuration. Simple and clean. Plug and Play.

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