Modular Plenum Fans

Chicago’s Plenum Fan delivers a practical and economical solution for air handling and conditioning systems. Featuring an unhoused, true airfoil-bladed wheel, the fan is designed for direct installation within the plenum, eliminating the need for downstream duct transitions and reducing system complexity.
The fan can be installed in either horizontal or vertical orientations to accommodate space constraints and design flexibility. For higher airflow requirements, multiple units can be configured in fan array systems, arranged side-by-side or stacked vertically. This modular approach enhances redundancy, improves efficiency, and simplifies maintenance while optimizing available mechanical room space.

Literature

Product Bulletin: APF

Operation & Maintenance Manual: Industrial Centrifugal Fans

Plenum Fan Applications

Chicago’s Plenum Fan provides a practical, economical solution for air handling systems. Its unhoused, true airfoil wheel installs directly within the plenum, eliminating the need for a conventional scroll and reducing system footprint. Ideal for retrofit applications where space is limited, the fan can be mounted horizontally or vertically and configured in fan arrays, side-by-side or stacked vertically, for scalable capacity and built-in redundancy. Designed for supply, return, or exhaust service, Chicago Airfoil Plenum Fans deliver dependable performance and long-term durability.Chicago’s Plenum Fan provides a practical, economical solution for air handling systems. Its unhoused, true airfoil wheel installs directly within the plenum, eliminating the need for a conventional scroll and reducing system footprint. Ideal for retrofit applications where space is limited, the fan can be mounted horizontally or vertically and configured in fan arrays, side-by-side or stacked vertically, for scalable capacity and built-in redundancy. Designed for supply, return, or exhaust service, Chicago Airfoil Plenum Fans deliver dependable performance and long-term durability.

Fan Options

Inlet screen
Inlet volume control
Wheel guard
Isolators
Lifting Lugs
Height Saving Brackets
Modular Boxed Housing with or without insulation
Vertical Mounting Bracket/Flange
Piezometer Ring and Panel Pressure Taps
G2.5 balance

Features

High efficiency hollow bladed airfoil wheel
Unhoused wheel installs within the plenum to eliminate downstream discharge
Stable air flow over entire performance range
Horizontal, vertical and array installation
Rugged industrial strength frame
Integral lifting hooks
AMCA certified performance for air and sound and FEI
Fans assembled, tested and shipped as a full array (optional)
Arrays provide redundancy as well as performance and maintenance flexibility
3-year Warranty

Performance

Sizes: 122 to 660
Volumes to 195,000 CFM
Pressures to 18” wg
Temperatures to 200°F

Alternate Fan Designs