Plenum Fans
Plenum fans deliver high-volume airflow in housing-free configurations that fit where traditional scroll fans cannot. JEPCO represents Cincinnati Fan’s Model FA, a direct-drive centrifugal plenum fan engineered specifically for fan array builds, AHU integration, and data center cooling, and more.
- CFM: up to 25,000 CFM
- Drive Type: Direct drive
- Airflow Direction: Standard flow
- Motor Options: EC, Traditional AC
- Pressure: 12” WG
Plenum fans deliver high-volume airflow in housing-free configurations that fit where traditional scroll fans cannot. JEPCO represents Cincinnati Fan’s Model FA, a direct-drive centrifugal plenum fan engineered specifically for fan array builds, AHU integration, and data center cooling, with performance up to 25,000 CFM per unit and static pressures up to 12″ w.g.
Key Highlights:
- Hollow extruded aluminum airfoil blades reduce weight and improve aerodynamic efficiency
- Platform accepts EC or AC motors, covering variable-speed and fixed-speed designs
- Multiple wheel diameters and partial widths allow precise sizing for array configurations
- CINCINNATI FAN
| Model | Type | Material | Airflow | Static Pressure |
|---|---|---|---|---|
| Model FA Fan | Direct Drive Plenum Fan | Aluminum | Up to 25,000 CFM | Up to 12” WG |
How Plenum Fan Arrays Solve the Single-Fan Reliability Problem
A single large fan creates a single point of failure. Fan arrays built with plenum fans distribute load across multiple units, so the system keeps running if one fan goes offline. Cincinnati Fan’s Model FA is purpose-built for this configuration, with an airfoil wheel that maintains airflow consistency across variable operating conditions and an EC motor option with built-in VFD for integrated speed control without external components.
- Integrated EC motor speed control adjusts fan output to system demand automatically
- Airfoil wheel delivers uniform airflow and stable aerodynamic performance at partial loads
- Standard NEMA frame mounting simplifies motor maintenance and replacement in the field
Why Engineers Specify Cincinnati Fan Plenum Fans Through JEPCO
Cincinnati Fan designs the Model FA for fan array performance from the ground up, not as an adaptation of a general-purpose fan. JEPCO has represented Cincinnati Fan across California and Southern and Western Nevada for over 55 years, providing application selection support and direct factory access that shortens the path from spec to delivery.
- Fan array platform accepts EC or AC motors without housing design changes
- Aluminum wheel construction provides corrosion resistance and long-term durability in continuous-duty service
- JEPCO application engineers match wheel size and partial width to your specs
Frequently Asked Questions About Plenum Fans
What is the difference between a plenum fan and a housed centrifugal fan?
A plenum fan has no scroll housing and discharges air directly into a plenum chamber, making it more compact and easier to array than a housed fan.
Can Cincinnati Fan Model FA plenum fans be used for AHU retrofits?
Yes, the Model FA is suitable for replacing legacy housed fans in existing air handling units and is available in multiple wheel sizes to fit within existing cabinet dimensions.
What motor options are available for the Model FA?
The Model FA platform accepts both EC motors with built-in VFD capability and standard AC motors with NEMA frame mounting on the same housing design.
How many Model FA fans are needed for a given airflow requirement?
Array configuration depends on your total CFM, static pressure, and cabinet geometry; send us your system specs and JEPCO will size the array for your application.
Find the Right Plenum Fan Configuration for Your System
Fan array sizing depends on more than peak CFM. Wheel selection, motor type, partial width, and array geometry all affect how the system performs at part load. Send us your airflow requirements and system dimensions and JEPCO’s application team will identify the right Model FA configuration for your project.