Regal Rexnord
Centrifugal Fans
Regal Rexnord centrifugal fans are high - efficiency, belt - driven or direct - drive air - moving machines that combine the pressure - development capability of centrifugal impellers with the aerodynamic refinement demanded in HVAC air - handling, industrial process ventilation, and clean - air applications.Unlike centrifugal blowers(which emphasize pressure over flow), centrifugal fans are selected for applications where both significant airflow and moderate pressure are required — commercial and industrial air handlers, dust - collection systems, fume exhaust, and forced - draft combustion air.Under the Fasco and Marathon brands, our centrifugal fan line includes forward - curved(squirrel - cage) wheels for quiet, low - speed air handling; backward - inclined wheels for non - overloading horsepower characteristics and high efficiency; and airfoil - profile wheels for the maximum efficiency achievable in centrifugal air movement.Building - services engineers, air - handling unit manufacturers, and industrial process engineers specify Regal Rexnord centrifugal fans for the combination of efficiency, low - noise characteristics, and the structural durability that ensures decades of reliable operation in rooftop, penthouse, and process installations.
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Backward - Inclined & Airfoil Wheel Efficiency
Non - overloading horsepower characteristic and aerodynamic blade profiles deliver static efficiencies up to 82 %, significantly reducing fan energy consumption in continuous - operation HVAC and process applications.
Forward - Curved Wheels for Quiet Operation
Squirrel - cage impellers operate at lower speeds for a given airflow and pressure, reducing tonal noise for the occupied - space and noise - sensitive installations common in commercial buildings.
Belt - Drive Speed Tuning for System Optimization
Adjustable sheaves enable precise RPM selection to match the fan to the system’s actual resistance, avoiding the energy waste of damper throttling and the performance uncertainty of misapplied direct - drive fans.
Heavy - Gauge Steel Housings & Frames
Continuous - weld construction with structural steel support frames that maintain alignment and prevent the vibration increase that develops in lighter - gauge fan housings over years of operation.
Multiple Discharge & Rotation Configurations
Standard housings available in clockwise and counterclockwise rotation with up to 16 discharge positions, enabling the optimal duct - connection layout for the application’s space constraints.
AMCA - Certified Performance Ratings
Fans tested and rated per AMCA 210 / 300 standards, providing the verified airflow, pressure, and efficiency data that engineers require for system design and energy - code compliance submissions.
Centrifugal Fans for Air Handlers, Dust Collectors & Fume Exhaust
Commercial and industrial air - handling units depend on centrifugal fans to move conditioned air through filters, coils, and extensive ductwork.Regal Rexnord backward - inclined centrifugal fans provide the efficiency and non - overloading horsepower characteristic that ensure the fan motor cannot overload even if system resistance varies — a critical safety and reliability feature.In industrial dust - collection systems, our heavy - duty centrifugal fans handle the moderate dust loading of woodworking, metal - grinding, and grain - handling operations, with self - cleaning radial - wheel designs available for the most severe dust and particulate - laden airstreams.Chemical laboratory and industrial fume - exhaust systems employ our spark - resistant construction options(AMCA Type A, B, or C) that prevent the ignition of flammable vapors or dusts in the airstream.For each application, Regal Rexnord provides the wheel type, housing material, and shaft / bearing configuration matched to the airstream characteristics and installation environment.
Fan Efficiency & Compliance with Energy Codes
Recent updates to ASHRAE 90.1 and the International Energy Conservation Code have imposed minimum fan - efficiency requirements for many commercial and industrial fan applications.Regal Rexnord centrifugal fans with backward - inclined and airfoil wheels meet or exceed these efficiency grades(FEG), ensuring that HVAC systems incorporating our fans comply with energy codes and qualify for LEED and other green - building certification credits.Beyond code compliance, the lifecycle energy cost of a fan operating 6,000 to 8,000 hours per year often exceeds the fan purchase cost many times over, making the selection of a high - efficiency fan one of the most cost - effective energy - conservation measures available.Our application engineers can evaluate the system operating point and annual hours to quantify the energy savings and payback period for selecting a high - efficiency fan versus a standard - efficiency model.