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Industrial Fan Silencers

A wide variety of fans and blowers are used in today’s industrial facilities in a variety of applications. They may be stand alone or included as components in OEM equipment such as dust collectors and air handling units. Rotating mechanical equipment such as fans are a common noise source in manufacturing plants.

How does SysTech address these issues?  This is what we do…

The noise generated by fans can quickly become a significant problem, requiring the use of silencers and wraps. SysTech will work with you to address your specific fan/silencer needs and facility requirements including issues such as:

  • Space restrictions
  • Maintaining air flow by minimizing pressure loss through the silencer
  • Meeting environmental noise regulations and industrial health and safety requirements
  • Using construction materials specific to the application
  • Providing accessories including rain hoods, transitions, support brackets and flow measuring devices

Fan Inlet and Outlet Silencers


Our inlet and outlet silencers are designed to meet your exact noise attenuation requirement, with industrial silencer casings fabricated from heavy gauge steel or with lighter gages available for commercial duty silencers. Each silencer is designed and built for a specific pressure loss and airflow velocity.  Special construction, materials and paints are used when high temperature or corrosive gases are present in the airstream.  Options include rain hoods, 90 degree flow path, screens and renewable packing designs.

Sound Blankets


When fan or blower housing noise exceeds permitted levels, consider a fan blanket or insulated housing wrap for reducing breakout noise.  Noise attenuation, depending upon the fan noise spectrum, is up to 10 dBA @ 3 feet.  Blankets are sewn in sections and assembled with Velcro fasteners to totally encompass the fan/blower casing.  Typically they are 2 inch thick with a PVC vinyl sound barrier and fiberglass mat insulation.  Wrapping the fan housing only, in lieu of enclosing the complete fan assembly, negates the need to ventilate the motor and minimizes floor space requirements.

Systech can help you solve noise problems including:

  • Pulsing noise
  • Low rumble
  • High pitched squeal

Where is the existing or potential noise source?

  • Fan inlet going back through the duct or hood
  • Fan outlet going into the surrounding environment
  • At drive shaft entry into fan housing
  • Drive motor
  • Fan housing
  • Bearing noise
  • Belt noise
  • Vibration of fan assembly
  • Duct vibration

SysTech offers a variety of fan silencing solutions and noise reduction methods to meet every application.

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