Big Ass Fans -Powerfoil® X4 Fan


Purpose-built to provide maximum airflow in even the toughest conditions, Powerfoil® X4 raises the bar on comfort, safety, and quality for industrial fans.

Category: air circulating fans | air handling fans | harsh environment fans...

MasterFormat: HVAC Air Distribution | HVAC Fans | Decentralized HVAC Equipment

Big Ass Fans
2348 Innovation Drive
Lexington, KY 40511
Tel: (877) 244-3267

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Powerfoil® X4 Fan

Purpose-built to provide maximum airflow in even the toughest conditions, Powerfoil® X4 raises the bar on comfort, safety, and quality for industrial fans. Featuring a full-fan IP56 rating for use in harsh environments, a redesigned airfoil system, and diameter options ranging from 12 to 30 feet, the best-selling big fan in the world is now even better.

  • Seven diameter options ranging from 12 to 30 feet (3.6 to 9.1 meters)
  • Superior coverage area
  • Patented airfoil system
  • Double safety cable system
  • Airfoil retainers
  • Hub safety clips
  • Grade 8 hardware
  • Fire relay
  • Guy wires
  • Airfoil restraint system
  • Hermetically sealed NitroSeal™ gearbox
  • Durable aluminum spar hub
  • Available BMS integration upgrade


With award-winning design and hand-built construction, Powerfoil X4 is the pinnacle of Big Ass Fans’ two decades of airflow innovation.


Featuring eight airfoils and the largest hub in the industry, Powerfoil X4 delivers superior airflow even when compared to similarly sized fans. Its redesigned airfoils’ aggressive angle of attack, coupled with the all-new patented winglet and airfence allow Powerfoil to deliver smooth, best-in-class airflow over expansive coverage areas.

The Ultimate in HVLS Fan Safety

Powerfoil X4 boasts the most extensive safety features of any industrial fan on the market:

  • Mounting system tensile-tested up to 28,000 force-pounds
  • Aircraft-grade steel safety cables
  • Steel hub and airfoil retainers
  • Grade 8 hardware
  • Fire suppression system integration
  • Diameter options of 12, 14, 16, 18, 20, 24, or 30 feet (3.6, 4.3, 4.9, 5.5, 6.1, 7.3, or 9.1 meters)
  • Stober NitroSeal™ gearbox enclosure resists corrosion and reduces heat buildup for longer life
  • Standard IP56 rating for limited dust ingress and protection from high pressure water jets-perfect for use in tough environments
  • Quiet operation, even at high speeds
  • Functional platform for easy integration with lights, security cameras, occupancy sensor, or other devices
  • Dynamic mounting system allows for installation to a number of different structures: I-beams, bar joists, solid beams, and purlins
    Easy HVLS Fan Installation

    With certified installation offered by our licensed professionals or detailed guidelines for DIY, Big Ass Fans provides the support and services you need to make your fan installation a success.

    Don’t Sweat Installation-Let the Pros Handle It

    We’re proud to provide the only nationwide network of factory-certified installers for industrial and commercial spaces. Our team will coordinate your project from start to finish, and the licensed professionals in our Certified Installer program are committed to ensuring that your Big Ass fans are installed quickly, correctly, and safely. (Industrial ceiling fans must be installed at least four feet below the ceiling and two feet from the nearest obstruction at fan level.)

    Annual Preventive Maintenance

    Big Ass Fans’ Preventive Maintenance program provides a comprehensive range of professional services to ensure your fans’ peak performance year after year. While you focus on running your business, we’ll conduct a 30-point inspection and cleaning of each fan and provide you with detailed service records for your fan’s warranty.


    Need something different than the standard silver and yellow? Choose from our eight premium color options or get a custom color-match for a style that’s unique to your business.

    • Valor Red
    • Powerfoil Yellow
    • Royal Blue
    • Alpine White
    • Vintage Silver
    • Gunmetal Gray
    • Oil-rubbed Bronze
    • Stealth Black
    • Choose your own color
    BMS Integration with BAFCon Upgrade

    Upgrade to a premium BAFCon controller for integrated SmartSense™ technology that automatically adjusts fan speeds based on your preference. With a durable touchscreen, BAFCon allows you to connect up to eight Powerfoil X4 industrial HVLS fans and seamlessly integrate with your existing BMS.

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