Axial ceiling fan POWERFOIL® X4

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OverviewPowerfoil X4 is an industrial HVLS fan with a patented airfoil blade profile and a maintenance-free NitroSeal™ gearbox. Designed to move large volumes of air for energy savings and year-round occupant comfort in industrial and commercial facilities, it delivers high torque, consistent airflow, and low acoustic emission.

Key Features

• IP56 rated — resists dust, debris, and high-pressure water jets.
• Feel 10° cooler — patented airfoil design provides smooth, consistent airflow that can make occupants feel up to 10°F cooler.
• Under 55 dBA — gear-driven operation typically measures below 55 dBA.
• Productivity gains — improves worker comfort, retention, and productivity in conditioned spaces.

The Gear-Driven AdvantagePowerfoil X4 uses a NitroSeal™ gearbox pressurized with nitrogen to eliminate oil changes and reduce contamination risk. The gearbox is designed for sustained torque and low maintenance, with a reported failure rate below 1% by the manufacturer.

• Higher torque and airflow across large industrial volumes.
• Industrial-scale power with controlled noise levels.
• Consistent performance in heavy-duty operating conditions.

Patented Airfoil TechnologyThe blade geometry is derived from aircraft wing profiles and optimized to move extreme volumes of air efficiently. Three patented features concentrate airflow into the occupied zone for measurable comfort effects.

• Airfoil — aerodynamic blade profile for large-volume air movement with minimal energy use.
• Airfence® — redirects airflow down into the occupied zone rather than spilling off blade tips.
• Winglet — reduces drag to improve overall efficiency.

Control Options

• Wired Standard Controller — included: smooth variable-speed control via an OLED touchscreen; optional passcode protection to limit access.
• BAFCon Controller — upgrade with integrated SmartSense™ that adjusts fan speed based on temperature preferences. Networkable: connect up to 24 Powerfoil X4 fans and integrate with building management systems (BMS).

Mounting OptionsPowerfoil X4 supports multiple structural configurations to suit facility needs:

• I‑Beam — standard mounting for most industrial buildings.
• Bar Joists — compatible using customer-supplied angle iron and Grade‑8 hardware.
• Z‑Purlins — suitable for metal building roofs; Z-purlin kit sold separately.
• Solid Beam / Glulam — acceptable with prior engineering review.

Serviceability & SafetyDesign features minimize downtime and simplify repair: the motor is offset for serviceability and can be replaced without full fan disassembly (replacement designed around four fasteners). Engineered safety features reduce common failure points found in other designs.

Technical Documentation & GuidesTechnical specification sheets, warranty information, installation guides, and clearance requirements are available from the manufacturer; refer to published technical documents for PDFs and installation resources.

Technical Specifications

• Commercial model: Powerfoil® X4
• Brand: Big Ass Fans
• Available diameters: 12 ft, 14 ft, 16 ft, 18 ft, 20 ft, 24 ft
• Extension tube lengths: 2 ft, 5 ft
• Input power options: 200-240/1, 200-240/3, 400-480/3
• Controller options: Standard (wired OLED) and BAFCon (SmartSense™, networkable)
• Ingress protection: IP56
• Typical sound level: under 55 dBA
• Transmission: NitroSeal™ gearbox (nitrogen-pressurized, maintenance-free)
• Manufacturer reported failure rate: under 1%
• Patented features: airfoil profile, Airfence®, winglet
• Mounting: I-Beam, Bar Joists (with angle iron & Grade‑8 hardware), Z-Purlins (kit sold separately), Solid Beam/Glulam (engineering review required)
• Motor replacement: offset motor for simple replacement (design with four fasteners)
• BAFCon integration: connects up to 24 fans