As seasons change, erratic weather leads to condensation, which can pose safety risks, affect product integrity and even cause plant shutdowns. Dewtect by Big Ass Fans prevents condensation in unconditioned spaces by automating your Big Ass Fans and other mechanical equipment. No matter the space—distribution centers, warehouses, manufacturing plants or metal facilities—Dewtect protects your most valuable assets: people, product and property.



  • Monitors current and trending environmental conditions 24/7 to proactively mitigate condensation before it occurs
  • Locally records all measured environmental variables and modes of operation for ongoing commissioning using historical trends
  • Integrates with any building automation system using BACNet/IP or BACNet/MSTP
  • Large color touchscreen provides real-time XY graph of conditions, access to modes of operation, equipment parameters, troubleshooting, manual control and much more

Predictive Automation

  • Uses sensors and proprietary algorithms to automate Big Ass Fans, ventilation equipment and heaters to reduce the risk of condensation
  • Optimizes Big Ass Fans for thermal comfort during summer and winter months when there is no risk of condensation
  • Automatically modulates fan functions without the need to physically measure surface temperatures, allowing users to maximize floor space (model specific)

Hands-free Control

  • Self-commissioning mode, modeled after thousands of actual data points, provides site-specific performance (model specific)
  • Eliminates human-error and neutralizes unpredictable weather patterns with hands-free automation

Environmental Conditions Monitored

  • Indoor and outdoor ambient air temperature
  • Indoor and outdoor relative humidity
  • Indoor and outdoor dew point
  • Surface temperature of troubled area, product, or equipment

Big Ass Advisory Service

  • System inspections by a team of highly-specialized applications engineers
  • Fine tuning of parameters for optimal performance
  • Calibration or replacement of sensors
  • Software updates
  • Comprehensive reports showing system performance and recommendations for improvements


Tech Specs

Install Guides


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Control that condensation and protect your business assets with Dewtect. Call us at 844-924-4277, or request a call back below to speak with a Big Ass Fan Expert and learn more about what Dewtect can do for you.


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