Global Air - EC2 Fan Speed Controller with Balancer

The Global Air EC2 Fan Speed Controller with Balancer is a compact environmental controller designed to precisely manage airflow in indoor growing environments. Built for use with EC extractor fans, it allows growers to automatically regulate fan speeds based on temperature while balancing intake and outtake airflow. This helps maintain a stable climate inside a grow tent or grow room, which is essential for healthy plant development, efficient nutrient uptake, and consistent yields in hydroponics, coco, or soil setups.

Unlike basic fan controllers, the EC2 includes a built-in fan balancer that allows growers to fine-tune the speed difference between intake and extraction fans. This ensures stable negative pressure within the grow space, preventing tents from ballooning while maintaining strong and controlled airflow. The controller is powered directly through the fan connection, meaning no additional power supply is required.

Key Benefits

• Thermostatic control of EC extractor and intake fans
• Built-in fan balancer for precise airflow management
• Maintains stable negative pressure in grow tents and grow rooms
• Adjustable minimum and maximum fan speeds for the extraction fan
• Intake fan automatically follows the outtake fan speed
• Powered directly by the connected EC fan — no external power supply required
• Compatible with Systemair EC fan ranges and selected EC systems

How It Solves Grow Problems

Inconsistent airflow can quickly cause problems in indoor growing environments. If extraction is too strong, grow tents can collapse; if intake airflow is too weak, temperatures rise and humidity builds up, slowing vegetative growth and reducing plant health.

The EC2 Fan Speed Controller solves this by automatically adjusting fan speeds to maintain stable environmental conditions. By balancing intake and extraction airflow, it keeps negative pressure consistent while ensuring fresh air is continuously supplied to plants. This stable airflow supports better temperature control, improves transpiration, and helps maintain ideal humidity levels during the flowering and bloom stage. The result is healthier plants, improved bud density, and stronger yields in hydroponic systems and indoor growing setups.

How to Use

1. Connect the EC2 controller to your EC extractor fan using the included active male-to-male control cable.

2. If running both intake and outtake fans, connect the second fan using an additional compatible active EC cable.

3. Mount the temperature probe inside your grow tent or grow room at canopy height.

4. Set the minimum and maximum fan speeds for the extraction fan using the controller.

5. Adjust the fan balance control to fine-tune the speed difference between intake and outtake fans and maintain negative pressure.

6. The controller will automatically regulate fan speeds based on temperature to maintain a stable indoor growing environment.