Description
The Tornado DC 18″ Fan is a large-format, DC-motor freestanding room fan designed to move high volumes of air across large indoor growing spaces with the energy efficiency and quiet operation that DC motor technology provides. At 18 inches, this fan delivers serious airflow — appropriate for commercial-scale grow rooms, large polytunnel environments, and multi-tent setups where a single powerful room fan supplements the clip fans and inline extraction system to maintain thorough air circulation throughout the growing area.
Why DC Motor Technology Makes the Difference
Traditional room fans use AC (alternating current) induction motors. These motors are inherently inefficient, converting a relatively small proportion of their electrical input into useful airflow. They also run at fixed speeds determined by the motor’s pole configuration and mains frequency, giving you limited speed control options. DC (direct current) motors fundamentally change this. By converting mains AC to DC and driving the motor electronically, DC fans achieve significantly higher energy efficiency — often 50% or more compared to equivalent AC motor fans. Electronic motor control also enables genuinely variable speed adjustment across a wide range, giving growers precise control over airflow from the lowest gentle setting to maximum output. The Tornado DC 18″ fan brings these advantages to room-scale air circulation. At The Horticulture Company we have seen DC fan technology transform the economics of running large growing spaces, where multiple fans running continuously can represent a significant proportion of total energy costs.
Performance, Noise Levels, and Practical Specifications
The 18-inch blade diameter of the Tornado DC moves a substantial volume of air per rotation — far more than smaller clip or desk fans. The DC motor runs more quietly than AC equivalents at comparable airflow, an important consideration in growing environments where fan noise can affect both the operator’s environment and the ambient noise signature of the growing operation. Multiple speed settings allow the fan to be matched precisely to the air circulation requirements of different growth stages and seasonal temperature variations. The freestanding design with height-adjustable column allows the fan head to be positioned at the canopy level most appropriate for your crop height.









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