ThinkGrow Aero-Fan HE-20 20 in High Velocity Fan | 3,624 CFM, 100-277V, IP55

Aero-Fan HE-20 Keeps Air Moving Across Large Rooms Stagnant air in a canopy leads to hot spots, humid pockets and uneven growth. The HE-20 is built to keep a large room mixing. Its 20-inch, six-blade impeller moves up to 3,624 CFM, according to the current tech sheet. Older listings and the manual quote 3,986 CFM for the same fan. Peak draw is 300W at 3.0A on a 100–277V autosensing supply. Speed is set by a digital signal, so no variable frequency drive is needed. The housing is rated IP55 in the manufacturer documents. It runs from -13 to 140°F with a rated MTBF of 40,000 hours. Sound is rated at 68 dB or less, measured three meters from the fan center. The fan measures about 23.39 × 22.05 × 12.2 in and weighs 23.15 lbs. Mounting and Controlling a 20 Inch High Velocity Fan Attach the included stand to the fan body with the supplied screws. Mark the wall position and secure the stand with three screws suited to the wall. The installer is responsible for choosing hardware rated for the full load. The manual asks for the fan to sit well above head height, with the warning label facing the floor. Groups of fans link over RS485 with ECS-7 cables, and one remote can run up to fifty fans. The FRC-1 Smart Fan Remote or FRC-2 dimmer sets speed by hand. TrolMaster HCS-2, HCS-3 and TCS-1 controllers can also run the fans on a schedule. The tech sheet lists ECS-7 and ECS-9 cable sets in the box, while the manual lists the ECS-9 as sold separately. Keep loose leaves and trim away from the intake side. For higher airflow, the HE-20M Pro model is the step up. The attached tech sheet and manual cover installation, control and safety. Key Features Up to 3,624 CFM: Current tech sheet rating from a 20 in, six-blade impeller. No VFD Needed: Digital speed control built into the fan. Autosensing 100–277V: 300W max draw at 3.0A. Group Control: Link up to 50 fans with a TrolMaster remote and ECS-7 cables. IP55 Housing: Rated for -13 to 140°F operation. Technical Specifications Specification Value Part number HE-20 Fan size 20 in (508 mm), 6 blades Max airflow 3,624 CFM per 2026 tech sheet (3,986 CFM per manual) Max static pressure 110 Pa Rated input power 300W max Rated current 3.0A max Input voltage 100–277V~, 50/60Hz IP rating IP55 Sound level ≤68 dB at 3 m Operating temperature -13–140°F (-25–60°C) MTBF 40,000 hours (68°F) Fan dimensions 23.39 × 22.05 × 12.2 in Package size 22.40 × 22.40 × 13.78 in Weight 23.15 lbs (10.5 kg) Control FRC-1, FRC-2, HCS-2, HCS-3, TCS-1 (RS485) Package contents HE-20 fan with stand, ECS-7 cable set, ECS-9 cable set (per tech sheet)