EC Duct Fans

About

EC fans use brushless motors with electronically commutated control, which means genuinely variable speed rather than the two or three steps an AC fan gives you. They cost more up front and are quieter, more efficient and more controllable in every way that matters. EC against AC AC EC Speed control Stepped, or a separate controller Fully variable, 0-100% Efficiency at part load Poor - draws near full power Excellent - power falls with speed Noise turned down Often hums or buzzes Genuinely quiet Automation Needs an add-on Responds to a controller directly Cost Lower Higher up front Where the saving actually comes from An AC fan on a dimmer still draws close to full power when turned down – you lose the noise but not the bill. An EC fan at 50% speed draws roughly a quarter of the power, because fan power falls with the cube of speed. A room running 12-18 hours a day makes that difference back over a year. The real reason to buy one Automation. An EC fan wired to a controller runs at the speed the room needs – slow and silent overnight, ramping up when the lights and the heat come on. That holds temperature far more steadily than a fan running flat out constantly, and it is much quieter for the eleven hours a day when nobody needs it at full tilt. See fan speed controllers and grow room monitoring . Related See all extraction fans , Global Air Supplies fans , carbon filters and ducting . Why buy EC fans from The Hydro Bros? We are a hydroponics shop in Croydon and we will tell you honestly whether EC pays back for your setup or whether an AC fan is fine. Discreet UK and European delivery, and excellent customer reviews on Trustpilot .