Duct fans are designed to control the environmental conditions in your grow room, helping to keep temperature and humidity levels optimal, while drawing in a fresh supply of CO2 that your plants can use to photosynthesise. We now offer Hyper Fans and Revolution Vector EC systems that feature super-efficient digital motors, delivering a greater level of airflow for every watt of electricity consumed. If you're on a tighter budget, then don’t worry, you'll find your old favourites, like RVKs, KSAs and Isomax fans below.