Fans are essential for maintaining airflow, temperature balance, and healthy plant growth in indoor grow spaces. Extractor fans remove stale air and heat, while circulation fans move air around the canopy to prevent hot spots and humidity build-up.
New to indoor growing?
Our Indoor Growing & Hydroponics Explained guide breaks down how airflow, ventilation, lighting, and CO₂ work together in a controlled grow environment — helping you choose the right fans and climate equipment for your setup.
Why Fans Matter in Indoor Growing
Fans play a critical role in keeping your grow environment stable and productive. Fresh airflow supplies plants with carbon dioxide (CO₂), helps regulate temperature, and prevents moisture from settling on leaves.
A well-designed airflow setup reduces the risk of mould, pests, and plant stress while improving overall growth consistency.
Extractor (Inline) Fans
Inline fans are used to pull warm, stale air out of the grow space and replace it with fresh air from outside. They are commonly paired with carbon filters and ducting to manage heat and odours.
Circulation Fans
Circulation fans move air around the grow room, strengthening plant stems and preventing stagnant air pockets. They help eliminate hot and cold spots and keep humidity evenly distributed across the canopy.
When selecting fans, consider:
The size of your grow room or tent
Whether you need air extraction, circulation, or both
Heat output from lights and equipment
Noise levels and mounting options
From G.A.S EC extractor fans to RAM clip-on circulation fans, Doctor Blooms stocks a wide range of reliable airflow solutions for growers at every level.
If you need help choosing the correct fan size or airflow setup, our team is happy to advise.
📞 Call 01279 501857 or visit our Bishop’s Stortford showroom for expert guidance.
