Extractor Fans

Extractor fans for grow tents

Your extractor fan sizes the whole extraction chain — undersize it and you get heat spikes, damp, mould-friendly humidity and smell leaks; oversize it slightly and run it on low, and it's quieter, cooler and lasts longer. As a rough guide, size for your tent's volume in m³ times 60 air changes an hour, then add 25% for the resistance a filter and ducting add.

We stock fans across the full range: the Systemair RVK is the dependable everyday workhorse from 4" to 12"; IsoMax Acoustic (Airforce 2) fans have an insulated body for noise-sensitive spaces; Rhino Ultra Silent EC fans use an EC motor for the most efficient, near-silent running, pairing with a digital controller; and the Phresh EC Silenced HyperFan and VivoSun AeroZesh round out the EC options. Airfan Hybrid and Thermo Foam Box Fans are heavy-duty box units for bigger rooms.

Getting the size right

Round up between sizes rather than down — a 6" fan on half speed beats a 5" fan flat out, every time, on noise and headroom for hot weeks. Match the diameter to your carbon filter, or see the full fan and filter sizing guide for the exact m³/h figure per tent size. Prefer it all matched for you? Our extraction filter kits bundle fan, filter and ducting for your tent size.

Next-day UK delivery available, free over £50. Free pickup from our Wembley store.