Extraction Kits

An extraction kit bundles the fan, carbon filter, ducting and clamps in matched sizes. It removes the single most common setup mistake, mismatched diameters, and costs less than buying the parts separately.

Why matched sizing matters

A 6in filter on a 5in fan chokes both. The fan works harder, moves less air, runs louder and the filter never sees the airflow it was designed for. Fan, filter and ducting all want to be the same diameter, and a kit guarantees that.

Which size

Size on the lighting load as much as the tent. A 1.2m tent running 600W of HPS wants more extraction than the same tent running 400W of LED.

What is in a kit

• Inline fan, AC or EC depending on the kit
• Carbon filter, sized to the fan's airflow
• Ducting, usually combi or acoustic
• Jubilee clips or duct clamps for every joint

Rope ratchets to hang the filter are worth adding if the kit does not include them, see hangers.

Set it up as extraction, not intake

Air should be pulled through the filter and out. Filter inside the tent, fan after it, ducting to the outside. That keeps the tent under slight negative pressure so every bit of air leaving has been scrubbed, which is what actually controls smell. See odour control.

Related

See extraction fans, carbon filters, ducting, silencers and speed controllers.

Why buy an extraction kit from The Hydro Bros?

We are a hydroponics shop in Croydon and we size these daily. Tell us the room and the lighting load and we will pick the kit. Discreet UK and European delivery, and excellent customer reviews on Trustpilot.