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Grow Room Ventilation & Climate

Fresh air keeps indoor plants healthy. Our Ventilation & Climate range pulls stale, humid air out of a grow space and draws clean air in. That holds back mould and pests, steadies the temperature, and clears any smell from herbs or ripening fruit.

Pair an extractor fan with a carbon filter to scrub the outgoing air, then add a controller to run it all on its own. The fans and filters here are built by G-Tools and Prima Klima.

Shop Ventilation & Climate by category

Extractor Fans

Extractor Fans

Move stale air out and draw fresh air in.

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Carbon Filters

Carbon Filters

Scrub odours from the extracted air.

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Fan & Climate Controllers

Fan & Climate Controllers

Automate fan speed, lighting and timing.

View Controllers
Prima Klima Filters Dutch-built carbon filters
Quiet Extraction Silenced fan options
Odour Control Carbon scrubbing for fresh air
Free UK Delivery On the ventilation range

About Our Ventilation & Climate

A sealed grow space heats up and turns humid fast, and that invites mould. Ventilation fixes it by swapping the air several times an hour. An extractor fan does the work; a carbon filter on the inlet or outlet takes out any odour. We stock G-Tools GT and Prima Klima fans alongside the Prima Klima K2600 and K1600 filter ranges.

Size the fan to the space and match the flange to the filter. Flanges here run from 100mm up to 200mm, moving between 185 and 1350 cubic metres of air an hour.

Why We Added This Range

"The mistake we see is a fan that is too weak, or one that does not match the filter neck. Buy them as a pair. A GT or PK fan with the matching Prima Klima filter keeps the air sweet and the plants clean, with no guesswork."

Matt, Founder of Greenhouse Stores

💡 Tip: Match the flange sizes. A 125mm fan needs a 125mm filter, or the joint leaks air and the extraction never works properly.

What is in this section

CategoryBest forFrom
Extractor Fans ⭐ Matt's PickMoving air through the space£7
Carbon FiltersRemoving smell from the air£40
Fan & Climate ControllersAutomating fans and timing£100

Frequently asked questions

Why does a grow space need ventilation?

It swaps hot, humid air for fresh air several times an hour. That holds back mould and pests and steadies the temperature for healthy plants.

How big a fan do I need?

Size the fan to the room volume and the filter neck. Our fans move 185 to 1350 cubic metres an hour, with flanges from 100 to 200mm.

What does a carbon filter do?

It scrubs odour from the air the fan moves. Activated carbon traps the smell from herbs or ripening fruit before the air leaves the space.

Do the fan and filter need to match?

Yes, match the flange diameters. A 125mm fan pairs with a 125mm filter, or the joint leaks and extraction drops off.

Are the fans noisy?

Several models come with a silencer to cut the noise. The G-Tools mini fan is quiet enough for a cabinet in a living space.

Need Help Choosing?

Call our team free on 0800 098 8877