From designing and producing purpose-built environmental control equipment to working with some of the best manufacturers around the world, G.A.S are proud producers and distributors of some of the finest ventilation products available. 

While our roots lie in ventilation, we have expanded our product offering to include high quality horticultural products, so you get the best of both worlds. 

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FILTERS

From the filter of choice for growers – Rhino, to award winning CarboAir – quality and choice is at the heart of our filter range!

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FANS

Our range of silenced and non silenced fans means you can find the perfect fan for your environment

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CONTROLLERS

We offer AC Controllers, EC Controllers and combined technology AC-EC controllers, meaning you have lots of options to get the right controller for you.

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NUTRIENTS

We offer a range of nutrients and additives, including stimulants to enhance vegetive growth and flower production, and boosters to achieve optimal plant genetic expression.

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LIGHTING

We offer a full range of lighting solutions, from original CMH and HPS full fixtures to industry leading LEDs.

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GROWING SYSTEMS

From Deep Water Culture, to Drip Irrigation, and Flood and Drain to Aeroponic Propagators.

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Featured Products

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It all began with Van De Zwann: the House & Garden Story…so far

It all began with Van De Zwann: the House & Garden Story…so far 1990 – House

The perfect ventilation setup

Ventilation is a fundamental necessity for cultivating healthy plants. It plays a big role in