G.A.S. DiffuseAir

In stock online
Standard Delivery £6.95*
Free Delivery - orders +£65 Free Delivery - orders +£65
Plain Packaging Used Plain Packaging Used
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Product Name Qty Price
G.A.S. DiffuseAir - 100mm/4"
G.A.S. DiffuseAir - 125mm/5"
G.A.S. DiffuseAir - 150mm/6"
G.A.S. DiffuseAir - 200mm/8"
G.A.S. DiffuseAir - 250mm/10"


Wave goodbye to oscillating fans as the newest ventilation system has arrived, and it is not one to miss! The G.A.S. DiffuseAir system offers you complete control over the climate of your grow room.

The clever design of the DiffuseAir does pretty much what it says in the name! It ensures that air is diffused uniformly around the grow space, rather than being directed straight at your plants like an oscillating fan would.

As a result, your environment stays consistent, and any microclimates, high humidity zones and hot spots are eliminated. Harsh air streams that a typical fan would produce are gone, helping to decrease the chance of wind burn on the plant itself and salt accumulation in your growth media. It also rids of those inevitable cold spots that an oscillating fan would cause!

The DiffuseAir is flexible and can be used within a couple of different scenarios, though it must always be attached to an extraction fan (not included) to work.

If you wanted to use this system to evenly diffuse air as it is drawn in to your grow room, you would add ducting to the fan, pulling air into your grow room from your preferred location. The DiffuseAir then acts as an intake fan to distribute CO2 rich air throughout your grow room.

Otherwise, you could simply use it as a standalone system to efficiently mix the air already in your grow room. Air will be pulled in from the top of your grow room, and the DiffuseAir system will push it back out above the canopy, moving air evenly between your lighting and plants. You could also use multiple DiffuseAir systems in large grow rooms to effectively distribute air around.

One of the best things about this system is that it takes up no floor space at all, and can be up and running within minutes! The set-up is simple – all you need to do is attach it to the correct size of extraction fan and then hang it up. Four holes near the top of the unit allow you to easily screw it into an extraction fan and each DiffuseAir also comes with hanging plates. Rope ratchets or chains will finish the job nicely!


  • Uniformly distributes CO2 rich air around the grow space
  • Eliminates unwanted microclimates, hot and cold spots
  • Decreases the chance of wind burn on the plants leaves
  • Use with an RVK, Kaizen or similar extraction fan (not included)
  • Easy to fit and hang using rope ratchets or similar
  • Available in 4" through to 10" duct sizes

Delivery & Returns
Free Delivery
We are pleased to offer free standard shipping to UK Mainland on all orders over £65.00 *Heavy item surcharges are still applicable.
Next Day Delivery
In a hurry for your order? Order before 1 pm Mon - Thurs for next working day delivery *subject to stock availability T&C's apply.
Different delivery address?
Do your goods need shipping to an alternative address? If so, paying by bank transfer gives you the freedom to have them delivered to anywhere in the UK.
Free Returns
Faulty or damaged item? No problem, contact us on 0800 038 7100 or email customer service and we can arrange a free collection.
Plain Packaging
All parcels, no matter how big or small, are dispatched in plain packaging using black wrap that's secured using 'fragile' tape.
How to Pay
Credit / Debit Cards
We accept all major credit and debit cards. Please note: When paying by credit card we can only ship to the card statement address.
Simply select this option at checkout if you prefer to pay through PayPal. Please note: When paying by PayPal, we can only ship items to the account owners confirmed address.
Bank Transfer
Select the option for Bank Transfer at checkout if you wish to receive your item anywhere within the UK. Please use your order number as payment reference.
Split your purchase into manageable payments. Buy now and pay in 30 days or in three interest-free instalments with Klarna.
Click & Collect
Collect your online orders in as little as under an hour*! Simply pay online, choose your store & collect for free! Available from Manchester & Huddersfield (*subject to stock availability).
Brand Global Air Supplies
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