Vortex Acoustic Ducting – 5 Metre Length — Noise Reduction for Grow Room Ventilation
Best for: Growers wanting to cut fan noise without swapping their entire ventilation system
Our thoughts
If noise is the weak point in an otherwise solid setup, this is the quickest fix. A short run of acoustic ducting on the extraction side takes real edge off the hum without killing airflow. We've used it enough times to know it works — noticeable difference, simple install, proper value for money.
Vortex Acoustic Ducting is a sound-insulated ventilation duct that reduces the noise generated by extraction fans and moving air in grow rooms and tents. Built with a perforated inner core, a layer of acoustic fibreglass insulation, and a durable outer flexi-layer, it lets air move freely while stopping vibration from travelling down the ducting. Think of it as a silencer for your ventilation system — not magic, but genuinely effective.
How it compares
Vortex Acoustic sits in the mid-range noise-control segment.
- Standard aluminium or combi ducting: cheapest, zero sound dampening
- Vortex Acoustic Ducting: proven fibreglass insulation, widely stocked, entry-level acoustic pricing
- Premium alternatives (Phonic Trap, Ultra Silent): higher price point, marginal gains for most setups
In plain terms — you get proper noise reduction at a price that doesn't require a second mortgage. The performance difference between this and budget standard ducting is night and day.
Usage guidance
Where to install it
Most effective on the fan exhaust side or immediately after the extractor fan itself. Even a 1–2 metre run makes a real difference. Many growers use acoustic on the noisy bit and standard ducting elsewhere to manage cost.
Installation
Fits directly over the flange of your extractor fan or filter — no specialist tools needed. Secure with a duct clip to hold it tight. The ducting is flexible enough to run around corners; just try to avoid sharp right angles where possible, as gentle bends reduce turbulence and noise further.
Optimization
Acoustic ducting works best when combined with other noise-reduction measures. Pair it with a silencer on the exit, or hang your fan from bungee cords to isolate vibration. Together, these three things (acoustic ducting, silencer, fan isolation) can make your ventilation genuinely discreet.
What it won't do
It won't silence the fan itself — just the noise from air rushing through the duct. If the fan motor is loud, that's a separate problem (bungee isolation or a quieter fan helps there).
Technical specifications
- Length: 5 metres
- Available diameters: 100mm (4″), 125mm (5″), 150mm (6″), 200mm (8″), 250mm (10″), 315mm (12″)
- Construction: Inner perforated flexi-ducting + fibreglass insulation layer + outer polyester laminated flexi-ducting
- Helix: High tensile steel wire spiral
- Coating: Polyester laminated
- Fire resistance: Tested and certified
- Flexibility: Flexible and hard-wearing; can bend without creasing
- Heat emission: Lower than standard ducting due to fibreglass insulation
Who this is for
- Growers in noise-sensitive environments (bedrooms, lofts, shared housing)
- Anyone running extraction fans where noise carries to neighbours or family
- Setups where everything else is dialled in but the ventilation hum is still a problem
- Budget-conscious growers who want acoustic benefits without premium pricing
- First-time upgrade buyers wanting noticeable results without system overhaul
Particularly suited to growers who need stealth ventilation without rebuilding their entire setup.
Our take
This is proper ducting that does exactly what it claims — cuts noise without strangling airflow. The fibreglass insulation works, the build quality is solid, and at this price point it's one of the best entry-level moves you can make if fan noise is an issue.
If ventilation hum is becoming a problem, this is worth picking up while clearance stock lasts. One of the easiest and most cost-effective upgrades going.
