HVC Silenced Inline Fan angled view showing the duct collar and insulated housing
HVC Silenced Inline Fan side view with Headwind HVC logo
HVC Silenced Inline Fan render showing the inlet and hanging tabs
HVC Silenced Inline Fan 150mm retail box, 594 m3/h, speed controller included
HVC Silenced Inline Fan 200mm retail box, 1,205 m3/h, speed controller included
HVC Silenced Inline Fan 250mm retail box, 1,808 m3/h, speed controller included
HVC Silenced Inline Fan 315mm retail box, 2,987 m3/h, speed controller included
HVC Silenced Inline Fan angled view showing the duct collar and insulated housing
HVC Silenced Inline Fan side view with Headwind HVC logo
HVC Silenced Inline Fan render showing the inlet and hanging tabs
HVC Silenced Inline Fan 150mm retail box, 594 m3/h, speed controller included
HVC Silenced Inline Fan 200mm retail box, 1,205 m3/h, speed controller included
HVC Silenced Inline Fan 250mm retail box, 1,808 m3/h, speed controller included
HVC Silenced Inline Fan 315mm retail box, 2,987 m3/h, speed controller included

Silenced Inline Fan by HVC — Quiet EC Mixed Flow Extraction Fan, 150mm to 315mm

HVC-FAN-SIL-150MM

$429.95
/
Tax included. Shipping calculated at checkout.

A mixed flow inline fan built into an acoustic housing for quiet, high-pressure extraction. Four sizes from 150mm to 315mm, speed controller included.

Size
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Pairs well with

Most of the racket from a standard inline fan is the motor and the air rushing through a bare metal housing, and it carries straight into your ducting, walls and sleep. The HVC Silenced Inline Fan from Headwind builds an EC mixed flow fan and a silencer into one housing lined with noise-dampening insulation, so you get high-pressure extraction without the drone. Four sizes cover a single tent through to a commercial room: 150mm (594 m³/h), 200mm (1,205 m³/h), 250mm (1,808 m³/h) and 315mm (2,987 m³/h), each with a speed controller in the box. Measured 3m from the inlet, the 200mm runs at 37.7 dBA flat out. The honest bits: a silenced fan is long (550mm to 940mm), so measure your space first, and it is not made for rooms that sit above 90% humidity.

Quiet, With Numbers to Prove It37.7 to 52.5 dBA at full speed, measured 3m from the inlet. The 150mm sits at 42.9 dBA, against 50.3 dBA for HVC's standard 150mm inline fan moving the same air.
Built for Pressure500 to 677 Pa of static pressure across the range, so it keeps moving air through a carbon filter and longer duct runs instead of stalling.
EC Motor, Smart Controller ReadyEvery size ships with a 0–100% variable speed controller, and it plugs into HVC smart controllers when you want fan speed to follow your room conditions on its own.
Matched HVC FiltersHeadwind pairs each fan with an HVC carbon filter of the same size, from the 150 x 300mm up to the 315 x 1000mm. No guesswork, no reducers.
150mm to 315mm594 to 2,987 m³/h across four sizes, from a single tent to a multi-tent room or commercial space.
12-Month Warranty, Parts in AustraliaCovered for 12 months, and replacement controllers, cables and extension leads are held by the Australian distributor, so a damaged lead does not mean buying a whole new fan.

Specifications
Brand: Headwind HVC (Hydroponic Ventilation Control)
Fan type: EC mixed flow inline fan with built-in silencer
Speed control: 0–100% variable speed controller included
Smart control: Works with HVC smart controllers (sold separately)
IP rating: IPX4
Electrical approval: RCM compliant
Frequency: 50/60Hz
Mounting: Mounting bracket, wall mount or hang
Use: Intake or exhaust, indoor use only
Operating range: -10°C to 60°C, below 90% humidity
Warranty: 12 months
Made in: China, distributed in Australia by Holland Forge
150mm 200mm 250mm 315mm
Model SE-A150J SE-A200J SE-A250J SE-A315J
Max airflow 594 m³/h (350 CFM) 1,205 m³/h (710 CFM) 1,808 m³/h (1,065 CFM) 2,987 m³/h (1,757 CFM)
Max power 40W 75W 150W 320W
Max speed 5,000 RPM 3,800 RPM 3,200 RPM 3,000 RPM
Max static pressure 500 Pa 520 Pa 510 Pa 677 Pa
Max noise (3m from inlet) 42.9 dBA 37.7 dBA 43.5 dBA 52.5 dBA
Length 547mm 699mm 859mm 940mm
Body diameter 243mm 304mm 353mm 415mm
Weight 5kg 7.5kg 13kg 21kg
Matched HVC filter 150 x 300mm 200 x 750mm 250 x 1000mm 315 x 1000mm

Performance figures are Headwind's laboratory data and can vary by around 10% in real installations.

Grower's Tip
  • Size up and run slower. A bigger fan turned down is quieter than a small fan flat out, and it leaves you headroom for the hot days.
  • Put the carbon filter first and let the fan pull through it: filter, fan, then duct to the exhaust point.
  • Hang the fan on straps or rope hangers rather than bolting it hard to the tent frame or a wall, so vibration has nowhere to travel.
  • Once the fan is silenced, most of the noise left is the ducting. Pull flex duct fully tight, keep bends gentle, and use acoustic duct on the exhaust run if you want it quieter again.
  • Match your duct to the fan's size. Reducers add restriction and whistle, so skip them where you can.
  • Put a pre-filter on any intake. Dust that builds up on the impeller throws it out of balance and shortens the fan's life.
  • Seal every join with clamps and tape and aim for slight negative pressure, with the tent walls pulled in a little. That keeps odours inside.

How To Set It Up
1Unpack the fan and spin the impeller by hand to check it turns freely without touching the housing.
2Plan the run: carbon filter, then the fan, then the shortest duct path to wherever you are exhausting. As an exhaust, mount it high in the opposite corner to your intake.
3Check the airflow arrow on the housing, then hang the fan or fix it with the supplied bracket so it pulls away from the filter.
4Connect ducting to both ends, lock it on with duct clamps and seal each join with tape.
5Plug the included speed controller securely into the fan before you connect power. Headwind's manual is clear that the controller goes on first.
6Power up, start at a low speed and step it up until your temperature and humidity hold where you want them, then check the tent walls are pulled in slightly.

Pairs Well With

Frequently Asked Questions
Does the HVC Silenced Fan come with a speed controller?

Yes. Every size, from 150mm to 315mm, ships with a 0–100% variable speed controller in the box.

Does it work with HVC smart controllers?

Yes. The Silenced Fan works with Headwind's HVC smart controllers, such as the HVC Smart Speed Controller, so fan speed can follow your room conditions instead of sitting on one setting. The smart controller is sold separately. See all of them in our Fan Controllers range.

How quiet is it?

At full speed, measured 3m from the inlet, it runs at 42.9 dBA (150mm), 37.7 dBA (200mm), 43.5 dBA (250mm) and 52.5 dBA (315mm), and lower again when you turn it down. It is not silent: you will still hear air moving at higher speeds, and most of that comes from the ducting, so stretch it tight, keep bends gentle and use acoustic duct on the exhaust side.

Which size do I need?

Match the fan to your carbon filter and duct size, and if you are between two sizes, go up and run it slower. Airflow is 594 m³/h for the 150mm, 1,205 m³/h for the 200mm, 1,808 m³/h for the 250mm and 2,987 m³/h for the 315mm. Our Fan Size Calculator will match a size to your space.

Can it run 24 hours a day?

Yes. The HVC Silenced range is rated for continuous 24/7 operation.

Can it pull air through a carbon filter?

Yes. With 500 to 677 Pa of static pressure it is built for filtered extraction. Headwind matches each size to an HVC carbon filter: 150 x 300mm, 200 x 750mm, 250 x 1000mm and 315 x 1000mm.

Can I use it for intake instead of exhaust?

Yes. Mount it low in a bottom corner with the airflow arrow pointing into your grow space, and fit a pre-filter to keep dust off the impeller. Run intake a little slower than exhaust to keep the tent under slight negative pressure.

Can I use it in a very humid room?

No, not above 90% humidity. Headwind rates this fan for rooms below 90% relative humidity and between -10°C and 60°C. For rooms that run wetter than that, the IP68 waterproof HVC Dura Mixed Flow Fan is built for it.

Is this the same fan as the HVC Inline EC Fan?

No. They are separate HVC fans. At 150mm both move 594 m³/h, but the Silenced Fan measures 42.9 dBA at 3m against 50.3 dBA for the Inline EC, and it comes in sizes up to 315mm.

Is there a warranty?

Yes. Headwind covers the HVC Silenced Fan for 12 months.

Can I get a replacement controller or cable?

Yes. Replacement controllers, cables and extension leads for HVC fans are available in Australia. Get in touch with your fan size and we will sort the right part.

Select Size

Quiet Extraction, Sized to Your Space

Speed controller in the box. Four sizes from 150mm to 315mm.

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