Silenced Inline Fan by HVC — Quiet EC Mixed Flow Extraction Fan, 150mm to 315mm
HVC-FAN-SIL-150MM
A mixed flow inline fan built into an acoustic housing for quiet, high-pressure extraction. Four sizes from 150mm to 315mm, speed controller included.
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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.
Specifications
| 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
Pairs Well With
Headwind's matched filter for every fan size, 150mm to 315mm, with two pre-filters in the box.
Smart Speed Controller by HVCSwap the manual dial for automatic control, with fan speed that follows your room temperature.
Seahawk DuctingDucting to join filter, fan and exhaust. Stretch it tight for the quietest run.
Dura Mixed Flow Fan by HVCThe IP68 waterproof pick for rooms that run above 90% humidity, where this fan should not go.
Ventilation AccessoriesDuct tape and grip tape to seal every join so the fan pulls through the filter, not through gaps.
Inline & Exhaust FansEvery inline fan we stock, from compact tent fans to big-room extraction.
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.
