The VIND 150 mm Silenced Inline Fan is our own fan, built for one job: moving real air through a house without anyone noticing it is running. An EC motor with PWM speed control sits inside a fully insulated 40–50 mm acoustic chamber, suspended on vibration-damping springs, driving a mixed-flow impeller that holds pressure through long duct runs and filters. 480 m³/h (133 L/s) at 42 W, measured at 41 dB. A manual speed controller and a 3 m power cord are in the box — it runs the moment you plug it in.
Silence built into the housing, not bolted on afterwards
Most inline fans are a bare motor in a metal tube, and every strategy for quietening one down — wrapping it, boxing it in, adding a silencer to the duct — is something you buy and fit afterwards. The VIND 150 starts from the other end. The motor is suspended on internal springs so mechanical vibration never reaches the shell, and the whole body is a 40–50 mm high-density acoustic chamber that absorbs both motor noise and the rush of air passing through it.
That distinction matters most where these fans usually end up. Under a suspended floor or above a ceiling, the noise people complain about is not the fan — it is vibration finding its way into joists and floorboards and turning the structure into a speaker. Isolating the motor is what stops that at the source.
Pressure, not just a flow figure
Airflow ratings are measured with nothing attached. Real installations have metres of duct, bends around piers and services, sometimes a carbon filter, and every one of those takes a bite out of the number on the box. The mixed-flow impeller in the VIND 150 is built for static pressure — 583 Pa of it — which is what decides how much of that 480 m³/h actually reaches the other end of a long or restricted run.
It draws 42 W doing it. That is what makes continuous operation sensible rather than something you switch on occasionally and forget about.
Manual control in the box, automation when you want it
A manual PWM speed controller is included, giving stepless adjustment from the moment it is plugged in — no app, no pairing, no account. Set a speed, leave it, done.
When you want the fan making its own decisions, the VIND Temperature & Humidity Controller (sold separately) replaces it, adding independent temperature and humidity thresholds, auto and timer modes, and alarms — still direct-wired, still no app.
Specifications
| VIND 150 mm Silenced Inline Fan | |
|---|---|
| Model | VIND-SIL-150 EC |
| Duct size | 150 mm (6″) |
| Max airflow | 480 m³/h (133 L/s, 282 CFM) |
| Max static pressure | 583 Pa |
| Noise level | 41 dB |
| Motor | EC motor with PWM speed control, spring-suspended |
| Power consumption | 42 W |
| Max current | 0.8 A |
| Fan speed | 5,000 RPM |
| Voltage | 100–240 V |
| Acoustic insulation | 40–50 mm high-density noise-absorbing foam |
| Overall length | 540 mm (body 450 mm + 47 mm sleeve each end) |
| Housing diameter | Ø210 mm |
| Duct connection | Ø147 mm inner, Ø210 mm outer flange, reinforced collars both ends |
| Hanger mounts | 123 mm spacing, 19 × 10 mm slotted holes |
| In the box | Fan, manual PWM speed controller, 3 m power cord |
| Warranty | 2 years, Australia-wide |
Hangers and ratchet straps are not included.
Tested under standard lab conditions for consistent reference airflow performance.
FAQ
150 mm or 200 mm — which do I need?
As a general rule, 150 mm suits a smaller footprint and a short, reasonably direct duct run. Step up to the 200 mm for a larger subfloor, a long run, or where the duct has to bend its way around piers and services before it reaches an outside wall. Length and bends both cost airflow, so a difficult run wants the bigger fan even when floor area alone would not say so. Send us the dimensions and how the duct has to travel if you are near the line — an oversized fan turned down is quieter than a small one at full speed, so it is rarely the wrong way to err.
How does the airflow compare with a ceiling or bathroom exhaust fan?
Installers rate exhaust fans in m³/h or L/s. The VIND 150 moves up to 480 m³/h (133 L/s) at full speed. For comparison, the National Construction Code minimum for a bathroom or toilet is 25 L/s (90 m³/h), and 40 L/s (144 m³/h) for a kitchen or laundry, discharged outdoors rather than into the roof space. Real airflow drops with every metre of duct, bend and grille, which is where the 583 Pa static pressure rating matters. Check the requirements for your job with your installer.
Which size do most people use for a bathroom?
Most people use the 150 mm for a bathroom, or the 100 mm for smaller rooms such as ensuites and toilets. The larger the fan, the quieter it is for the same airflow, because it can run slower. What suits your job also depends on the space in the ceiling, the duct route and how much noise you can live with, so if you are unsure, send us the details and we will help. Do not install the fan, controller or power connection directly over a shower or bath, or anywhere it can get water spray.
Is 41 dB actually quiet?
41 dB is the lab figure at full speed, and turning it down puts it below that. But the number is only half the story: what people notice through a floor is low-frequency vibration, not airflow hiss. That is the part the spring-mounted motor and the insulated chamber are there to kill, and it is why this fan reads as quieter in a house than a bare fan with a similar dB rating on paper.
Does the included controller do temperature and humidity?
No. What ships in the box is a manual PWM speed controller — you set a speed and it holds it. Temperature and humidity automation is the separate VIND Temperature & Humidity Controller, which replaces the manual one rather than working alongside it.
Can it run continuously?
Yes, and that is what it was built for. EC motors are designed for long runtimes, and at 42 W the running cost of leaving it on is small enough that round-the-clock ventilation is practical rather than a luxury.
Will it pull through a carbon filter?
Yes. 583 Pa of static pressure is the figure that matters for filtered setups, and it is comfortably enough for a 150 mm filter plus a sensible length of duct. The airflow you end up with will be lower than the free-air 480 m³/h — that is true of every fan, and it is why the pressure figure is the one to compare.
How much space do I need to fit it?
540 mm end to end and Ø210 mm across the body — noticeably fatter than a bare 150 mm fan, because the acoustic chamber is the reason it is quiet. Measure the cavity before ordering, particularly between joists or in a tight roof space, and check there is room for the duct to leave the fan without an immediate hard bend.
Does it come with hangers?
No — hangers and ratchet straps are not included. The housing has slotted hanger mounts at 123 mm spacing (19 × 10 mm holes) so it takes standard rope ratchets or fixed mounts, whichever suits the install.