Inline fan Noise

Inline fan Noise Reduction: The Best Guide so Far

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Indoor farming comes with its challenges. Inline fan noise is one of the major problems you have to deal with.

But that shouldn’t be the case.

There are simple techniques you can apply and deal with the noises that you get from your inline fan.

In this article, we will give you a detailed guide on the best way to deal with the inline noise fan.

But before we do that, it’s important first to understand why your fan makes noises.

Causes of Inline Noises

Causes of Inline Noises

When it comes to noise reduction, you must understand the cause of the noise if you wish to deal with it once and for all. Unless you do this, you won’t understand the problem that you are dealing with.

The following are some of the causes of noises that you would hear coming from your inline fan.


This is the number one contributor to noises that you will hear coming from your fan. When the fans are running at high speed, they blow much air that causes the noise. When the speed is reduced the noise reduces as well.

Vortex Shedding

This is a noise caused by air separation from the trailing edge and blade surface. The noise is more when your fan doesn’t have a good blade profile design, serrated or notched blades ages, and a proper pitch angle.


Turbulence comes from the airflow stream in the inline fan. It’s one of the major causes of the noises, and it’s increased by bends and sharp edges, and inlet and outlet disturbances.

Structure Vibration

Structural noises come from mechanisms and components within the fan. These could include things like motor mounting, bearings, rotor to stator eccentricity, and residual unbalance. If any component is loose in the fan, it will also produce some rattling vibrations.

Fan Load

When fans are operated at their maximum efficiency, they tend to make more noise. You load them with a lot of work and as a result, their components make more noise. This type of noise is similar to the one that comes as a result of high speed.

Simple Ways to Reduce Inline Fan Noise

Here are things you need to do if you wish to deal with the noises that come from your inline fan.

1. Inspect And Understand The Nature and Source Of Inline Fan Noise

We have already shared with you different causes of inline fan noises. Each of these causes needs different techniques to deal with the noise.

Therefore, if you want to be effective in reducing the noises coming from your inline fan, it’s recommended first to start by inspecting your fan.

Listen to the nature of the sound you are getting from it.

This stage is critical and will ensure that once you start applying any technique, you will do what is required.

If you are not sure where the noise is coming from, get someone else to check it. The point here is to know where the noise is coming from so that you can deal with it easily.

Identify if there is a problem with your inline fine. And when you find anything that’s making noise try and fix it even before soundproofing.

Most of the structural noises are due to loose parts. These don’t need to be soundproofed. All that is required is to fasten the loose parts.

Speed or overloading could be a problem also. So, in this case, all you need to do is reduce the speed and minimize the level of pressure and load that you have exerted on your inline fan.

2. Use An Acoustic Enclosure

An Acoustic Enclosure

The best way to deal with the inline fan noises is to use an acoustic box enclosure. Acoustic enclosure is designed with sound-deadening materials. When the fan is put inside all the noises are shielded and not heard from outside.

You can easily build the box for yourself. All you need is woodwork skills. Over the walls of the enclosure, you can use acoustic foams to help mask the noise coming from your fan.

The most important thing is to ensure that you don’t block the airways for the fan. If you block the airways, the fan won’t perform as expected.

The goal should be to reduce the noise from your fan and ensure it function as possible.

3. Use Inline Fan Insulated Ducting

Some of the noise you will hear from your inline fan will pass through the ducting. And the best way to deal with this kind of noise is to use insulated.

You get to deal with the noise before it escapes from the ducting.

If you don’t have insulated ducting, go ahead and buy them on Amazon. Choose to ducts with the same diameter as your inline fine.

4. Buy and Install a Silence on the Exhaust Duct

In the market, you will find silencers designed to be attached between the carbon filter and exhaust fan. All the silencers have a muffler that absorbs noises coming from your inline fan. So, the noise will be dealt with before it causes any disturbance.

The silencers absorb the noises that would have been left to escape from the inline fan.

If you are looking for the best silencer in the market, buy VIVOSUN Noise Silencer. It’s available on Amazon. The silencer comes in different sizes – you won’t have to worry about the size that will perfectly fit your inline fan.

Inline fan Noise Reduction

5. Use Speed Controller

We already mentioned that one of the major causes of inline fan noise is over speeding. And the only to deal with this problem is to control the speed of your inline fan.

The best way to deal with this is to buy fans that come with different speed settings. This means that you can adjust the speed of the fans as you desire.

But if you already have fans without these functions, you can buy a fan speed controller. It will function well in setting the level of speed that you wish for your fan.

6. Buy Quiet Inline Fans

The best way to deal with noises from your inline fan is by buying a quiet fan. You get to deal with the noise even before it causes any disturbances.

The following are the best inline fans you can buy from Amazon today. Buy one and install them over your Grow room and enjoy silent growing.

AC Infinity Cloudline S6 (Our Top Pick)

The fan is perfect for a mid-sized grow tent. It achieves an airflow of 351 CFM.

Key Features

  • Ideal strength for a mid-size room
  • Extremely quiet
  • The variable setting for efficient power consumption

TJERNLUND M-67 Inline Duct Booster Fan

The fan attains a power output of 460 CFM. This means it can run for a long time without changing its performance.

Key Features

  • Made with strong and high-end materials
  • Efficient blade design to blog a huge volume of air
  • Super quiet fan

Vortex 347 CFM S Line S-600 Fan 6”

With it, you will plant everything you would wish to plant in your tent or indoors.

Key Features

  • Mounts easily
  • Convenient with different speed controllers
  • A super quietest tent grow fan even at the highest speed

Hurricane Inline Fan

This makes it a perfect choice for anyone with a small grow area.

Key Features

  • Durable construction
  • Super Quiet Fan
  • Ease of installation

Terrabloom 10” Inline Duct Fan

It delivers a high airflow of up to 1065 CFM. At the same time, it’s cost-effective.

Key Features

  • Runs optimally for a longer period
  • Ultra-quiet fan
  • A powerful CFM coverage with a low energy consumption

Parting Shot

If noises have been a problem in your indoor growing, this shouldn’t concern you anymore. Apply any or all of the above techniques and deal with the noises coming from your inline fan.