Top Choices Of The Best Inline Fan For Grow Room And Grow Tents

As an indoor gardener, I understand the importance of having the best inline fan for grow room. It provides a lot more growing seasons in a year, higher quality of plants and lesser worries on external variables such as pathogens, chemicals and foul odors.

In this article, I’ll share with your some of the best choices of inline fans for grow tents and grow rooms. These choices will be based on customer reviews as well as other sensitive factors such as efficiency, durability, affordability and safety.

Provided that there are a lot of choices out there, I’ll also share with you some considerations to make when buying inline fans to make sure you are looking at your ideal choice.

**Below, you’ll find our more detailed reviews, but you can also click the links above to see current prices or read customer reviews on Amazon.

Top 3 Picks: Best Inline Fan For Grow Room

Things To Consider When Buying Inline Fans For Grow Rooms And Grow Tents

Inline fan is an important and useful component of any grow room’s air circulation system. As it can be used to deliver clean air to the plants, it also cleans the air as it exits from the exhaust.

When connected with a filtration system, it even provides better performance as it filters odor and pathogens from the air within the grow room. While investing in an inline fan for your grow room is an excellent decision, not all of it may fit your specific requirements.

Listed here are some considerations to make sure you are buying the right inline fans for your specific grow rooms.

Fan Rating And Speed

One important consideration when buying inline fans for your grow room or grow tent is the fan’s speed or rating. The rating or speed of the fan dictates how much air circulates within the system.

If you’re looking to have more air circulation in your grow tent, buying a fan with higher speed and rating setting would be ideal.

For you to compute the ideal speed and rating for your fan, you simply use the formula L x W x H of the grow room/tent multiplied by 20 – this will be the total amount of air within an hour.

Compatibility With Carbon Filters

Inline fans work best in filtering air if they are used with carbon filters. When buying inline fans, make sure that it is compatible with the carbon filter that you are using. Check the components, connectors, washers and hole diameter.


The size of your inline fan is likewise an important consideration to make. It should come with a size that perfectly fits and matches the size of the air duct and the growing area.

While bigger sizes of inline fans could provide more power and air in the grow room’s air circulation system, it may not be suitable for light to medium air system settings.

Noise Levels

One thing that I personally do not like about inline fans is that they can be noisy during operation. Fortunately, with constant improvements and better material alternatives, it now produces much tolerable noise and sometimes even creates almost zero noise during operation.

A good way to check the noise levels out of your inline fan is to test it out before making a purchase.

Ease Of Use And Installation

Of course, you would also want an inline fan that is easy to use and does not require complicated set up, installation or any rigorous preparation. Make sure that you understand how it works and how to perform maintenance when needed.

With regards to installation, you may want to have your inline fan with helpful accessories that can make the installation much easier and faster. Among those accessories and tools, you want to have with your inline fan include mounting brackets, base, extra bolts or screws for customized setups, and others.

Speed Control Settings

Not all the time you will require your inline fan to work at its top speed. Sometimes you will also need it to run a little slower especially if you’re only looking to filter the air from your grow room. Besides, having your inline fan run at its top speed all the time can cost you on your electricity bill.

This is why it is also an ideal choice to go for inline fans with speed control settings. The more speed settings you can have for your fan, the more flexibility you can have out of it for different purposes.

Top 5 Inline Fans For Grow Rooms And Grow Tents

There are certainly tons of inline fans to choose from in the market and it is challenging and daunting to find the ideal one that suits your needs. To relieve you of that problem, I’ll share with your some of the best options that I’ve personally tried.

They are as follows:

1. VIVOSUN 6 Inch Inline Duct Fan

VIVOSUN 6 Inch Inline Duct Fan, 440 CFM Ventilation Fan with Variable Speed Controller for Grow Tent, Indoor Garden Ventilation, Black

One popular choice of inline fan that is used by most indoor gardeners like me today is the VIVOSUN Inline Duct Fan with its optimum durability and flexible control settings.

What I personally like about this inline fan is that it is made from high-quality steel which ensures long life of use and is also powder coated with aerodynamic powder coating to make sure that it is resistant to rusting as well as corrosion.

It also comes with a speed controller which provides the convenience of operating the fan in different speed preferences. This choice of inline fan is also quite easy to use and install.

Furthermore, it comes with an array of accessories and inclusions to help with the installation and setup such as the mounting brackets and the instructional pamphlet. It has an average fan size of 6” which fits the medium to large fan requirements of modern grow rooms and tents.

Also, this is much lighter than other alternatives with only 10.35 pounds for its total weight.


  • With instructional pamphlet and mounting brackets
  • Lightweight
  • Made from durable Alloy Steel
  • Powder coated for resistance against rust and corrosion


  • Rather small in size
  • Without noise-reduction feature
  • Creates vibrations

Buy on Amazon

2. iPower 6 Inch Inline Duct Ventilation Fan

iPower 6 Inch 442 CFM Inline Duct Ventilation Fan HVAC Exhaust Blower for Grow Tent, Grounded Power Cord

As a last alternative, you can also invest in the iPower Inline Fan if you want a fan that is guaranteed to relieve heat from your grow room or grow tent.

Among those features that I like about this product is its versatility where it can be installed and set up on any environment such as Attics, greenhouses, bathrooms, and anywhere else. It comes with composite blades with a central hub that guarantees lesser noise and vibration during operation.

Also, this product doesn’t require any maintenance for the reason that it’s bearing already comes permanently lubricated for zero maintenance and also for zero rusting. It has a standard size of 6 inches and is much cheaper than those earlier mentioned in this list.

This product is also guaranteed to last long with its ceramic coated frame. It has a total weight of 10.6 lbs which is much lighter than others under the same size and is available with 1 year limited warranty.

Possibly, the only disadvantage of this product is that it can only withstand temperatures that are no more than 176 Fahrenheit degrees and the ceramic components can be prone to chipping or breakage.


  • Quite performance with only 50 decibels for its noise levels
  • Excellent choice for hydroponics
  • Lubricated bearing for lesser noise and vibration


  • Cannot handle heat more than 176 Fahrenheit degrees
  • Ceramic components may be fragile and are prone to chipping

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3. Hydrofarm ACDF8 Active Air Inline Fan

Hydrofarm ACDF8 Active Air Inline Fan, 8 Inch, Green

If you prefer an inline fan of bigger size for your grow room, maybe you would want to invest in the Active Air Inline Fan.

This fan is also a popular choice among grow tent owners because of its rather durable construction which is made from materials such as ceramics and high quality metal. The only drawback of using such materials is that it makes the equipment heavier than other options – providing a total weight of 15.2 lbs.

It also comes with a set of brackets for easy installation and setup and comes pre-wired with a 120V cord. In addition, this fan is also equipped with a molded impeller and is designed with a thermally-protected AC motor for longer lasting performance.

With its UL-recognized components and parts, this fan operates much quieter than its competitors. Although it doesn’t come with a built-in speed controller, it can be easily setup and installed with one externally.


  • Can be installed with a speed controller
  • Fits most size requirements of grow tents and grow rooms
  • Compatible with majority of carbon filter sizes


  • Much heavier than other alternatives
  • Not recommended to use outdoors

Buy on Amazon

4. Neverest RV-B 6 Inch Inline Fan

neverest RV-B 6 Inch Inline Fan 412 CFM Industrial Grade Duct Exhaust Fan Combinable with HEPA Filter & Carbon Filter Powerful HVAC Booster Fan / Metal Housing

Another excellent inline fan to use for any grow room or grow tent garden is the Neverest Inline Duct Fan with its durable body and its rather more convenient price.

This fan has been carefully modified to deliver optimum air flow in any environment and not just in grow rooms or grow tents. This product can also be used as a commercial cooler to provide cooling to open environments such as bedrooms, hospital rooms and others.

It is designed with aerodynamic fame which is made from high quality steel and powder coated for rust and corrosion resistance. While this product is much cheaper than other options, it is also a favorite choice by many because it comes with a 1 year limited warranty.

It has a standard size of 6 inches which fits most inline fan requirements and provides an air movement speed of 412 CFM or 2400 rpm. Along with the fan is the set of the mounting brackets and the instructional pamphlet in the package.

Also, this unit doesn’t come with a built-in speed controller however can be easily set up with one externally.


  • Affordable
  • With 1 year warranty
  • Can be set up with external controller
  • Durable frame


  • Creates a loud noise during performance
  • Not very durable brackets

Buy on Amazon

5. Vortex Inline Fan

Vortex 347 CFM S Line S-600 Fan, 6'

The Vortex Inline Fan could also be worth looking to have if you want a fan that is tried and tested for optimum performance.

This choice of fan is popular among professionals because it comes from the s-line series of fans which are a collection of fans that are guaranteed to provide efficiency, quiet operation and optimum performance that far exceeds its competitors.

This fan also saves you more on your monthly electricity bills since it is designed with energy efficient features such as the AC Brushless motor with mixed-flow dual impellers for energy-saving operation.

It is also designed with walls that are double insulated, noise reduced as well as resistant to high impact and pressure. Compared to other conventional inline fans, this product is much more durable with its polycarbonate casing and integrated with back draft damper.

Of course this product also comes with a mounting bracket which helps for easy installation and setup. Despite the added price for this inline fan, it is guaranteed to provide excellent performance and quality which is superior to its competitors.


  • Lightweight
  • With dual impellers
  • Insulated walls
  • Comes with a controller
  • Noise-reduced performance


  • Expensive
  • Slow movement of air at 347 CFM only

Buy on Amazon


One excellent inline fan that we would personally recommend in this list is the Apollo Horticulture Inline Duct Fan because it provides a good amount of air flow as well as circulation despite its more affordable price compared to the other options mentioned in this list.

It also provides excellent durability with its parts and components that are made from high quality steel and powder coating for rust and corrosion resistance. Also, it comes with a weight that is more manageable than other options.

If you want to know more about these products or if you have comments and suggestions, do message us through our comment box located below. As soon as you send us a message, we’ll get to you right away.

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