Top 10 Best Inline Fans for Cannabis Grow Room: 2018 Reviews

best inline fansGrowing cannabis requires lots of equipment, and this is especially true if you’re growing indoors in a grow room or tent. The right equipment, such as the best inline fans, enables pot growers to achieve more seasons annually and produce high-quality plants.

Besides, it allows you to grow cannabis with peace of mind without having to care about the outside weather conditions.

Whether you are raising your crop in a hydroponics setup or in the soil, having an appropriate ventilation is essential to control the temperature all the time. This is where inline fans come in.

Air fans are absolutely necessary for those who want to grow cannabis indoors with success, as they are capable of keeping a stable environment.

Lights release a significant amount of heat in a grow room. If not dissipated properly, it will eventually burn all the plants. Grow room fans provide much-needed ventilation for cannabis plants, thereby keeping desired humidity levels and removing carbon dioxide depleted air.

This way the fans keep your grow space fresh and prevent plants from burning. Now, let’s explore the top inline fans on the market.

Top 10 Inline Fans for Grow Rooms


Cannabis grow room ventilation offers numerous exhaust system and air circulation benefits. If you’re going to set up a grow room or tent for your crop, the inline fan is a key component you must purchase. So, take your time to check the best room fans showcased below and find out top rated fans on the market today.

10 Best Inline Fans for Cannabis in 2018

1. Active Air 10-Inch 760-CFM In-Line Fan

Active Air is a well-loved renowned brand for in line fans, which are highly beneficial when growing weed in hydroponics. Active air fans are known for their excellent design, great durability, and simplicity.

If you are in need of a quiet inline fan for cannabis grow room, this would be an excellent choice for you. This fan runs noiselessly while meeting all requirements a professional grade grow-op implies.

To prevent degradation and rust of the metal components, the fan is coated with a fine ceramic coating. The active air inline fan comes with a top-notch molded impeller. There is also the thermally-protected motor that prevents the unit from overheating. In addition, it includes all the necessary hardware and mounting brackets alike. However, speed controller is not included, so you’ll need to buy it separately.

The particular model measures 10 inches and it is great for small to medium size crops. Actually, Active Air offers five sizes ranging from the smallest 4-inch to the biggest 12-inch CFM fans.

Key features:

  • Quiet operation
  • Ceramic coated for greater durability
  • UL-recognized components for easy installation
  • Metal housing with durable steel construction
  • Includes prewired 8-foot 120V cord
  • Doesn’t include speed adjuster

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2. Hurricane 12-inch 1060 CFM Inline Fan

Hurricane inline fans are proven to be very efficient for cannabis grow room. So, it should not come as a surprise why many regard it as the best inline fan for grow room. Those are designed for the growers who need a professional-grade quiet inline exhaust fan.

Hurricane fans feature the steel housing that is coated with a quality powder finish. The matte black finish looks attractively, but more importantly, it protects the unit from corrosion in the humid growing environment. The UL-rated mechanism is another big plus since it allows for quiet operation.

This grow tent exhaust fan comes with mounting brackets and is quite easy to install. A power cord is also provided. Note that this product is sold as a fan only, so if need a carbon filter or a speed controller, you’ll need to go shopping for them separately.

Hurricane offers five models varying in size from 4 to 12 inches. That means you will be able to easily find one that would be the most suitable for your grow room.

Key features:

  • Noiseless operation
  • Commercial grade
  • Durable powder-coated finish
  • UL components
  • Comes with mounting brackets
  • 8ft 120-volt power cord included
  • Doesn’t include speed controller

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3. Vortex 10″ VTX1000 790 CFM Powerfan

Vortex inline fan is another great option for the price as regard to grow tent ventilation. While providing superior ventilation, the Vortex Powerfan still maintains a sleek design. Those fans are designed to give you a quality, long-lasting solution for your grow room, offering multiple options for any capacity needed.

VTX 790 CFM Powerfan is a 10-inch model that comes with rustproof powder coat. This epoxy finish prevents any buildup of rust. Besides the 10’’ model, there are another four model choices, such as 4-inch 172 CFM, 6-inch 497 CFM, 8-inch 747 CFM, as well as 12-inch model offering an impressive 1140CFM of volumetric flow.

What sets Vortex power fans apart from the crowd is their solid steel casing. This sound muffling casing serves to minimize noise while the fan is working. That makes Vortex Powerfan one of the  most tranquil inline fans on the market. You can rest assured that this grow fan will last you for many years because of the lubricated well-balanced monitor.

It has an extended collar included along with lip, which considerably facilitates duct hook-up. You are also provided with mounting brackets as well as a 120V power cord for the hassle-free installation. On the top of that, you will get a ten-year warranty. Well, there are a lot of good reasons to consider buying these fans!

Key features:

  • Sound-absorbing gauge steel casing
  • Rustproof powder coat epoxy finish
  • Lubricated balanced motor
  • Extended collar & lip features
  • 100% speed-controllable, built-in 120V power cord
  • 10-year warranty

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4. Tjernlund M-6 460 CFM, 6″ Inline Duct Booster Fan

Tjernlund has been around for decades, manufacturing chiefly cooling equipment and rooftop heating. It’s not that known name in the marijuana world though. Nevertheless, many cannabis growers are using M-6 six-inch inline booster fan in their grow rooms or tents. That’s because this exhaust fan for grow room offers top-of-the-line quality for small and mid-sized grow operations.

M-Series inline fans generally feature incredibly low power usage with high-pressure handling performance. Those fans produce low noise and hence are perfect for those growers searching for a super quiet exhauster to get rid of high moisture in their grow room.

The 6″ size is actually the only size Tjernlund offers for hydroponics. Despite being small in size, this fan delivers a decent power at 460 CFM. That makes it worthwhile for medium to large-sized grow rooms aside from the smaller grow-ops. With a variable speed adjuster, it can be successfully utilized for a bulky cannabis facility. Keep in mind that it mainly depends on what type of lighting source you are using.

To diminish any vibration during operation, there’s a strip of isolating foam included. Apart from reducing vibrations, this strip also ensures a better fit of the unit. All Tjernlund models from M-6 series come with a 120V power cord.

Key features:

  • Works well for high-moisture areas
  • Ideal for small to mid-sized grow rooms
  • Low power usage
  • Noiseless operation
  • Comes with a standard power cord
  • Includes mounting brackets & hardware
  • Doesn’t include speed controller

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5.Vortex 6″ 347 CFM Atmosphere Fan

This 6-inch inline fan has a stylish, sleek design. However, the design shouldn’t be the only thing to look for, but performances and key features. Delivering unparalleled performances and offering advanced technology, Vortex Atmosphere will certainly not let you down.

Being designed with max silence in mind, Atmosphere is rated the quietest inline fan on the market. It doesn’t make a noise like most inline fans which are as much noisy as air conditioners. This product has double isolated walls to cut down noise. You will be able to use this ultra-quiet fan in even the quietest grow rooms.

But the quietness is not the only advantage of this grow tent fan. A big plus of this unit is that it’s designed to combine energy efficiency, allowing users to save their money on power. The Vortex Atmosphere fan is built with dual mixed-flow impellers and a brushless AC motor. It is assembled with an integrated backdraft damper and high-impact resistant polycarbonate casings. Additionally, there is a mounting bracket intended to ease the installation process.

This item has a wattage of 66 watts and weighs 10.5 pounds. It comes with a 10-year warranty, however, neither a charcoal filter nor ducting is included. Atmosphere is a great aeration solution for small to mid-sized grow rooms. If you need a fan for a larger grow room, go for eight-inch Vortex model that moves air at 728 CFM while still being fairly quiet.

Key features:

  • Ultra-quiet operation
  • Energy efficient
  • Resistant polycarbonate casings
  • Mixed-flow dual impellers
  • AC brushless motor
  • Suitable for small to mid-sized grow rooms
  • Sleek design
  • 10-year warranty

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6. Rule 240 In-Line Marine Bilge Fan

Do not let the size of this inline blower deceive you. This small inline fan can pack a punch!

Make sure to check it out if you are looking for the silent fans with a low amp draw for small grow room. Working noiselessly while drawing low amps, this model is a good fit for smaller outlet and inlet connections. It can fit into compact spaces with ease.

The Rule 240 is surprisingly powerful for such a small unit, providing incredibly high airflow at 235 CFM. It’s guarded against moisture build-ups by means of a sealed motor shaft. Besides, it is also capable of fighting off corrosion thanks to a corrosion resistant nickel plated casing. Therefore, it is deemed to be one of the best small fans for grow rooms.

Because of its small size, it’s quite easy to install it to flat surfaces. The Rule240 is also one of the less expensive options you will find on this list, which makes it a great choice for first-time cannabis growers just starting out in a small growing space.

Key features:

  • High-volume efficient airflow
  • Low amp draw
  • Sealed motor shaft
  • Corrosion resistant nickel plated motor housing
  • Quiet operation
  • Easy to install
  • Cheap

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7. Can Fan 6″ 420 CFM Inline Fan

Can Fan is the top-of-the-line brand known for efficient and durable inline fans. All the products that come from this manufacturer are specially designed for committed weed growers requiring high-end ventilation solutions. They are made of well-designed, strong materials that are extremely reliable.

The company made a big deal with Pro Series that has taken the things to the higher level. Those fans are not only super quiet (much quieter than any previous Can Fan fan) but are more efficient than ever before. Moreover, they are very durable thanks to the upgraded housing as well as CSA and UL approved strengthened plastic compounds.

Pro Series offers a few different sizes to choose from, including 6-inch 420 CFM, 8-inch 863 CFM, as well as 16-inch 2343 CFM, each of which comes with three dspeed settings along with a 120V power cord.

The cost could be the only issue when it comes to the Pro Series products, as their price might seem a little high for some customers. But they are truly worth the money when considering high efficiency along with other features they offer. These fans pay for themselves in the long run, especially if you are growing cannabis in a large room.

Key features:

  • 3 control speeds
  • EZ Mount bracket
  • Fiberglass reinforced plastic compounds
  • Quiet operation
  • High efficiency
  • Expensive

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8. iPower 12-Inch 1060 CFM Inline Fan

iPower is another well-known brand that brings high-quality products. It offers a broad range of options for ventilation systems that come in various sizes. The all-inclusive packages are available for the 4-inch and 6-inch fan sizes, and they come with carbon charcoal filters for grow rooms as well as 8 feet of ducting. So, if you’re wondering how to set up inline fan and carbon filter inside of your grow room or tent, iPower has everything you need.

With lubricated bearings, the iPower inline fan is constructed to allow for low maintenance. It’s coated with ceramic to lessen vibration and noise. Plus, this model is equipped with composite blades that are meant to reduce vibrations during work.

The iPower fan is easy to install and is very lightweight. It comes entirely wired with strain relief, junction box, and 5ft power cord. That makes it perfect for those having ducting in lengthy tracks.

Key features:

  • Ceramic-coated
  • Composite fan blades
  • Center hub
  • 5-feet prewired UL listed power cord
  • Permanently lubricated bearings
  • Great for long duct tracks

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9. VenTech 6″ 440 CFM Inline Fan with Carbon Filter Combo

VenTech fans are built to stable and efficient with a higher-up aerodynamic frame. They boast a steel structure that is coupled with a powder-coated black paint. Although these fans are mostly used for grow tents and rooms, they have also found their application in hospitals worldwide.

This particular model is 6 inches with 440 CFM, which is pretty decent when considering its size but it’s a bit lower when compared to the similar models discussed above. However, this inline fan will benefit you on the other way. That said, it comes with a charcoal filter for grow rooms that can help you eliminate odd smells in your grow area. The vast majority of fans doesn’t include a filter, meaning you have to buy it separately.

Besides, the package includes an instructional pamphlet and mounting brackets. Since it comes with a mount, it’s fairly easy to install it. Ventech also offers a 1-year warranty to the customers.

Ventech fan is recommended for people who grow their plants in smaller spaces. It is a fantastic choice for those searching for a simple use, high standards, and easy set-up.

Key features:

  • Steel construction with powder-coated baked paint
  • Aerodynamic body
  • Comes with Virgin Charcoal Carbon Filter
  • Mounting brackets included
  • Convenient for spaces that aren’t too large
  • Easy to install

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10. Apollo Horticulture 4” 190 CFM Inline Fan

Apollo Horticulture exhaust fans for grow rooms do not only provide high quality but also offer a realistic option for cannabis growers running with a tight budget. They are built for resilience and durability above all else. That’s why those fans include a heavy-duty coating covered with powder paint to prevent rusting.

On the downside, this brand doesn’t offer plenty of options like other inline fans on this list. Nevertheless, it is a well-established brand that is highly respected in the “hydroponic world.”

There are only three models to pick from – a 4’’, 6’’, and 8’’ model. All of them come with a built-in variable speed adjuster. This lets you have control over each stage of growing. But note that they don’t include charcoal filters nor ducting.

Who should buy this fan? It is particularly suitable for those who need all-in-one multipurpose inline air fan. Also, bear in mind that these fans are intended for general ventilating usage.

Key features:

  • Built-In speed controller
  • Covered in powder paint
  • Durable steel coating
  • Includes Mounting Bracket and Instructional Pamphlet
  • Doesn’t include charcoal filters nor ducting
  • Affordable price

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What to Consider When Buying an Inline Fan

You should purchase an inline fan according to your growing medium, be it a grow room, a tent, or a dedicated grow cabinet. Go shopping with the following facts in mind.

Size of Your Grow Room

The first thing you should figure out when choosing an inline fan is the size of your grow room, i.e., the area you’re using to grow cannabis.

As a rule of thumb, you can use the following formula to determine the appropriate capacity:

Height x Length x Width (in feet) x 1.25

One may ask why the volume is multiplied by 1.25. Well, that way you will get 25% of extra room that can be useful in event of resistance from ducting and/or carbon filters. This little extra space actually presents the amount of air that your inline fan is supposed to remove every single minute. By the way, it is always better to feel comfortable than being tightly compacted.

CFM (Cubic feet per minute)

The larger fan, the more CFM (Cubic feet per minute). With that being said, you should choose an inline fan that will suit your growing space. As you could see, most inline fans range from 4 to 12 inches in size. Larger grow-ops require larger fans capable of developing more than 750 cubic feet per minute. However, it’s not worth investing in big, heavy-duty models for smaller rooms when the small 4″ and 6″ models can do the trick.

Type of Lighting

You also should consider is what type of light you’re using. That will help you determinate the right fan size for your grow room.

Some lights produce more heat, which requires more air flow to dissipate. LEDs, for example, produce less heat than HID lights. So, if you’re using LEDs in your growing area, go for a lower CFM inline fan and vice versa.

What is Included in the Package

Another useful consideration for picking the certain model is package inclusion. It’s a good idea to get familiar with what you’ll get in the package aside from the fan itself. Pre-wired cord, speed adjuster, instructional pamphlet, and mounting brackets, are some of the things that are commonly included in the package when purchasing an inline fan. This way you can avoid paying for them separately and thus save money.

Our Final Review for the Best Inline Fans

You have found out about top rated models on the market — their performances, key features, and which grow spaces they suit most. You’ve also learned what to consider when purchasing an inline fan.

Now that you know what you’re searching for, take another look at the list above and pick out an inline fan that would work best for your grow room.

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