2023 Best Inline Duct Fans For Grow Tents - What Are The Best?

When growing indoors, ventilation in the grow room is very important. Because most grow rooms or tents are enclosed and cramped for space, without the proper inline fans your grow area can overheat, killing your plants.

Below is our current selection of inline fans, along with some great information on how to choose the best size for your grow room or tent

How Many Fans Do You Need For Your Grow Tent?

The answer to that question depends on a few factors, including the size of your grow tent, the type of plants you’re growing, and the climate you live in. We’ll explain everything you need to know about choosing the right number of fans for your grow tent.

1. Grow Room Size Matters
The size of the tent itself is the first thing you need to consider when choosing how many fans to use in your grow tent. One fan should be sufficient if you have a small grow tent (2′ x 2′ or 3′ x 3′). However, you’ll need two fans if you have a larger grow tent (4′ x 4′ or 5′ x 5′). The reason for this is simple: more air needs to circulate in a larger space.

2. Two Types Of Fans
Two types of fans are commonly used in grow tents: exhaust fans and intake fans. As their names suggest, exhaust fans remove hot air and excess moisture from the grow tent, while intake fans bring fresh air into the tent. It’s important to use both types of fans in your grow tent; otherwise, you run the risk of creating an unhealthy environment for your plants. You should have one exhaust fan and one intake fan if you have a 4′ x 4′ grow tent.

3. Climate Considerations
Finally, it’s essential to consider the climate you live in when choosing how many fans to use in your grow tent. If you live in an area with high humidity levels, you may need more exhaust fans than usual to keep the air inside your grow tent dry. Conversely, you may not need as many exhaust fans if you live in an area with low humidity. The same goes for intake fans; if it’s cold where you live, you may need more intake fans to keep the air inside your grow room warm enough for your plants.

ECO Farm 6 Inch In-line Fan Exhaust and Intake Fan for Grow Room

Features:

The ECO Farm inline fan has a heavy-hitting blower with a fan speed of 2550 RPM for an airflow of 390 CFM. Moves air through your target location efficiently for optimal ventilation. A powerful fan puts out only 50 dB noise level. Tight, precise construction eliminates rattling and reduces wear and tear to give the element a long life. The aerodynamically designed centrifugal impeller of this unit delivers strong airflow with a disproportionately low sound profile. Ideal for cooling lighting fixtures or controlling hot and humid conditions in grow tents/rooms.

HURRICANE Inline Duct Fan for Grow Room

Features:

The Hurricane Inline fan is undoubtedly the best inline fan for large grow tents and rooms. For an inline fan that has a CFM rating of about 1060, it’s definitely more than enough for most of the large-sized grow tents on the market. Its build quality is appreciable, no doubt, as it is made with a combination of high-quality materials. The fan is made from steel and dons a finish that looks like a powder-coated finish. This fan is available in different sizes ranging from 4-inches all the way to 12-inches. Similarly, the CFM rating of the respective fans increases from 171 all the way to 1060. This Hurricane inline fan lacks controls of its own — you can’t control the speed and the climate.

Can-Fan Max Fan Pro 6" Mixed Flow Inline Fan 420 CFM

Features:

The Max-Fan® Pro Series is even more efficient and stronger than the original Max-Fan® design. The Max-Fan® Pro Series has a much more robust housing due to the fiberglass reinforced plastic compounds that meet all of the UL and CSA requirements. The fans have three control speeds for true performance. These fans run quieter than the Max-Fan®. The fans come with the EZ Mount™ bracket for easy mounting.

How Can You Choose the Best Inline Fans?

Here are the factors to look for when buying any inline fan:

1) Fan Size
The diameter of their opening measures inline fans. The smallest diameter fan you can get is 4 inches. From there, different fan sizes go up 2 inches at a time.

On this list, we mainly focus on the 6-inch inline fans and 4-inch inline fans, as those are the most common.

How do you know which size to get for your grow rooms?

First, you must know how many cubic feet your grow rooms occupy. Inline fans measure their output by CFM rating or cubic feet of air per minute.

Ideally, the air in grow rooms should be changed out at least 30 times per hour or, if it can be afforded, 60 times per hour.

So, let’s say the cubic feet area of your grow tent is 175, then an inline fan with a 90 to 175 CFM rating would be perfect for you!

However, choosing the right size is not enough. To maximize efficiency, you also need to ensure that there are no big bends in your ducting and that you install it at an ideal place.

Inline duct fans should be placed at the farthest wall or window from the main source of air replacement and nearest to places where moisture, steam, or mold is most likely to accumulate.

2) Noise
Larger inline fans are much louder than small ones, so keep this in mind if you’re considering buying an 8-inch inline fan instead of a 6-inch one.

The more high-end inline duct fans are usually quieter, even the big ones.

To test the level of noise you are comfortable living with, the best way to test this is to go to a store and hear it work. There’s no shortcut for this.

However, there are ways to reduce the already existing noise. If you hang your inline duct fan from the ceiling, the sound will be much quieter when it reaches your ears.

You could also purchase an inline fan muffler or a solid-state speed controller to keep the fan from working at its maximum RPM when not needed.

You can also use either insulated or rigid ducting or make use of an insulated fan box.

3) Quality and Durability
Of course, you want to get your money’s worth when buying an inline fan, especially if it’s expensive.

Inline fans must work all the time for your plants and the rest of your grow tent to maintain their top condition.

You can’t have an inline fan that suddenly stops working when you’re in a growing cycle, or your plants will suffer from heat and humidity.

So whatever fan you choose should be able to keep up with those demands.

To get a durable fan, make sure the parts are made of high-quality materials, the build quality is good, and there are good reviews from those who have had the same brand and model for years!

Conclusion

Whether you’re growing in a tent, shed or commercial warehouse, we have the inline duct fans you need to help you grow your best crop yet, keep energy costs low and give you peace of mind. But even if you’re not growing anything — you just need a reliable fan for your home or commercial building — our range of products will give you the results you deserve.

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