Top 3 Best Inline Duct Fans for Grow Tents of 2022

 As more people are now growing plants at home, manufacturers strive to supply them with the equipment needed for successful harvests. Due to convenience and affordability, grow tents have become a staple for indoor plants growers in today’s market.

While grow tent kits come with detailed instructions for assembly, you are still left to make critical decisions about where to situate them in your home. When trying to figure out grow tent placement, your primary considerations should be ease of use, garden security, and tent exhaust options.

Especially for novice cultivators, it can be really challenging to figure out where to vent your grow tent. While manufacturers have developed amazing equipment to be used inside tents, there is not much information available on situating your exhaust outside of the setup. As such, we wanted to walk you through some convenient and discreet ways to vent your grow tent.

Why is My Indoor Grow Tent So Hot?

Having a ventilation system set up isn’t the end of the line when it comes to keeping your grow space cool. If not set up properly, your space could still overheat due to transpiration or from the heat emitted from the equipment you’re using.

Transpiration is the cycle your plant takes while it grows. As the temperature in the space rises, your plants will take more water and nutrients from the soil. This will then move through the plant’s stems, branches and leaves, eventually being transpired back out. The transpired water then evaporates into the atmosphere and increases the humidity in the space. And the cycle starts all over again.

Grow lights can also contribute to the temperature of your grow space. Bulbs can get incredibly hot and can impact your plant’s ability to grow.

The good news is, both of these issues can be resolved with the help of proper ventilation.

What Temperature Should be Growing Space be?

There is a little leeway when it comes to the optimum temperature for your plants. As a general rule of thumb, your plants will thrive in an environment that is between 21–24 degrees Celsius. Even then, it’s only when the room becomes a stuff 29 degrees that serious issues begin to occur. If you’re using a C02 supplementation, these temperatures will vary.

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

Features:

This ECO Farm inline duct fan features a powerful blower with a fan speed of 2550 RPM and an airflow of 390 CFM. Move air efficiently through your target location for optimal ventilation. The in-line ducted fan has a one-year warranty, high working efficiency, shock resistance and stability, and low energy consumption to achieve a perfect sense of use and optimal airflow. Greenhouse ventilation fans are very suitable for controlling the growth of tents, hydroponic plants, high temperature and high humidity indoor garages and other confined spaces, air circulation, odor removal, and keeping indoor air fresh. The 6 inch duct fan has a removable and fixed locking steel buckle for quick removal and easy maintenance. Fans can be installed in a straight line or at any angle in the ductwork. The installation box can be rotated and installed at will, which is convenient for installation and connection.

HURRICANE Inline Duct Fan for Grow Room

Features:

With a diameter of 10 inches and a power rating of 780 CFM, this is another product that is ideal for large-scale applications. This is ideal if you are a commercial grower, not a hobbyist. In-line fans are made of powder-coated steel. With this, you can be sure that it will be impressive in terms of durability. Mounting brackets and comprehensive instructions are already included in the kit. With the latter, installation can be done in minutes. Finally, the manufacturer offers a five-year warranty, which should already reassure you that the quality will be hard to beat.

SunStream Inline Duct Fan Vent Blower

Features:

This in-line ducted fan is versatile and can be used for exhaust, supply air and room temperature control, and can be installed anywhere in the ductwork at any angle. Galvanized steel enclosures and components provide enhanced rust resistance and are ideal for a variety of commercial code and residential applications. Precisely assembled fan motor and blades eliminate rattle and extend life, and it is capable of operating in airflow temperatures up to 176°F/80°C. Fan motor bearing sealed, self-lubricating, maintenance-free life. Fan speed can be controlled by reducing the voltage using the speed controller.

Things to look for before buying Inline Duct Fan

There are many fans from different brands. But does every one of them fit your choice? Certainly not. So, there are few things you should consider before getting a fan for your grow tent. Let’s look at the fundamental points you should take out on an inline duct fan.

Size
The first thing you need to look at the size of your grow tent. If you are growing plants in a small space, getting a bigger fan is unnecessary. Besides, if you take a big fan that you don’t need, it could lead your growing plants to death. The best way to take an approximate measure is the area of the tent.

For example, if you have a tent that is 10 square feet in the area, the best fan would be 10′” inches in diameter. If your tent is about 5 square feet, then the best choice is a 5″ inches diameter fan.

Airflow Rate
Airflow rate is measured in CFM (Cubic Feet minute) in fans. You have to understand that you can’t use the same volume area to measure the power of any inline duct fan. You have to take the maximum number of CFM according to your fan size.

Suppose you use a huge fan in a small tent. That is a totally wrong calculation. You have to take a small fan for a small tent and a bigger fan for a more giant tent reminding the best CFM in the fan. A better airflow rate means a better fan.

Speed Adjustment
It is one of the features you should look into an inline duct fan. Sometimes you need to increase the airflow and sometimes decrease it. It depends on the weather outside the tent. So, Having a speed adjustable fan is a great way to go. At least having two speed settings in a duct inline fan is a plus.

Build Materials
We want a long time service from any product we buy. An inline duct fan is no different. The performance of the fan also highly depends on the build quality. The stronger the casing, the more influential the motor you will get. And the fan won’t shake the structure while running.

You should probably go for steel fans because steel is more durable and stays in good share for more time. Also, there are some fans with ABS plastics and steel fusion. Those are pretty good too. However, don’t go for a low-end plastic build inline duct fan. That won’t even survive for months after heavy airflow.

Noise
Accept it; noise is uncompromisable. Any fan, large or small, will have noise. But new inline fans are trying to reduce noise as much as they can. Companies claim their fan is silent, but it’s not possible to make a fan totally silent.

But when you stand aside by an inline fan, you will understand why noise reduction is necessary. The fan can make intolerable noise if you don’t want to get complaints from neighbors. Don’t want to get caught in a plants-growing restricted area, then take a less noisy fan.

Oscillation
Change in air direction can be a great asset. It’s not likely to have all the plants in the center of the tent. So, getting air into every corner is an excellent benefit. The old way to aerate every corner is by using multiple duct fans in the same tent.

To avoid complex structure and reduce the cost, a fan capable of oscillation is preferable. Always go for something that can automatically circulate air in different directions without any manual effort. Inbuilt oscillation is an asset, but if mounting is possible, it is also fair.

Power Source
When in the tent, plants need a controlled environment to grow. And if the fan is not working for a long time, then there could be a humidity build in the tent. That will make the plants dull. So keeping the fan always active will need a suitable power source.

There is mainly a Wired, USB powered, and battery powered fan available now. The battery is good for backup when there is a power failure. But if the battery is damaged anyhow, then the whole system is blocked. So, it is not the best of choices.

Wire power duct fan is still the most recommended. Because you can’t notice when the battery is dead and also the air ventilation system. Yet a long wired USB fan is also preferable because you can use it with USB capable Battery source.

Warranty
You would want your fan to serve for a long time. But what if the product is defective? To ensure you get the value of the money you spend, choose something with a warranty. By this, you will keep calm and work on your grow tent with any duct inline fan.

Conclusion

We’ve shared our picks for the top inline fans for any type of grow — whether you’re a hobbyist with a few plants or a commercial cultivar with multiple zones.

No matter which you choose, you’ll be getting a premium fan that delivers everything it promises. These are packed full of value, and you can’t go wrong with any of these.

Just be sure it fits your space — using the sizing recommendations we outlined earlier. If you have questions, our experts are awaiting your call or email — we’re happy to help!

While you’re here, grab whatever else you need to bring your plants from seed to harvest — whether you’re growing indoors or outdoors, hydroponics or soil.