Air circulation is an essential thing you need to mind about your grow tent. If there is no good air circulation, you might easily begin losing some of the plants. And this shouldn’t be allowed to happen.

With grow tent fans, you will easily achieve this goal. Specifically, the inline fans do a great job.

What’s the purpose of a grow tent fan?
Grow tent fans act as ventilators for the grow tent. These fans help in balancing the temperature inside the tent. The growth of certain plants inhibits under extremely high or low temperatures during artificial growth procedures. This is why grow tent fans are a much-needed accessory for hydroponic growth.

Inline fans are usually classified with respect to the installed motor. The models you will find in the market use the following types of motors: axial, centrifugal, and mixed flow.

• Axial Inline Fan

This is one of the most common forms of inline fan used in grow rooms. A short length of the rigid round duct at least the same diameter as the fan outlet is suitable.

This type of inline fans are suitable for high extractor fan but at low pressure. They may not be ideal for long duct length.

An inline axial fan should be installed with the shortest possible duct length to the discharge terminal. You should always refer to the manufacturer’s manual.

• Centrifugal Inline Fan

Unlike axial inline fans, centrifugal inline fans are engineered to create greater pressure, allowing you to use longer lengths of ducting.

This type of fans can be installed in more than one way, including vertical and horizontal installation.

Centrifugal inline fans are made of durable construction, and their compact design provides you with an exceptional alternative to ordinary blowers.

• Mixed Flow Inline Fans

Mixed flow inline fans can fill the gap between the axial and centrifugal inline fans, balancing the best of both worlds. They’re basically hybrids with mixed characteristics.

Mixed flow units have unique designs that consume less power to achieve the same performance.

The inclined shroud cover of mixed flow inline fans can direct as well as guide airflow direction into the wheel efficiently. This helps to increase pressure while reducing power consumption.

Unlike ordinary inline fans, mixed flow models can compromise between power consumption, air pressure, and noise.

Most mixed flow designs have unique hemispherical back plates that allow for smoother wheel air intake fan in order to reduce turbulence.

Most high-performance units have a precisely connected cover and inlet bell that help to minimize leakage and backflow caused by pressure difference.

Usually, velocity and cubic feet per minute are used to determine the duct size. All inline fans are rated for a particular duct size, such as 4-inch or 6-inch.

The duct is always sized to the inlet of the fan. Therefore, over-sizing or under-sizing the duct will certainly interfere with the performance of your proper ventilation system.

There are different sized fans for different growing areas, depending on your total cubic feet.

To calculate the cubic feet of your grow room multiply the length by the width, and the height of your grow area.

For example, a grow room that measures four by two by five feet has a capacity of 40 cubic feet. A growing area of this size will need an inline fan that can pull 40 cubic feet of air per minute.

This grow room needs a 4-inch inline duct fan because it can pull up to one hundred and ninety cubic feet of air per minute.

Choosing the right size inline fan is important if you want to optimize your grow space.

You want to invest in a unit that will serve your grow room long-term. As such, you should choose a fan with durable construction.

Choose a unit with a well-balanced construction that can effectively minimize vibrations. It should contain no wearing components.

For superior duct connection, we advise you to choose a unit that has a rubber gasket, which not only helps with eliminating vibration but also dampens sound.

Don’t just choose a durable construction. Also, make sure it is easy to install. The unit you select must come complete with mounting hardware.

Unlocking the mounting bracket should not be hard. Installing the ducting system on the mounting bracket should be simple.

Make sure the fan and ductwork combination allow the same amount of airflow inside your grow tent like the one flowing outside.

If not, you are running the risk of burning out your fan motor from stress. This can potentially change the shape of your grow tent, decreasing the growing area.

Top 5 Best Silent Grow Tent Fans Recommend FOR you

ECO Farm IN-LINE FANS

POWERFUL AIR FLOW: Heavy hitting blower, moves air through your target location efficiently for optimal ventilation.
RUNS SMOOTH AND QUIET: Powerful fan puts out only 60 dB noise level.
DURABLE BUILD: Galvanized steel parts come factory painted to resist atmospheric corrosion from humidity. Tight, precise construction eliminates rattling and reduces wear and tear to give the element a long life.
HIGH TECH DESIGN: The aerodynamically designed centrifugal impeller of this unit delivers strong air flow with a disproportionately low sound profile.
VERSATILE APPLICATIONS: Ideal for cooling lighting fixtures or controlling hot and humid conditions in grow tents/rooms.

iPower Inline Duct Ventilation Fan for Grow Tent

• 442 CFM; Noise level: <65Db; 110/120V standard household plug; pre-wired 5 feet power cord
• Quality components for quiet operation. Composite Fan blades and center hub which reduces noise and vibration
• Durable ceramic-coated. Permanently lubricated bearing that requires zero maintenance
• Remove heat from the system to solves air delivery problems without major system rework or expense. Suitable for industrial, household and horticulture ventilation applications for air clean and temperature control
• Max Ambient temperature: 176℉/ 80℃

Apollo Horticulture 4/6/8 Inch Inline Duct Fan

Apollo Horticulture inline fans are cost efficient and high quality. Designed for resilience, these fans include a durable steel coating covered in powder paint, to resist rust.

Apollo offers slightly less variety than other manufacturers, with only 3 models. These include a 4 inch model with 190 CFM, a 6 inch 440 CFM, and an 8’ inch 740 CFM
This fan also includes a built in speed adjuster. This eliminates the need to have to buy one separately. A speed adjuster gives you complete control for all of your growing needs. This fan is intended for the gardener who wants an all in one product.

HURRICANE Inline Duct Fan for Grow Room

● Commercial grade, high performance fans
● Made of steel with a durable powder coated finish
● Made with quality UL components for quiet operation
● Easily installs in minutes
● Fan come with an 8 ft 120 volt power cord

Secret Jardin Monkey Fan

The proportion of this fan is about 6 inches (ca. 15 cm) and it has the power of almost 16-Watt.

The engine is composed of 100% copper and no alloys. This fan can be attached to a pole inside the grow tent so it can easily be adjusted in the direction you want the airflow to be directed at.

The fan weighs around 2 pounds (0.91 kg) and this is not an oscillating fan. If you want an oscillating fan you can check out the best oscillating fans for grow rooms that we have mentioned above.

Final thoughts

Grow tents have become very popular method of indoor plant propagation. You can grow your favorite vegetables and flowers right at your doorstep. A fan is needed to provide the best temperatures for the plants inside the tent. Different fans are best suited for such applications. Grow tent fans keep the temperatures at favorably low levels, for the plants to thrive. The whole essence of having a grow tent is to be able to provide the ideal plant growth conditions. Having the best grow tent fan will ensure the plants blossom in the best manner possible.