Looking for the best fan for your grow tent? Here are all the best options on the market, the pros and cons, and what to consider when buying.

If you decide to grow a variety of fruits and vegetables at home and set up a grow tent, then you need to make sure that you have an oscillation system that can provide the plants with fresh air for healthy growth, as well as guarantee better results when the plants are grown.

However, a quick search will reveal thousands of results that can be overwhelming, especially if you’re not sure which one is best for your space, which is why we’ve rounded up the top grow tents Fans.

What Roles Do Fans Play In Ventilation?

Fans do play the most important role in the whole ventilation system of your grow room- no denial on that. Before you decide the on-off cycle of the fans, it’s important to keep their functions in mind.

So let’s have a glimpse at what it does for the whole system-

A) To Keep Plants Breathing
Plants respire by inhaling the CO2 around the leaves and grow through the process of photosynthesis. Additionally, the process is continuous on both nights and days.

In ideal growing environments, plants use up the CO2 surrounding their leaves every 20 or 30 minutes. So, you need to keep the airflow going to let the plants breathe. And fans are the only tool in rescue.

B) Keeping The Temperature Comfortable
Fans keep the air flowing, and that keeps the temperature under control. Lack of regular air exchange through fans will increase the temperature inside, which would be even worse due to the radiant heat from the lights(even when they are off).

C) Maintain the Correct Humidity Level
Too much humidity brings on unexpected pathogens to take hold. And what’s the most frequent reason for such a rise in humidity? Poor airflow- you guessed it right! So fans are, once again, the tool you have to rely on to keep humidity levels under control.

Check Our Recent Buying Guide about Grow Room Fan Size Calculator with Size-wise CFM

D) To Keep The Odor Under Control
Another secondary but important thing fans(especially exhausts) do is to keep the odor under control. But, again, if you’ve been growing for quite some time, you might be well aware of its importance.

ECO Farm 6 Inch Clip Oscillating Fan Fit for Grow Tent with 3-Speed Control

Features:

This ECO Farm wall fan is ideal for a small grow tent, which is why it is our top pick. When it comes to changing the air in and out of your grow operation, you don’t need something blowing with gusto. While this product isn’t made specifically for growing, if you just need something to keep things moving, this fan is wonderful for that. It is small, so it fits easily in your growing area, and if you are growing a large amount of product, you can buy several of these fans and they won’t get in the way or cost you a fortune. This model has a versatile mounting system, so you won’t have to fuss too much with where you put it in your tent. There is also a clamp, so you could just clamp it onto the container that your plants are in. Not only is this fan small and flexible, but it is also quiet, which is crucial for your peace of mind.

AC Infinity Cloudray A6 Circulation EC Fan

Features:

The newly designed next-generation clip-on fan provides precise air circulation for all stages of plant growth. Utilize the cutting-edge EC motor with PWM control to access a wide range of fan speeds, from breeze to powerful airflow. Designed with an EC motor to provide precise air circulation for all stages of plant growth. Numerous 10 speeds, from gentle breeze for seedlings to strong airflow for flowering. The IP-44 rating is designed for use in growing environments and resists high humidity and heat.

Secret Jardin Monkey Fan 16W 7.5'’

Features:

Secret Jardin Monkey Fans are great for airflow and are resistant to the humid environment your grow room provides. This pole-mounted fan is designed for grow tents and rooms, making this clip-on fan ideal for moving air without taking up the space you need. The fan blades are surrounded by a metal grid that’s too small to reach with fingers. This Monkey Fan is designed for tents with pole lengths of 0.63–0.83 inches as well as PVC (commonly used to stretch lattice on canopies).

How to choose the right size fan for your grow

There are grow rooms of various sizes, each requiring a different amount of airflow for ventilation.

Exchanging the stale air inside with fresh air from outside the growing space is essential for optimal plant growth. This number is measured in CFM, or cubic feet per minute. Therefore, most units sold should clearly state what CFM they are designed to flow.

To find the amount of airflow your grow space needs, first find its volume in cubic feet. Multiply its length by its width and height. This will equal the volume of your grow space, and the required airflow will be equal to this number (in cubic feet per minute, or CFM).

Adding components such as ducting and carbon filters will reduce fan performance in your grow space, affecting the fan size you need.

In the case of ducting, the number and sharpness of its bends affects airflow resistance. This is because airflow reduces the farther it has to travel, so the straighter the pipe, the better.

The sharper the bend, the more efficiency drops; a 30° bend reduces airflow by 20%, while a 90° bend reduces airflow by 60%! Smoothing out any creases will also improve fan performance and airflow.

Conclusion

We hope you found your new grow tent fan on our list of traditional and inline fans! All the fans we see today are of good quality, but we recommend tower fans and inline fans for exhausting used air in tents.