Not all fans are created equal, which is why it’s important to understand the different types of fans and their uses before buying fans for your grow room. There are several different types of fans commonly used in grow rooms, each with their own advantages and disadvantages.

In this blog post, we’ll discuss the most common types of fans and their common use in a growroom setting. So if you’re looking for a fan for your garden and you’re not sure where to start, read on!

What is an inline fan?

Inline fans are a great way to improve air circulation in your grow room and avoid the problems mentioned above. An inline fan is a ventilation system that helps improve the air quality of your grow room by drawing in fresh air from the outside and expelling contaminated air to the outside.

An inline fan is simply a fan installed in a ductwork. This means they can push air through your ducts, which is essential for keeping your growing room temperature and humidity at the right level for optimal growth.

The grow room needs to be well ventilated to keep the plants healthy. Inline fans are a great way to achieve both goals. Inline ducted fans are available in a variety of sizes and can be powered by electric motors or belt drives.

ECO Farm 12'’ MAX Inline Fan

Features:

This ECO Farm inline duct fan is used in indoor grow facilities and vertical farms, heating and cooling transfer, commercial drying and air filtration applications. Inline blowers can also create a negative pressure environment, simulate wind, exhaust odors and fumes, and draw in fresh air from outside. The blower provides an airflow rate of 2120 CFM using 550 watts at maximum speed. The fans don’t “purge” at lower speeds or waste power. The fans give you unique control flexibility without background noise or hum at low speeds. Coated steel housing prevents rust and protects the motor and blade from accidental damage and harsh elements to reduce maintenance in demanding applications.

JETFAN Mixed-Flow Digital Fan

Features:

Controlled by a 32-bit microprocessor, these powerful mixed-flow digital fans deliver outstanding performance and value. Available in 4", 6", 8" and 10" models, Jetfans is the ideal solution for your ventilation needs. Because the motors in these fans are EC (electronically controlled), they offer very high efficiency, reliability and controllability. They include a highly precise speed control unit that can be detached from the fan and power cord if desired. Low power consumption — Jetfans run only 25% of the power of comparable inline fans Their EC motors are efficient, reliable and responsive to speed control ETL certified

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 to Choose the Correct Sized Fan for Your Grow

There are various sizes of grow rooms, each requiring a different amount of airflow to ventilate them.

Exchanging stale air inside with fresh air from the outside of your grow space is vital for optimal plant growth. This figure is measured in CFM or cubic feet per minute. Therefore most devices sold should specifically state how many CFM they are designed to flow.

To find the amount of airflow needed for your grow space, first find its volume in cubic feet. Multiply its length by its width and height. This will equal your grow space’s volume, with the required airflow equal to this figure in cubic feet per minute, or CFM.

Adding components like ducting and carbon filters will reduce fan performance in your grow space which affects the fan size you need.

When it comes to ducting, the number and sharpness of its bends factor into the airflow resistance. This is because airflow reduces the further it must travel so the straighter the ducting route the better.

The sharper the bend, the harsher the efficiency reduction; a 30° bend cuts the amount of airflow by 20% while a 90° bend diminishes airflow by 60%! Smoothing out any wrinkles can also improve fan performance and airflow.

Conclusion

Keeping your growing environment cool enough to maximize growth and yield can be the biggest headache for growers. Of course, there are many things you can do, but they all take time, effort, and money.

You just need to consider it an essential part of indoor growing. Accept that you will have to buy fans, ducts, filters, and maybe an air conditioning unit. Ideally, you should also buy LED grow lights rather than outdated HPS or MH lights (we still recommend CMH, although we prefer good quality LEDs).