How to Install Inline Duct Fan in Grow Tent

Owning an indoor grow tent could be one of the best ways to start gardening or a DIY agriculture project. There are various crucial factors you have to consider, to ensure your grow room functions optimally. For instance, the quality of air plays a significant role in the overall growth levels of your plants. Thus, understanding how to install inline duct fan in grow tent is among some of the crucial factors to consider. 

When it comes to indoor gardening, you will have to regulate the flow of air artificially. First, you will have to require sufficient airflow, to help promote the growth of your plants. It will maintain control temperatures and remove bad odours from the grow room.

Even more, it will help in clearing the air. Thus, installing inline ducts will be important for this process. As such, your plants will grow healthy and strong.

Installing an Inline Duct Fan in A Grow Tent

While installing an inline duct fan might seem like a challenging process, it’s simple, and you can do it DIY. You will just have to understand a few key aspects relating to the process.

The most crucial factor to consider is that the ducts should not have any bends, to ensure optimal flow of air.

Here are some pointers to help you install the duct fan correctly:

Mount Your Inline Fan on the Tent Ceiling Bars

Once you have the tent in place, the next step is to hang the inline fan. Usually, attaching the fan to the grow tent ceiling bar is the most recommended approach.

Thus, consider using adjustable clips to help you hang the fan, and let it dangle a few inches from the ceiling. It’s a process that will ensure you have adequate space on the ground, and also help to eliminate hot air from the upper section of the tent.

Hang the Carbon Filter

Installing the ventilation on your grow tent might be the most challenging process when it comes to setting up a grow tent. The most crucial aspect of this process is to ensure you install the carbon filter correctly. You may have to decide to fit inside or outside the tent. More so, you can hang it or decide to place it in a safe location on the floor.

The most recommended connection would be to attach the filter indoor in the tent.

Once you attach the fan, ensure the tapered end faces the exhaust hole. Then, use the remaining available straps to hang the carbon filter. Ensure that the flange end of the filter is facing the filter directly. Secure either end of the duct to the fun, buy using clips. The fit the other section to the carbon filter. For filters that you will place on the flow, you may have to consider a different approach.

Connect the Fan to the Ducting

Connect the Fan to the Ducting​

Hanging your inline fan may not be useful if you fail to connect it correctly to the ducting system. For this reason, ensure you connect the ducting properly, such that it promotes the free movement of exhaust gases. Also, the piping should be flawless and should not have any bends, which might lead to perforations. More so, the ducting should not be long because the length may compromise the efficiency of the fan.

 Remember to practice caution such that the ducting won’t send light to the grow tent, which is supposed to be light proof. If you don’t want light penetrating through to your garden, then consider making a u-bed to help eliminate this issue.

Remember to ensure the ducting runs through an exhaust hole. Furthermore, ensure that you seal the tent off, especially where the ducting exits from the structure. If you leave it unattended, this can be an entry point for pests and more.

Connect the Power Cords

Once you install the above components correctly, the last but essential aspect relates to the power connection. When connecting the fan to an electric source, ensure that you practice optimal safety.

You should confirm that you have all components connected correctly for the best results.

When it comes to electrical connections, you are advised to go for a qualified electrician to help with the process. An expert is best because they have an understanding of the safety measures required to install it correctly. For instance, ensure that you connect the fan to the correct power outlet, to avoid issues such as surges.

Inline Duct Fan Set Up in Grow Tent Frequently Asked Questions (FAQ)

Q. Do I need a fan in my grow tent?

A. Yes, your tent needs a fan to help regulate the air conditions in the shelter. The plants in the grow tent also require specific humidity and temperature levels for optimal growth. A fan in a grow tent will provide optimal circulation, and you will find it easy to adjust temperatures to suit your needs.

Q. How long do I keep a fan in my grow room?

A. It all depends on the internal conditions of the grow room. You can always turn off the temperature and humidity when you feel they have surpassed the recommended levels. Later on, you also have the option of running the fan on and off, at specific times. For instance, you can run the fans in 10-minute intervals every 1 hour.

Q. Why do I need a fan in my grow room?

A. A fan plays a significant role in regulating air quality. Plants are living things, and they also need clean air for growth and more. Unlike a traditional farm, a grow room needs artificial resources to control the quality of air. Remember that the quality of air is directly proportional to the yield you will get from the grow room.

Q. How often can I run the exhaust fan in a grow tent?

A. The standard recommendation is to run the fan in specific intervals, to help save energy and to maintain optimal air quality. You can improve the exhaust time by refreshing the air for at least a third of the time. For the best output, consider going for the best grow tent exhaust fan for your needs.scing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Q. How do I install a duct fan in the grow tent?

A. Usually, components such as insulated and heavy-duty ducts play a significant role in this process. Aspects such as the length and size play a major role in efficiency. A good recommendation is to ensure the duct is short as possible. Such a unique length helps reduce the distance air has to travel before leaving the garden.

Q. What size extractor fan do I need for a grow tent?

A. The ideal fan for your grow tent depends on various factors. For instance, the size of the grow room and the number of plants are vital factors.

Q. What is the size intake fan for a grow room?

The standard measure required for inline fans is 1 CFM per square foot of space you have in the room. You can determine the size of your room by multiplying the length by width. This should help you have an understanding of the size you have and the intake fan, which will be suitable for the same.

How Does an Inline Fan Work?

Inline Exhaust Fan – The Basics

An inline exhaust fan is best described as a fan which you install to an inline for extracting waste. More so, the fan is typically installed at a location which will provide optimal air filtration benefits. Various factors come into play in the efficiency of the fan. For instance, the distance of the ducting where the air passes through will determine the capacity of the fun. Also, the power rating of the motor and size of your grow room also comes into play.

Benefits of Using an Inline Fan In Grow Tent

Reduced noise – as you will install the fan at a strategic location, the noise levels within the room you will be purifying will be minimal. Also, if you have a well-insulated roof space, or if you prefer a silent model, then you will benefit from the quiet fans. 

Length of duct run – inline fans are designed to work with ducting. This means that they can retain a large amount of the indicated capacities, as when compared to basic fans. Such a feature is useful if the distance from the extraction point to the outlet is large. For instance, if you want to extract unpurified air from a grow tent, the length should be as short as possible. Thus, this will help improve the ability of the fan to produce clean air. 

Several intake points – with an inline fan, it’s easy to make several inlet or outlets by using DIY techniques. Such a feature is beneficial when you have a large grow room, and you want to have several intake points.

Components for Creating an Inline System

  • Intake vent – the system requires an internal vent, which serves as the point of extraction for the system. Usually, these vents and grills are available in many shapes, sizes and colours to suit specific aspects of a grow room. It’s good to go for a short vent, to help reduce the distance air has to travel. 
  • Ducting – you may need ductwork to connect the vent to the motor, and then connect the motor to an external vent. There are many types of ducting, and the best examples for grow rooms are the flexible types. There are many other types, including semi-rigid and insulated ducting. 
  • Fan – a fan is the central aspect of a grow tent system, and your choice of the fan depends on various factors. These include the size of the room and the specific applications of the fan.
  • Exhaust fan calculator – use this to calculate the extraction level required for the system. It’s good to have a fan with a similar diameter length to the ducting that you use. Remember that a fan is only suitable to use with a specific diameter of ducting. By reducing the length of the fan, you will reduce the amount of work the fan has to perform to purify the air.
  • External vent – This is the last aspect of the system, and it can be an external wall vent or a vent which is mounted on the roof. There are many options available in this category. 
  • Extras – you can also install a backdraft shutter along with the ductwork, to help prevent issues such as backflow of air. More so, this will also help keep the system closed when the fan is not in use. To keep everything in place, using a duct tape should suffice. That said, consider using work claps for the process. 

Note: A grow room ventilation is a system that ensures a continuous flow of air between the outside world and the indoor grow area. It also includes some mechanism for keeping airflow inside the grow room.

How Does A Ventilation System Affect Plants?

The main goal of a grow room is to provide plants with the ideal growing environment, as when compared to what is available outdoors. Thus, this means also providing a fresh supply of air rich with C02.

A ventilation system helps to maintain the CO2 levels in the grow room at optimal levels for plant development. As the concentration of CO2 in the air becomes low, a constant flow of fresh air from outdoors is required.

Plants are used to growing in the weather outdoors, where they are exposed to elements and wind. When they don’t have these conditions, their growth can be compromised in many ways. Below is some information to learn why these systems are crucial for plant growth:

ventilation affect plant growth

How to install an exhaust fan in a grow tent?

Determine Ventilation Setup

During this step, it’s time to get the grow tent ventilation setup. It’s the point where most have a challenge, but it’s a simple procedure. There are many grow tent ventilation setups you can consider. That said, the recommended approach is to hang the fan and filter inside the tent. If you have the small to mid-sized carbon filters, this is the best approach.

It helps maximize your growing footprint and draws air through the filter. Such a design allows the air to move slower, and also improves the effectiveness of odour control. At the same time, it’s an approach which helps in the removal of hot air from the top section of the tent. 

If you have a carbon filter which is too large to hang from the ceiling, then place it on the floor inside the tent. This is not ideal because the filter may draw more warm air down and direct it to the plants when still in operation. More so, it may also take up valuable floor space. In some cases, however, placing the filter on the floor is the ideal option. 

Placing the filter and fan outside the tent is not recommended. While this approach helps save space, it has several drawbacks. For instance, it may push the air through the filter at high velocities, and this might reduce the effectiveness of odour control. More so, it may also increase the noise produced by the fan, because of the ventilation setup if found outside the tent.

It’s an approach which is only suitable for use with the massive carbon filters, or when cant place the filter on the floor. Before you start, ensure you have adequate information on the grow room atmosphere and ventilation aspects. 

Some steps involved in installing a carbon scrubber and ventilation fan include:

  • Attach the inline fan to one of the new ceiling bars in your grow room. Consider using adjustable rope clip handles, which work well to hang fans from ceilings.
  • Either place the inline fan over to fit directly in the exhaust hole, or conveniently connect the inline fan to your ducting. You can run the inline fun through and out through an exhaust hole for optimal convenience. 
  • Hang the carbon scrubber – usually, it should be available with convenient ropes for ease of installation
  • Attach the carbon scrubber to the inline fan, such that fan draws air through the scrubber. Consider using ducting or just connect them if they have the same size.
  • Confirm that your components are of the correct size, and place them in order. The outside air will be passively pulled in through the bottom intake ports, and up through to the filter. Such a unique approach then helps to move the air through the inline fan, and out through the exhaust holes.


The success of your grow boils down to the small details. If you want the best yield, you will have to become an informed grower. In this guide, we have identified how to install inline duct fan in grow tent. When you can perform this procedure correctly, you will find it easy to maintain the quality of air for your plants. An inline duct fan makes it easy to purify the air, and you can boost its performance by using a carbon filter. 

Remember that the quality of is just one of the critical factors required for optimal growth. You also have to consider the other remaining factors, and ensure that you “boil down to the small details.” This way, you are sure of the best yield from your grow room.

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