20 Best Fan For Grow Tent – Inline & Oscillating Fan Size Guide

If you’re an indoor grower, you need to look out for the best fan for grow tent that can provide proper ventilation and maximum air supply. Set up Fans in grow tent are very easy, however, a lot of factors including humidity, temperature and CO2 levels depend on fan performance. All of the notable factors can be controlled with the fan.

We reviewed hundreds of inline and oscillating fans available on the market and created a list of the Most used 20 fans for grow tent (10 inline & 10 oscillating ) to help you choose the one that suits your grow rooms the best.

Each Fan was evaluated across a variety of factors: CFM, Speed setting, Noise, Vibration, Durability, Power Usage and much more. These products are truly the best options out there

Is it necessary to have fans for grow tents?

It is essential to set up inline fans, intake fans as well as booster fans so that the grow room experiences a constant stream of carbon dioxide and not be affected by stale air.

With a great airflow, plants experience increased levels of photosynthesis and depend upon the fresh air that is often available in outdoor spaces.

Some of the grow tent fans help plants to nurture on the basis of durable fan settings, hence it is necessary not just to set up the fan but also observe the overall longevity of its service. Check the Comparison Table and find out the best fan for grow tent.

10 Best Fan For Grow Tent

IMAGE PRODUCT DETAILS price
BEST 6 INCH FAN
Size: 6 inches
Airflow rate of 402 CFM
10 speed settings
BEST 6″ COMBO
Size: 6 inches
Airflow rate of 442 CFM
Variable speed levels
BEST 4 INCH FAN
Size: 4 inches
Airflow rate of 205 CFM
Fan speed control as well as timer and alarm
BEST 4″ COMBO
Size: 6 Inch
Air flow rate of 390 CFM
1050+ RC 48 Australian Virgin Charcoal Bed
Size: 4 inches
Airflow rate of 200 CFM
Fan speed can be controlled with external controller
Size: 6 inches
Airflow rate of 400 CFM
Strong ceramic-coated metal housing
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Size: 6 inches
Air flow rate of 433 CFM
Steel body with durable powder coated finish
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Size: 10 inch
Airflow rate of 760 CFM
Permanent lubricated bearings
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Size: 6 inches
Airflow rate: 240 CFM
Permanently lubricated bearings
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Size: 6 inches
Airflow rate: 188 CFM
Power input : 18 watts

10 Best Oscillating Fan for Grow Tent

IMAGE PRODUCT DETAILS price
Comes with 2 speed setup
Size: 6″ blade size with 8.5″ housing.
Triple spiral fan for better air circulation

premium choice
16 inch diameter fan blade
Airflow rate of 2118 CFM
3 different speed levels
budget friendly
Size: 6 inches
Includes two levels of quiet fan speeds
Adjustable fan head to direct airflow as needed
our top pick
Size: 6 inches
Two different quiet fanning speeds
Can be adjusted and tilted as needed
6 inches fan blade
2 speed setting 
Attached anti skid rubber mat
Size: 7 inches
Three fan speed levels
Circulates both cool and warm air
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Size: 16 inches
41 to 47 inches height adjustment 
Provides 75 degree oscillation
25.4 x 7.2 inch of airflow footprint
5 blades with 3 different speed levels
Easy grip handle and easy to move and install
Size: 16 inches
Airflow Rate: 2800 CFM
3-speed motor along with 3 mode settings
Size: 16 inches
3 fan speeds and 3 wind modes
Has a timer-off option variable oscillation direction

Reviews of 10 Best Inline Fan for Grow Tent

Proper ventilation is so crucial to indoor plants as much as breathing is to humans. The accurate fan size has a direct connection with your plant’s growth and ventilation.

01

AC Infinity CLOUDLINE T6 – Best Inline Fan for 5×5 Grow Tent

Key Features

  • Size: 6 inches
  • Airflow rate of 402 CFM
  • 10 speed settings
  • Quiet and energy efficient fan
  • Includes speed control, alarm and timer
  • Comes with an automated programmer setting
  • Smart controller for temperature and humidity moderation

If you are looking fo the best fan for your 5×5 Grow tent, AC T6 Is the Perfect one. Many processional also say that it is the best inline fan for 4×4 grow tent because they use HPS Grow Lights.

Bye The Way,

After a lot of consideration, the AC Infinity Cloudline T6 happens to top the list of overall Best Grow Tent Fan.

Generally, this inline fan is meant to help in ventilating hydroponic grow tent & grow room. That’s not all, It helps to get rid of bad smells too. At the same time, it comes with intelligent humidity and temperature programming.

The incredible feature of this very product is its self adjusting airflow. Complying with the automated programming setting of T6, the parameters can be set with this fan and the airflow will keep moving.

Additional features of the fan include speed settings. Having 10 speeds in a single fan is a lot. However, 10 speeds help with any environment the plants are breathing in.

When it comes to noise disturbance, you should rest assured that this fan is exceptionally quiet and power-efficient as well.

It isn’t by mistake that fan tops the list. Due to its mixed flow design, the fan maintains peak performance even under high static pressure. Therefore, this is one of the quietest fans for growing tents that you will come across in the market.

Pros

  • Intelligent programming
  • Has a quiet fan
  • Power-efficient
  • Wired sensor is very firm
  • Dust and liquid protection
  • Adjustable fan speed

Cons

  • Its price is relatively high
  • Doesn’t mention about the warranty

02

iPower 6″ Fan Filter Combo – Best For 5×5 Grow Tent

Key Features

  • Size: 6 inches
  • Airflow rate of 442 CFM
  • Variable speed levels
  • Permanently lubricated bearing
  • Removes heat as well as bad odors
  • Composite fan blades and center hub
  • Fire resistant coating with corrosion-resistant wire helix

This 6 inch fan filter ducting combo is of quality UL components to enhance quiet operation. In fact, this device features Australia’s world-class carbon filter that also filters bad odors with a great. The productive operation of the fan which solves all the air delivery problems is hence considered as one of the best grow room fans.

Also, it comes with a 6″ aluminium ducting that is 25 feet long. In addition, the package includes two stainless clamps. On top of these features, the iPower 6 inch 442 CFM inline fan is corrosion resistant and flame retardant.

It has a three-speed setting that you can apply according to your liking. To protect the fan motor from burning, the controller doesn’t go below 50%. Actually, this iPower inline fan can withstand a temperature range from -18 degrees Celcius to 85 degrees.

The ceramic coating on one of the best and affordable grow tent fans cannot be overlooked. It fights against corrosion forming from the atmosphere and reduces the possibility of wear and tear.

Pros

Uses world-class filter
Has 3-speed levels
It runs relatively silent
It is corrosion resistant
The machine is durable
Easy to install
Precise construction
Features carbon filters

Cons

It is expensive
The kit is heavy

03

AC Infinity CLOUDLINE T4 – Best Fan for 4×4 Grow Tent

Key Features

  • Size: 4 inches
  • Airflow rate of 205 CFM
  • PWM-controlled DC or EC-motor within
  • Very low noise production of <28 DbA
  • Fan speed control as well as timer and alarm
  • Temperature and humidity programming with smart controller

Another best grow tent fan from AC Infinity, This device happens to be one of the Quiet 4” Inline Duct Fan. It features a mixed flow design that combines with PMW- DC controlled motor. This ensures that the device operates as silently as possible.

Also, the fan has a humidity and temperature intelligent programming for alarm control, timer, and speed control.

In addition, it is suitable for ventilating hydroponic grow tents and grow rooms as well as controlling temperatures. Since the device operates with minimum noise, it also happens to be power efficient. When you purchase the AC Infinity Cloudline 4 inch inline fan, the kit comes with duct clamps and the necessary mounting hardware.

The best overall inline fan feature of this model includes the noise-free PWM motor which has the power to operate quietly. The PWM motor of this inline fan also comes with an energy efficiency guarantee. From all the inline fans reviewed, The cloudline T4 is surely a great fit with smart programmable features.

Pros

  • It is power efficient
  • Low noise production
  • Comes with mounting hardware
  • Features long connecting cables
  • Features intelligent programing

Cons

  • It is relative expensive
  • The controller resets the settings in case of a power outage

04

VIVOSUN 4 Inch Ventilation Kit – Best for 4×4 Grow Tent

Key Features

  • Size: 6 Inch
  • Air flow rate of 390 CFM
  • Low noise production:<37 dB
  • 1050+ RC 48 Australian Virgin Charcoal Bed
  • Includes one pre-filter
  • Permanently lubricated bearings

Vivosun is famous for producing world-beating grow tent kits ( grow tent, LED & HPS Grow Light, Carbon Filters, and much more). Actually, the brand is renowned for hydroponic products. The easy speed adjustment of the grow tent fan makes it reliable with variable speed controller.

The Vivosun 4 Inch 190 Cfm fan is a heavy-hitting blower that has a fan speed of 2300 rpm. The airflow efficiently moves to your specific location for optimum ventilation.

Despite all these features, the device produces only 32db levels of noise. Also, the fan comes with the 1050+ RC 48 powerful carbon filter from the Australian virgin charcoal bedstead.

Specifically, this filter helps to get rid of the pungent odor that comes from indoor grow tents.

When you purchase the kit, it comes with a free pre-filter. Therefore, you don’t have to buy a filter for the first six months or so.

Pros

  • The fan is enough powerful
  • It is power efficient
  • Features a powerful carbon filter
  • It is a multipurpose fan

Cons

  • Lacks controllable fan speed
  • It is difficult to get a level mount

05

Tjernlund M-6 Inline Duct Booster Fan – Best For 4×8 Grow Tent

Key Features

  • Size: 6 inches
  • Airflow rate of 460 CFM
  • Quiet functioning
  • Best for exhausting high-moisture grow tents
  • Fan speed can be controlled with external controller

The Tjernlund M-6 is the best exhaust fan for grow tent. Actually, it happens to be best for exhausting high humidity areas. If you have a small grow room where you grow hydroponic plants, this grow tent fan is suitable for you.

The package includes mounting brackets and the necessary hardware that goes together with this fan. This grow tent fan is popular for low power usage. Moreover, this is amongst those exhaust fans which comes with a power cord. The fan size is compliant for any grow tent size.

Also, this device has a controllable fan speed. Unfortunately, you have to buy the speed control device separately. It isn’t included in the package.

The Tjernlund M-6 is power efficient and produces considerably low sound. Therefore, this is the ideal fan you should consider for a small/ medium grow room.

Pros

  • It is versatile and durable
  • Suitable for high moisture areas
  • Useful for small grow tents
  • Fan noise is minimal
  • Produces low amounts of noise
  • Includes mounting brackets plus hardware

Cons

  • Speed control device not included
  • Comes with a very short cord

06

Hydrofarm Active Air 6″ Fan- Best for 8×8 Grow Tent

Key Features

  • Size: 6 inches
  • Low noise production
  • Strong ceramic-coated metal housing
  • Sealed bearing that requires no lubrication
  • Brushless heat protected AC motors with UL recognized components
  • Includes mounting brackets
  • Pre-wired 8 foot 120V cord

When experience this fan, the first thing you notice is that it is one of the most affordable active air inline fan.

The hydrofarm active air fan offers originality & outstanding performance at an affordable price. Amongst the wall mount fans, hydrofarm active air is built with a very sturdy high grade quality steel that can handle the roughest environments.

The brushless AC motor is thermally protected and has sealed bearings for life. Therefore, it will not require any form of lubrication at any given time.

Besides, the device has an adjustable fan speed to ensure that it lasts for long. The construction is generally metallic, but it also features ceramic coating.

Pros

  • It is power efficient
  • Produces low noise
  • Protect AC motor
  • It is relatively affordable
  • Has a long power cable
  • Doesn’t require lubrication
  • The components used are UL listed
  • High performance in static environments

Cons

  • The fan isn’t as powerful as others

07

Hurricane 4in Inline Fan – Best for 3×3 Grow Tent

Key Features

  • Size: 4 inches
  • Quality UL approved components
  • Steel body with durable powder coated finish
  • Lightweight with easy installation and disassemble

Are you looking for the best inline fan for commercial use? Then, here it is.

Amongst all the inline fans for commercial use hurricane inline centrifugal stands as the most productive grow tent fan.

It is one of the high-grade commercials which has exceptional performance. The volume of air this grow tent fan provides is more than impressive. The metal blades of the inline fan are very strong and fast on speed. The adjustable tilt of the fan gives a solid 90 degree oscillation.

The entire body of the machine is made of steel for durability and has a powder-coated finish. Also, since it is made of high-quality UL components, the fan is ideal for quiet use.

The device comes with an 8 feet long 120 volts power cable. If you are not a tech person, you don’t have to worry. The package is easy to install, and it only takes a few minutes.

Pros

  • The fan is made of durable steel
  • It is ideal for commercial use
  • Comes with 5-year manufacturer’s warranty
  • It is easy to mount
  • Produces low amounts of noise

Cons

  • Doesn’t come with a speed control

08

HYDROFARM Active Air 10″ inline Duct fans – Best For 10×10 Grow Tent

Key Features

  • Size: 10 inch
  • Airflow rate of 760 CFM
  • Protected AC motor in thermal conduction
  • Permanent lubricated bearings
  • Sturdy ceramic-coated metal housing
  • Made with UL recognized body parts
  • Mounting brackets and pre-wired 8 foot 120V cord included

This is the best Inline Fan for grow tents which are designed for long lasting use. Actually, it comes in a metallic and ceramic construction.
In design, it is an ideal fan for small & medium grow tent.

Technically, it has an AC motor that is thermally protected. It also has a speed controller that also helps to keep the motor safe. Therefore, you can be sure that the device will be in excellent working condition for a long time.

This item has a quality moulded impeller and produces a low amount of noise when operating.

Pros

  • The device is durable
  • Thermally protected
  • The fan doesn’t require lubrication
  • It is tranquil during operation
  • Comes with mounting brackets

Cons

  • The price is a bit high
  • The fan may not be powerful enough

09

VIVOSUN 4″ Exhaust Intake Fan – Best For 2×4 Grow Tent

Key Features

  • Size: 6 inches
  • Airflow rate: 240 CFM
  • Power input: 37 Watts
  • Balanced blades
  • Portable and lightweight
  • Permanently lubricated bearings

It is a decent choice for a grow tent exhaust fan If you are looking for something powerful and quiet at the same time.

This device is also on the affordable side if you are not planning to break the bank to install a ventilation system within your grow tent.

With a very low power input along with a lightweight body and portability, this exhaust fan can be a great option that will serve your gardening needs for a long while.

Moreover, the high airflow rate of 240 CFM and the durable lubricated bearings are also two of the convenient key features that might make this fan suitable for your purpose.

Pros

  • Saves energy and cost during operation
  • Super quiet mechanism with superior balancedblades
  • Bearings require no servicing or maintenance during use
  • Can cleanse any bad odor and gases
  • Easy installation with no hassle
  • Can be used with external speed controller

Cons

  • Not waterproof body
  • No warranty or guarantee on the device
  • Does not include any speed settings or controller

10

SAILFLO Exhaust Fan – Best For 2×2 Grow Tent

Key Features

  • Size: 6 inches
  • Airflow rate: 188 CFM
  • Power input : 18 watts
  • Includes over-heat protection
  • Long 39-inch wire
  • 3 years of service life

SAILFLO Exhaust Fan is well-known for its long service life of over 3 years along with its over heating protection feature, which makes this fan an attractive choice as a grow tent exhaust fan.

The long 39-inch wire attached to the product makes it very easy to install at any required location. The lightweight convenient size along with the decent airflow rate is also a few of the features you may want to try out by purchasing this fan.

Furthermore, you can also attach an external speed controller to the unit if you need modified speed settings and levels.

Pros

  • Easy to install and setup
  • Low power noise during operation
  • Can be used with an external speed controller if needed
  • Can be used to ventilate out any bad odor or gases
  • Motor generates very low heat, making it last longer with long service life
  • Contact point disconnects automatically if the heat threshold is exceeded

Cons

  • May create slight noise in some of the units
  • No warranty or guarantee included with the product

Review of 10 Best Circulation Fan for Grow Tent

Nowadays, creativity is on the increase. Some people are growing plants within the indoor environment under controlled conditions. One of the tools that many are using to regulate the temperatures is the circulation fans in grow tent. Most grow tent oscillating fans provide optimum level air circulation.

Manufacturers are daily loading the market with multiple types of fans. The saturation poses a significant challenge to the consumers who may find it challenging to know the correct ones. This write-up takes the whole credit of guiding you to the right product.

01

VIVOSUN 6″ Clip on Oscillating Fan – Best for 4×4 Grow Tent

Key Features

  • Size: 6 inches blade size with 8.5 inches housing
  • Power input: 20 watts
  • Size: 6 inches blade size with 8.5 inches housing
  • Triple spiral fan for better air circulation
  • Comes with 2 speed setup
  • Quiet functioning during use
  • 90-degree horizontal & 120-degree vertical range

It is one of the most popular and best oscillating fan for 4×4 grow tent from Vivosun manufacturer. It has a unique design that features triple spiral fan blades that will make your plants fresh. The fan comes from sturdy materials that can protect the plants from any damages.

You can simply adjust the direction of the airflow by the use of a shake rod. Still, the fan has an exceptional 120-degree horizontal range and 180-degree vertical range. You can mount this grow tent Oscillating fan on the wall or put it on a stand in a tent.

This fan is versatile and convenient by ensuring a thorough circulation of the air within the room. Overall, the fan is efficient and easy to use; therefore, it favors indoor gardening.

Pros

  • It offers 360-degree oscillation speed.
  • The product is easy to install on varying surfaces.
  • It’s lightweight and compact for easier portability.
  • It offers double speeds for convenient use.
  • Clip-on anywhere in grow room

Cons

  • Proves to be loud at high speeds.

02

Hurricane Wall Mount Oscillating Fan- Best for 2×2/3×3 Grow Tent

Key Features

  • Power input: 55 watts
  • 16 inch diameter fan blade
  • 3 different speed levels
  • 90 degrees oscillating angles
  • Airflow rate of 2118 CFM
  • 120 volt cord included

Hurricane wall mount oscillating fan proves to be reliable and versatile in performance. It gets better when it features the three speed modes, namely, low, medium, and high. You can conveniently select the right speed to support plant growth. This grow tent oscillating fan has a 3 speed setting that allows it to adjust direction of airflow quite smoothly.

You can use it in various places. Furthermore, the fan gives an option of selecting a 90-degrees oscillation, or you can decide to lock it in a particular place.

The user can also adjust the fan’s head to direct the airflow to the direction of his choice. The product is also easy to install, and it comes with a one year warranty.

Pros

  • The product is highly efficient while in use.
  • Its sturdy construction makes it long-lasting.
  • The products feature three speeds for convenience.
  • The product meets the standards of ETL.

Cons

  • It is a slight noise when operating at high speed.

03

Genesis 6″ circulation Fan – Best For 4×2 Grow Room

Key Features

  • Size: 6 inches
  • Includes two levels of quiet fan speeds
  • Can be clipped on or left on surface
  • Adjustable fan head to direct airflow as needed
  • Lightweight with a sturdy structure and base

You can enjoy a noiseless operation that won’t interfere with people’s rest when this clip fan is at work. The presence of its dual features makes it adjustable to any angle to provide an efficient service.

Furthermore, it has an adjustable head, which one can use to customize the direction where the airflow should go.The clip fan also allows an increase in the coverage. Amongst all the grow tent oscillating fans, this fan size is has a great design that sticks it strong in its place

Most importantly, unlike fixed fans, this particular grow tent oscillating fan is easy to switch from clipon to table top and vice-versa. The butterfly screw on the fan head is simple to use.

Pros

  • Easy to set-up
  • noise-less
  • Sturdy construction
  • Great fan coverage
  • Affordable 
  • Customizable airflow direction
  • Adjustable angle

Cons

  • Might produce uneven oscillation

04

Comfort Zone 6″ – Best Grow Room Circulation Fans

Key Features

  • Size: 6 inches
  • UL, ETL, SAA, CE and NOM tested for quality
  • Two different quiet fanning speeds
  • Break-resistant ABS plastic blades
  • Can be adjusted and tilted as needed

Comfort Zone 6 is among the best 6-inch oscillating fans for grow tent in the market.. The fan consists of two fan speeds together with an adjustable tilt. The design makes the user direct the airflow in any direction.

The fan meets the standards of SAA and UL, which makes it pass all the quality tests in the market. Moreover, the fan has a sturdy clip clamp that provides stability. You can use this fan at grow your plants in grow tents with much worry.

Also, the fan has a 5.5-foot cord, which is long enough for convenience.

Pros

  • Covers wide area
  • affordable
  • Strong hold
  • Adjustable speed
  • Quiet operation

Cons

  • It may not be an all-powerful fan

05

VIVOSUN 6-Inch Clip-On Fan for Grow Tent

Key Features

  • 2 speed setting 
  • 60Hz frequency
  • Comes with a back mesh enclosure
  • Sturdy connection pillar
  • 6 inches fan blade
  • Attached anti skid rubber mat
  • Adjustable head

You can always consider the Vivosun Patented Oscillating  due to its specialized design. What does that mean? It provides an allowance to connect it to the pole tent to avoid sliding down the same pole. This is considered as the best oscillating fan for it;s dynamic energy saving output which runs at 110V and 60Hz frequency.

You can succeed in ensuring an efficient airflow when you want to spread fresh air within your tent. Or even better, it has a high and low setting to ensure your plants stay fresh and cool.

As if that is not all, the fan has a sturdy design that will not break easily while in use. Here is the catch, the high-quality material makes the product remain quiet when in operation.

Pros

  • Convenient installation
  • Quiet operation
  • Adjustable usage.
  • lightweight

Cons

  • The clamp doesn’t work so well.

06

Woozoo Oscillating Circulator Fan for Grow Box

Key Features

  • Size: 7 inches
  • Six different vertical tilt settings
  • Three fan speed levels
  • Circulates both cool and warm air
  • Built with special wind vane

If you are looking for a small oscillating fan for grow box with a price advantage, then Woozoo may take the lead. The fan provides an option to direct the airflow in any direction. For instance, the fan has six vertical tilt settings to oscillate from left to right.

You can accomplish all you need when you use its three-speed settings. That means you decide the type of speed you want. Its white color allows you to comfortably use it at the office or in any room of your choice.

Pros

  • Reasonable price
  • versatile design 
  • Lightweight
  • three-speed settings
  • Portable
  • Wide air coverage

Cons

  • The product proves to be loud while in operation.

07

Comfort Zone 16″ Oscillating Fan – Best For Large Grow Room

Key Features

  • Size: 16 inches
  • Large blades
  • Adjustable tilt head 
  • 41 to 47 inches height adjustment 
  • Provides 75 degree oscillation
  • 70 inches cord length

The product features a three-speed fan option, namely low, medium, and high. Still, the fan ensures an optimal airflow in the environment. This is the best oscillating fan to push air and circulate it throughout a large area of the grow room

If you’ve used different oscillating fans, you can easily adjust the fan’s head to suit in any direction. That design makes sure that all the surrounding plants experience adequate airflow for them to grow well.

Or even better, the fan has an adjustable height. For instance, you can change its height from 41 inches to 47 inches conveniently.

Pros

  • Easy to assemble
  • Easy to install
  • Built with metal grill
  • Adjustable height and tilt
  • features a three-speed setting.

Cons

  • It a bit delicate as compared to other fans.

08

Lasko 3300 – Best Fan for Grow Box

Key Features

  • 25.4 x 7.2 inch of airflow footprint
  • 5 blades with 3 different speed levels
  • Easy grip handle and easy to move and install
  • Minimal noise production during use
  • ETL listed and patended body parts

Lasko 3300 oscillating fan is a versatile product that you can use to cool the environment and make it comfortable. The fan has a three-speed design that is energy efficient. You can adjust its head to direct the air in any direction.

The product has a built-in carry handle for carrying convenience. You can use the handle to move from one place to the next with ease. On the other hand, the fan comes from the market while fully assembled. You will not bother setting and installing it again.

It rotates at 180 degrees, you can make use of this design to direct the air straight up or straight down or as appropriate. The good news about this oscillating fan is that it is convertible. 

Pros

  • The fan has three performance speeds.
  • The product comes while fully assembled.
  • The fan has a built-in carry handle for easier portability.
  • It has a sturdy design that makes it durable.

Cons

  • You should always turn off when moving it.

09

Tornado 16″ Remote Control Fan For Grow Room

Key Features

  • Size: 16 inches
  • Airflow Rate: 2800 CFM
  • Power input: 55 watts
  • Includes a remote control
  • 3-speed motor along with 3 mode settings
  • Made from plastic and alloy metal material
  • Can be used with a timer

The name says it all, a fan with a remote control feature! Tornado 16 Inch Digital Wall Mount Fan comes with a very high airflow rate which can remove even the most stubborn odors from your grow tent, making it a desirable ventilation system that can be a great addition to your indoor garden. Unlike traditional inline fans, Tornado 16 inch does a great job with exact fan regulation patterns.

Moreover, it is also a wall mount oscillating fan with a remote controller that includes variable speed levels with quiet-operation attributes. This fan surely comes with a whole package of all the necessary features that you might be looking for your grow tent.

Best part of this fan: the three years warranty on the motor!

Pros

  • Portable and durable
  • Low operation noise
  • 900 extreme oscillating angles
  • Heat overload protection
  • Advanced circulation and ventilation

Cons

  • Remote require 2 AAA batteries which needs to be bought separately

10

SPT 16 inch Wall Mount Fan with Remote Control

Key Features

  • Size: 16 inches
  • 3 fan speeds and 3 wind modes
  • No batteries required
  • Has a timer-off option variable oscillation direction

The SPT SF-16W81 16″ Wall Mount fan is also a great fanning system which is inexpensive and will also get the job done.

This device comprises of a user-friendly remote controller with variable speeds and modes, thus you can choose your required setting as per your needs.

Portability and the ability to be used anywhere in your grow tent also add to the list of its user-friendly features.

Pros

  • High airflow 
  • Durable body 
  • Prevents rusting
  • 1-year warranty 
  • Variable sleep modes
  • different speed levels

Cons

  • May create some slight noise in some units
  • No mechanism included to avoid over-heating

What Size Fan for Grow Tent

Proper ventilation is so crucial to indoor plants as much as breathing is to humans. The accurate fan size has a direct connection with your plant’s growth and ventilation.

If thinking about calculating the fan’s size is already giving you a headache, don’t worry at all! We’ve turned this problem into an elementary math solution. Suppose you have 4×4 grow tent, then Follow the steps thoroughly to find out What size fan for 4×4 grow tent?

Besides, you’ll learn loads of details about different categories of fans and carbon filters right here in this article. So, let’s get into it.

What size fan for a 4×4 grow tent?

Finding out the proper size of a fan requires knowing the intended space the fan is going to air and the amount of power it needs to have to run the fan.

So, you need to follow a few steps before getting the result. Let’s get on with our math problem.

Step 1. Find out the air volume of CFM in grow tent

First, multiply the length, width and height to determine the CFM of a grow tent. Since 4×4 grow tents are quite popular these days, we will determine the fan size using this model.

The length and width are 4 feet & 4 feet and the height of your grow tent is supposedly 7 feet.

On a quick note, if you do not know or can’t remember the exact length, width or height, you can find the information on the packaging or in the order details.

Therefore,

 CFM= Width x Length x Height= (4x 4 x 7) feet = 112 cubic feet

N/B:- The unit of fan capacity is ‘feet’ in the US. We will follow the same rule. Anyway, the calculation is still right if you are using ‘meter’.

Step2. Determine air replacing time

According to the experts, you should be able to replace all the air in your grow tent once in a minute. In that case, the base fan capacities required from Step 1 will remain the same.

Because, replacing air once per minute, 112/1= 112 CFM

N/B:- If you are intending to replace your tent’s air once in a minute, you can skip this extension below.

But there’s another thing that needs to be discussed. If you do not have serious heating issues inside or outside the tent, then it is unnecessary to replace all the air within a minute.

To be more clear, suppose your grow room is in a colder place. So you can decide to replace your tent’s air once in 2 minutes then the CFM you have to aim for the fan is, 112/2 = 56 CFM.

Step3. Determine power, reducing percentage by carbon filter

There are a few factors that decrease the work efficiency of a fan. In order to purify the air inside a tent, it needs to go through the carbon filter which takes a bit of a time. Each carbon filter reduces 25% power of a fan’s capacity.

Step4. Find out power, reducing percentage by Grow light

Here grow lights are some essential components for a grow tent. But the irony is these grow lights produce heat by default which in the long run affects the CFM of the fan.

For 1 Grow light, 10% efficiency is going to be expelled from the actual CFM. You may have to raise the percentage if you are using HID bulbs in your grow tent, as it causes more heat than other grow lights in the market.

Step5. Determine power, reducing percentage by ducting

The length of duct work differs by the size and setup of a grow tent. For a (4x 4 x 7) feet tent, medium length in between 6 feet to 10 feet should be enough.

For 1 feet, the fan’s workability decreases by 1%.

So, if you are using a 6 feet ducting in the grow tent, then the tent’s fan efficiency decreases (1 x6) =6% because of ductwork.

Step6. Find out power, reducing percentage by the bends in ducting

Because of a long ducting or the tent’s architecture, your ducting system may have one or more bending.

One 90° bend reduces the fan’s power by 30% at least and a 45° bend decreases half of it (15%).

For small grow rooms, sometimes you can avoid ducting bend, it saves the power from being wasted because of the bend.

When the length of the ducting is less than 5 feet, you can expect no bend or 1 bend, just in case. The length of 5 feet to 10 feet can have 2 or 3 bends in it. For longer ducting, that has the length of 10 to 20 feet, usually 3 to 5 bends you can detect there.

Step7. Determine power, reducing percentage by the variation of atmosphere

Now adding the percentage of this step is absolutely your call to make. If your grow space is in such an area where extreme heat from outside raises the temperature then you can add  10% power to the final which will fight with the external heat.

Otherwise, if the temperature outside doesn’t bother the atmosphere inside; you can totally skip adding this percentage.

Step8. Add all the percentage together

In this step, all you have to do is add the percentage of the components you have in your grow tent.

Suppose you have 2 grow lights, 1 carbon filter, a 6 feet ducting with two 90° bends in your grow tent. So, what is the total percentage for the tent?

●        2 Grow Lights= (2 x 10)% = 20%;

●        1 Carbon Filter = 25%;

●        6 Feet Ducting = (6 x1)% = 6%;

●        2 bend, each bend 90° = (2×30)% = 60%.

The total is 111%.

Step9. Turn the percentage into decimal & add 1.0 with the number

Here in this step, the total percentage that you calculated in the previous step needs to turn into a decimal number and add 1.0 afterwards.

Just as we said, divide the total percentage by 100. So the decimal number is (111/100) = 1.11, and after adding 1.0, he gets (1+1.11) = 2.11.

Note-1. If your calculated percentage is less than 100, go with the same process with no hesitation. For example, 80% will become 0.8 and after adding 1, the result will be 1.8.

Note-2. Similarly, with the percentage less than 10, put a zero after the decimal and you are ready with the same process. Like, 7% will become 0.07%, plus 1, the result is 1.07.

Step10. Multiply the CFM with the number from the previous step (step9)

We are about to know the final CFM that is required for your (4x 4 x 7) feet tent needs. Congratulations, you’re indeed a survivor!

After multiplying the CFM and multiplier from the previous step- the capacity required for a 4x 4 x 7 feet grow tent is = (112 x 2.11) = 236.32

So, you must involve a fan that has a minimum capacity of 236 CFM.

However, we recommend you to always go for a fan with 25% more capacity (250-300 CFM). So you don’t have to run the fan at full speed which actually extends the fan’s life.

So, the fan Size for a 4 x 4 x 7 grow tent

Well, we recommend a 6-inch fan that provides over 250 CFM for a 4x 4 x 7 feet grow tent. If your CFM extends for any reason, don’t panic, you can still use the 6 inches fan till the CFM rating is less than 450.

For over 450 CFM, using an 8-inch fan brings out the best. 

Fan Size Suggestion for Different Grow Tent Size

If you are still in a mess, cheer up mate! Because we’ve got your back as we promised. Here are a few variations of grow tent’s size and a probable CFM for the fan size. You’ll most likely find the fan size here for the specific size of your tent.

What size fan for 2×2 Grow Tent?

For a 2x2x6 grow tent, the initial CFM/minute is, 2x2x6= 24 cubic feet

Excluded power: 2 grow lights (20%), 1 carbon filter (25%), 4 feet ducting (4%), altogether 49%. In decimal order (.49+1) = 1.49.

Final CFM for 2x2x6 Grow tent fan size, (24×1.49) = 35.76

So if you own a 2x2x6 grow tent, you will need a fan with a minimum of 100 CFM. But we suggest getting 25% extended power, such as having a 100-150 CFM Fan.

What size fan for a 2×4 grow tent?

For a 2x4x7 grow tent, the initial CFM/minute is, 2x4x7= 56 cubic feet

Excluded power: 3 grow lights (30%), 1 carbon filter (25%), 6 feet ducting (6%), altogether 61%. In decimal order (.61+1) = 1.61.

Final CFM for 2x4x7 Grow tent fan size, (56×1.61) = 90.16

So if you own a 2x4x7 grow tent, again having a fan with a minimum of 100 CFM will be enough. But we suggest getting 25% extended power, such as having a 100-150 CFM Fan.

What size fan for a 3×3 grow tent?

For a 3x3x7 grow tent, the initial CFM/minute is, 3x3x7= 63 cubic feet

Excluded power: 3 grow lights (30%), 1 carbon filter (25%), 6 feet ducting (6%), and one 90-degree bend (30%) altogether 91%. In decimal order (.91+1) = 1.91.

Final CFM for 3x3x7 grow tent fan size, (63×1.91) = 120.33

So if you own a 3x3x7 grow tent, you would need a fan with a minimum of 150 CFM. But we suggest getting 25% extended power, such as having a CFM Fan.

What size fan for a 4×4 grow tent?

For a 4x4x6 grow tent, the initial CFM/minute is, 4x4x6= 96 cubic feet

Excluded power: 4 grow lights (40%), 1 carbon filter (25%), 8 feet ducting (8%), and one 90-degree bend (30%) altogether 103%. In decimal order (1.03+1) = 2.03.

Final CFM for 4x4x6 Grow tent fan size, (96×2.03) = 194.88

So if you own a 4x4x6 grow tent, you will need a fan with a minimum of 200 CFM. But we suggest getting 25% extended power, such as having a 250-300 CFM Fan.

What size fan for a 4×8 grow tent?

For a 4x8x7 grow tent, the initial CFM/minute is, 4x8x7= 224 cubic feet

Excluded power: 4/5 grow lights (40%), 1 carbon filter (25%), 10-12 feet ducting (10%), and two 90-degree bends (60%) altogether 135%. In decimal order (1.35+1) = 2.35.

Final CFM for 4x8x7 Grow tent fan size, (224×2.35) = 526.4

So if you own a 4x8x7 grow tent, you will need a fan with a minimum coverage of 500 CFM. But we suggest getting 25% extended power, such as having a 550-600 CFM Fan.

What size fan for a 5×5 grow tent?

For a 5x5x8 grow tent, the initial CFM/minute is, 5x5x8= 200 cubic feet

Excluded power: 4/5 grow lights (40%), 1 carbon filter (25%), 12-15 feet ducting (12%), and two 90-degree bends (60%) altogether 137%. In decimal order (1.37+1) = 2.37.

Final CFM for a 5x5x8 grow tent fan size, (200×2.37) = 474

So if you own a 5x5x8 grow tent, you will need a fan with a minimum of 500 CFM. But we suggest getting 25% extended power, such as having a 500-550 CFM Fan.

What size fan for an 8×8 grow tent?

For an 8x8x7 grow tent, the initial CFM/minute is, 8x8x7= 448 cubic feet

Excluded power: 4/5 grow lights (50%), 1 carbon filter (25%), 14-18 feet ducting (14%), and two 90-degree bends (60%) altogether 149%. In decimal order (1.49+1) = 2.49.

Final CFM for 8x8x7 Grow tent fan size, (448×2.49) = 1115.52

So if you own an 8x8x7 grow tent, you will need a fan with a minimum of 1000 CFM. But we suggest getting 25% extended power, such as having at least a 1200 (combining an intake & an exhaust fan) CFM Fan.

What size fan for a 10×10 grow tent?

For a 10x10x8 grow tent, the initial CFM/minute is, 10x10x8= 800 cubic feet

Excluded power: 6 grow lights (60%), 1 carbon filter (25%), 18-22 feet ducting (20%), and two 90-degrees bend (60%) altogether 165%. In decimal order (1.65+1) = 2.65.

Final CFM for 10x10x8 Grow tent fan size, (800×2.65) = 2120

So if you own a 10x10x8 grow tent, you will need a fan with a minimum of 2000 CFM. But we suggest getting 25% extended power, such as having 2200 (combining an intake & an exhaust fan) CFM Fan.

Frequently Asked Questions

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

Yes. you need a fan because your grow tent requires proper ventilation to regulate the conditions within the shelter.

The plants in the grow tent requires a specific temperature and humidity for better growth. A fan in grow tent will ensure better air circulation that will improve the internal conditions.

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

It depends on the internal condition. You can always switch off when the temperature and the humidity are optimal. Later, you have an option to run the fan on and off at a particular frequency. For instance, you can run them for 15 minutes hourly.

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

A fan covers all the critical roles in the grow room by eliminating humidity or hot situations. Furthermore, they will prevent molds and pests. As the airflow sweeps over and under your plants, consequently, it lower chances of mold development as well as pests.

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

The standard way to run the exhaust fan in a grow tent should be at an interval of three minutes. You can optimize the exhaust time in the grow tent by refreshing the air for at least a third of the time. By doing so, you attain better results.

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

There are insulated or heavy-duty ducts. The length and size affect efficiency. It will be to keep the length of the duct as short as possible. The key reason is that small design will reduce the distance in which the exhausted hair will travel. We have a detailed guide you can check about how to install an inline duct fan in grow tent.

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

The correct size fan for any grow tent largely depends on the size of the grow tent itself.

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

The standard measure is, you may require 1 CFM per square foot of your room. You can determine the square footage of your room by multiplying its length by width. For instance, if your room is 5 feet by 4 feet. Then the square footage is 20. For better performance, you should select the best grow tent fan.

8. Which is the best Fan for Grow Tent

All are the best fans for grow tents, as mentioned above. You can select any from this list but we recommend the product from AC infinity. Because these are the most popular and most used grow tent fans. All the fans here provide optimum service as per needed.

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