If you’ve chosen to grow hydroponic plants in a grow tent, you’re probably in the market for the best grow tent fan.
Don’t underestimate this purchase. Grow tent fans are vitally important to the health of your system.
What do grow tent fans do?
- Replenish CO2, which your plants need for photosynthesis and growth
- Wick away excess water vapor from transpiration
- Prevent hot and cold spots from developing
- Prevent pests and disease
While you can use any fan to circulate air, fans specially-tailored for grow tents tend to be easier to install and much more effective.
Ready to find the best grow tent fan for your indoor setup?
So are we.
Let’s get started.
7 Best Grow Tent Fans
These are our top picks spanning 4-inch, 6-inch, and 8-inch ventilation systems.
1. TerraBloom ECMF-100 4-Inch Inline Duct Fan
| Voltage | 120V |
| Power | 18W |
| Flow Rate | 160 CFM |
| Weight | 3.59 pounds |
| Diameter | 4″ |
| Dimensions | 6.3″ × 7.3″ × 5.9″ |
| More Info | View on Amazon → |
Besides boosting airflow, this inline duct fan from TerraBloom creates negative pressure environments, simulates natural wind, exhausts odor and smoke, and takes in fresh air from the external environment.
In short, it does everything you could ever want a grow tent fan to do..
Built with a cutting-edge, brushless EC motor and dual jet type blades, this blower delivers a 160 CFM airflow rate using just 18W at maximum speed. That translates to just $45 annually for 24/7 operation at max speed using $0.29 average cost per kWh.
The dual jet propellers push air further and reduce static pressure. The heavy-duty dual ball bearings used are rated for up to 70,000 hours of operation. That’s 8 full years.
The included variable controller allows you to choose any speed from 0-100% without any humming or background noise at low speeds. This fan also doesn’t purge or waste electricity at lower speeds.
You can also upgrade to a wireless remote control or intelligent thermostat speed controller at a higher price point.
The coated aluminum housing resists rust and protects the motor and blades from accidental damage, making this fan suitable for operation in the most demanding applications. It has an IPX4 ingress protection rating.
This fan is part of the TerraBlooms ECMF series fans which are ETL listed and conform to UL standards 507, certified to CSA Standard C22.2 No 113 for the United States and Canada.
It’s available in 4, 6, 8 and, 10-inch sizes and comes with a 2-year warranty.
Simply, it’s the best grow tent fan, period.
Pros of the TerraBloom ECMF-100 4-Inch Fan
- Made of high-quality parts
- 0-100% speed range
- Operates quietly
- Low power consumption leading to lower electricity bills
- ETL and UL 507 listed
Cons of the TerraBloom ECMF-100 4-Inch Fan
- Pricier, but that’s to be expected with such a high-quality fan from a company with amazing customer service
2. VIVOSUN 4-Inch 195 CFM Inline Duct Fan
| Power Supply | 110/120V |
| Power | 28W |
| Speed | 2500 RPM |
| Flow Rate | 195 CFM |
| Weight | 2.59 pounds |
| Diameter | 4″ |
| Dimensions | 8.1″ × 7.7″ × 7.1″ |
| More Info | View on Amazon → |
The VIVOSUN 4 Inch 195 CFM Inline Duct Ventilation Fan for grow tents has an efficient design and a powerful blower with a fan speed of 2500 RPM for an airflow of 195 CFM.
The fan’s 4-inch diameter and lightweight design occupies little space. Fitted with a centrifugal impeller and a flow deflector that concentrates the fan stream and cuts turbulent kinetic energy to reduce sound output to just 30 dB, it’s designed to reduce noise levels and increase airflow. The durable plastic fan housing and blades also help keep things quiet.
The fan’s motor features a permanently lubricated bearing that requires no maintenance.
It has flanges on both the intake and exhaust end and also comes with a 5.9-foot long cord to make installation easy.
It’s extreme temperature and vibration tested. This durable fan, which can also be used with a speed controller (sold separately), can be used anywhere.
Pros of the VIVOSUN 4-Inch 195 CFM Inline Duct Fan
- Lightweight
- Easy to install
- Runs quiet
- Good bang for your buck
Cons of the VIVOSUN 4-Inch 195 CFM Inline Duct Fan
- May stop working after a year or less
3. Genesis 6-Inch Clip Convertible Fan
| Weight | 2 pounds |
| Diameter | 6″ |
| Dimensions | 5″ × 6″ × 10″ |
| More Info | View on Amazon → |
Not made primarily for grow tents, the Genesis 6-Inch Clip Convertible Table-Top and Clip Fan is a clippable fan that nonetheless acts as an excellent grow tent fan.
The fan comes with two quiet fan speeds that allow you to change the speed of your fan as per your preference. One is a powerful mode and the other is a lighter mode that’s more like a breeze.
This is a dual-feature fan that can be converted from a clip fan to a table-top fan, so even if you decide to stop growing hydroponic plants in grow tents, you can use this as your personal desk fan. Switching between these two modes is simple – you simply have to remove the butterfly screw on the fan head and attach whatever base you need.
Overall, the fan is easy to use.
You can also customize the direction of airflow with the adjustable head, which can be tilted and rotated in all directions.
Strong and sturdy grip clamps keeps this fan firmly in place, so you don’t have to worry about your fan slipping or falling. You can clip the fan on a structure that has a thickness of 1.06-1.65″.
The fan is ETL listed and employs overload safety protection using a fuse in the built-in power plug.
Pros of the Genesis 6-Inch Clip Convertible Fan
- 2 different speeds
- Adjustable angles
- ETL listed
Cons of the Genesis 6-Inch Clip Convertible Fan
- Can only be adjusted to face 1 of 8 directions
- Some units have excessive vibration
4. AC Infinity CLOUDLINE T6 Inline Duct Fan
| Power | 38W |
| Flow Rate | 402 CFM |
| Weight | 7.08 pounds |
| Dimensions | 7.9″ × 12.6″ × 8.4″ |
| More Info | View on Amazon → |
The AC Infinity CLOUDLINE T6 Inline Duct Fan is designed for hydroponic grow rooms and comes with a whole lot of added features, such as an intelligent controller with temperature and humidity programming, fan speed control, a timer, an alarm system, and eco-mode.
The mixed flow system of the fan is combined with a Pulse Width Modulation (PWM) controlled Electronically Commutated (EC) motor for quiet and energy-efficient performance. The EC motor, which is controlled using precise electronic pulses and smart programming, is also energy-efficient, using less power than conventional AC motors, and can save up to 40% in energy costs.
It’s constructed with heavy-duty steel and lightweight, low noise thermoplastics.
The fan’s mixed flow design using a stator blade and dual hydrodynamic wind circles helps maintain peak performance even in high static pressure environments.
The model includes a programmable controller with precise temperature and humidity sensors located on the 12-foot corded water-resistant precision probe. It can be programmed to automatically adjust the fan’s speed to varying low and high temperatures and humidity, thereby delivering the optimal amount of airflow exactly as needed. The speed is adjustable, and there are 10 speeds ranging from silent to powerful.
The motor houses dual ball bearings rated at 67,000 hours, which allows the duct fan unit to be mounted in any direction.
The unit is IP44 rated to be highly resistant to dust and liquids. It also performs well in harsh environments.
For larger grow tents and growing spaces, you can connect two inline fans to an EC smart controller to provide a total air flow of 804 CFM.
The fan comes in 4, 6, 8, and 10-inch models.
What’s Included
- Corded sensor probe
- AC power plug
- Two duct clamps
- Required mounting hardware
- Controller
- User manual
Pros of the AC Infinity CLOUDLINE T6 Inline Duct Fan
- Comes with a programmable controller, countdown timer, alarm system, and eco-mode
- 40% increased efficiency
- IP44 certified
Cons of the AC Infinity CLOUDLINE T6 Inline Duct Fan
- No option to buy without the programmable controller
- May vibrate
5. VIVOSUN 4-Inch Inline Duct Fan
| Power Supply | 110/120V |
| Power | 12 W |
| Speed | 2930 RPM |
| Flow Rate | 100 CFM |
| Weight | 1.69 pounds |
| Diameter | 4″ |
| Dimensions | 6.54″ × 5.98″ × 4.72″ |
| More Info | View on Amazon → |
The VIVOSUN 4-Inch Inline Duct Fan is an HVAC exhaust intake fan that’s not only perfect for boosting airflow in long runs of ducting, but is also capable of removing exhaust and odors from various places, including grow tents.
This fan is portable and lightweight and can be installed anywhere easily. It has balanced blades for boosting air supply and venting exhaust air. This ensures a long service life and quiet operation.
The centrifugal influencer provides a strong airflow with less noise, and the fan comes with a strong motor that’s long-lasting. The permanently lubricated bearing operates quietly and requires no maintenance.
It can be used as an intake fan to bring fresh air into grow spaces and also as an exhaust fan in smaller setups with LEDs or lights under 400W.
The system is fluted on both ends to receive ducting and comes with a sufficient 5.5-foot grounded power cord.
The maximum operating temperature of the motor is 266℉ and the maximum ambient temperature is 140℉. If any materials or particles get into the duct fan and get the fan blades stuck, you have to immediately turn off the power supply and clean it.
This fan comes with a 1-year warranty.
Pros of the VIVOSUN 4-Inch Inline Duct Fan
- Runs quietly
- Lightweight
- Can act as an intake fan and also as an exhaust fan for smaller systems
Cons of the VIVOSUN 4-Inch Inline Duct Fan
- The actual CFM may be significantly lower than what is stated
- Poor performance
6. REENUO 5000mAh Camping Fan With LED Lights
| Power Supply | Uses 4400mAh rechargeable and replaceable battery |
| Weight | 0.7 pounds |
| Dimensions | 2.4″ × 5.3″ × 7.1″ |
| More Info | View on Amazon → |
A strong, quiet, and energy-saving fan, the REENUO 5000mAh Fan was designed to act as a camping fan with LED lights in its head.
The fan has a power consumption of 4W, and the noise produced is only 30 dB. The fan’s speed is adjustable at three levels and the wind power is adjustable horizontally/vertically by 360°.
The ultra-stable chassis guarantees smooth operation even at high wind speeds.
The fan can be positioned in two different ways. You can either place it on a surface or mount it on the wall. The fan has a built-in hook at the bottom that makes it possible to hang anywhere.
It comes with a replaceable and rechargeable 4400mAh battery and can last for 4.5-40 hours after being fully charged (depending on the speed). The 39.3-inch USB charging cable is small and convenient.
The LED lights come with 2 brightness modes. A light control button on the fan can be used to easily adjust the night-light brightness. The fan can be charged by computers, laptops, and mobile phones using a USB charger, mobile phone adapter, or car charger.
The fan is durable and made of high-quality ABS material and is resistant to falling.
Small and compact, it’s suitable for smaller grow tents and grow rooms.
Pros of the REENUO 5000mAh Camping Fan
- Includes LED lights whose brightness can be adjusted
- 3 fan speeds
- Powered by rechargeable and replaceable batteries
Cons of the REENUO 5000mAh Camping Fan
- Wall adapter not included
- Not suitable for large grow spaces
7. VIVOSUN 6700mAh USB Powered Clip Fan
| Voltage | 5V |
| Power | 3.76W |
| Weight | 1.4 pounds |
| Dimensions | 7.48″ × 6.3″ × 4.33″ |
| More Info | View on Amazon → |
The VIVOSUN 6700mAh USB Powered Clip Fan is ideal for circulating air grow tents. It has 4 speed settings and a 360° pivoting head. The air direction can be adjusted by turning the head around.
The fan is equipped with a 6700mAh lithium battery with DC 5V/2A quick charging that has a charging time of 4 hours. It can work for up to 25 hours at minimum speed. Depending on the speed, the operation time lasts between 6.5-25 hours.
It has a 2-in-1 base, which makes it possible to rest the fan on a table or clip it to something less than 2 inches thick. It also features a hook at the bottom, which you can use to hang the fan.
The fan also comes with lights whose brightness levels can be adjusted. It features 2 simple to use buttons (LIGHT and FAN) to control 4 wind speeds and 2 brightness modes simply pressing a button.
With the latest technology in charging, the clippable fan allows for USB charging, improving its ease of use. The clip comes in 2 sizes, and the plug is UL listed, ensuring safety.
Pros of the VIVOSUN 6700mAh USB Powered Clip Fan
- 4 wind speeds
- Lightweight
- Includes light with 2 brightness modes
- 2-in-1 base and clippable
- USB chargeable
Cons of the VIVOSUN 6700mAh USB Powered Clip Fan
- Runs on battery and not suitable for 24/7 operation
Grow Tent Fans: Final Thoughts
- Grow tent fans improve airflow and bring down the humidity, creating a favorable environment for your plants.
- Any fan can be used as a grow tent fan, subject to the ease of installation, power, and efficiency.
If you have any questions about choosing the best grow tent fan, comment below!