We reviewed hundreds of indoor grow tent fans and grow room exhaust fans available on the market as of July 2020 and created a simple list to help you pick the best inline grow tent fan and ventilation system for your indoor cannabis grow. Each tent was evaluated across a variety of factors: cost, durability, reflectivity, frame-strength/weight capacity, ease-of-assembly and use, and much more. These tents are truly the best options out there.
Have a question about a specific fan? Ask us in the comments!
The list below ranks the top grow tent fans on the market for the year of 2020 (the cheat sheet table is below with price ranges). Keep in mind, price can fluctuate depending on the manufacturer so we will try to update the prices as frequently as possible. Please refer to the product links in each of the sections to get the most up to date pricing information on Amazon.
Whatever your budget, grow space size or level of experience, we think you’ll find a grow tent ventilation system here that works for you. Pro tip: for best results pair one of these with one of our most recommended grow tents.
Best Grow Tent Fan For Growing Marijuana 2020
Things to consider before buying
Cannabis cultivation indoors is highly satisfying. But closely controlling the amount of light, temperature, humidity, is a challenge even for the largest indoor growers we work with! The good news is, you don’t need to struggle with managing conditions in a room, just purchase a recommended tent ventilation system that will control your environment. See below for a detailed evaluation of each grow tent fan we reviewed.
Best Indoor Grow Tent Fan For Cannabis 2020 Reviews
Editor's Choice: AC Infinity CLOUDLINE T6 6” Inline Duct Fan
The new CLOUDLINE series contains a state-of-the-art EC-motor, and utilizes precise electronic pulses with smart programming to control fan speeds. This results in a 40% noise reduction over conventional AC duct fans relying on voltage suppression to lower fan speeds, which generates additional motor noise and heat.
Features a controller with active temperature monitoring that will automatically adjust fan speeds to respond to varying temperatures. Each system utilizes a DC or EC motor that is controlled using Pulse Width Modulation (PWM), which is quieter and more energy efficient than AC fans. Featuring a mixed flow design, the fans maintain peak performance in high static pressure environments. Ingress-protected against dust and liquids. The complete kit includes the inline fan unit, controller, user manual, and everything needed to mount the fan and power it through an outlet.
This is hands down the best grow tent fan we tested. While a bit more expensive than your other options, you definitely get what you pay for. You won't be disappointed!
Average Amazon Review: 4.7 stars
# of Amazon Reviews: 275+
Runner Up: iPower 6 Inch Inline Fan w/ Carbon Filter, Ducting & Speed Controller
The iPower 6 Inch Grow Tent Fan is made with quality UL components for quiet operation. Composite fan blades and center hub which reduces noise and vibration.
Comes bundled with a 6 Inch 1050+ IAV Australia Charcoal Filter: one of the world's most absorbent carbon filters available. Also includes 25 ft of uninsulated aluminum ducting + 2 stainless clamps.
Control switch for 3 settings w/ variable speed: OFF, HIGH, MED, LOW. Free pre-filter included. Recommended to replace the pre-filter every 6 months to protect your filter.
We like that the this combo from iPower includes everything you need. Quality doesn't quite measure up to the AC Infinity fan, but for the price and simplicity of an all-in-one bundle, this is definitely a good option.
Average Amazon Review: 3.9 stars
Hydrofarm ACDF6 Active Air 6" Inline Fan
Active Air In-Line Duct Fans offer innovation and performance at a great price. With a full line of fans to meet your needs, all Active Air Fans feature: Quiet operation Durable ceramic-coated Metal housing UL-recognized components High quality molded impeller Thermally-protected AC motor Includes mounting brackets and 8 foot pre-wired 120V cord.
Recommended to purchase with the Active Air Fan Speed Adjuster. Designed especially for centrifugal fans, this unit correctly and precisely adjusts fan speed without causing the motor to hum. Helps prevent damage to fan motors, ensuring longer life for the motor. More sensitive than any other unit on the market, it is compact and built to last.
Average Amazon Review: 4.4 stars
# of Amazon Reviews: 306+
VIVOSUN 6 Inch Inline Duct Fan with Carbon Filter Odor Control
- Energy efficient & quiet operation
- Lightweight & super easy to install.
- Balanced blades are ideal for boosting air supply and venting exhaust air.
- Engineered for maximum boost with minimum noise.
- Motor features a permanently lubricated bearing that operates quietly and requires no maintenance.
- Solve air delivery problems without major system rework or expense.
- Can be installed in any location, such as greenhouses, tents, etc.
- VIVOSUN Carbon Filters are perfect for the following applications: Grow tents, cupboards and cabinets.
- Anywhere without a roof/ceiling cavity to displace extracted air into.
- Air-cooled lighting.
- Lower-level floors of double/triple story houses.
- Window to window ventilation applications.
- Hot or cold "filtered air transfer" from one air conditioned room to another.
Average Amazon Review: 5.0 stars
# of Amazon Reviews: 5+
Vortex S Line S-600 Fan 6"
The inline ventilation fan shall have an externally mounted 120vac 60hz motor with automatic reset thermal reset overload protection. Fan and Motor must have permanently lubricated sealed bearings, double insulated wall, rubber gasket for duct connection. Fan body must have high impact resistant polycarbonate casing for heavy duty application making it durable and rust resistant, Body of fan must be of double walled, insulated construction to reduce fan noise and eliminate condensation, Fan shall be configurable to allow for bracket mounting on wall or ceiling mount, vertical or horizontal, Quick clip Bracket included allows fan to be quickly installed and/or reconfigured. Fan must have integrated back‐ draft damper.
Fan must be suitable for air‐stream temperatures up to 140F (60C) Fan must be ETL listed and must be 100% speed controllable. Product must conform to AMCA Standards and have the AMCA certified rating label affixed. (Fan airflow performance shall be based on tests conducted in accordance with AMCA Standard 211 and shall be licensed to bear the AMCA Certified label) Fan must have a 10 year warranty from the manufacturer.
Average Amazon Review: 4.5 stars
# of Amazon Reviews: 130+
Tjernlund M-6 Inline Duct Booster Fan 6"
Versatile and durable Tjernlund M-Series exhaust fans feature high pressure air handling performance with low noise and extremely low power usage. M-Series inline fans are ideal for long runs or air supply and exhaust applications requiring exacting performance. Use them as super quiet bathroom/spa exhausters to eliminate fogged mirrors and lingering odors. They also work great for exhausting high moisture areas such as hydroponics grow rooms or for sub-slab radon gas mitigation. All models come with standard power cord.
Average Amazon Review: 4.6 stars
Goplus Inline Duct Fan 6"
- High Quality-Durable plastic fan housing and blades for extremely low noise
- Premium Ventilation-Quickly and efficiently move vast amount of air
- Temperature Control and Speed Control---Cooling rooms that tend to accumulate too much heat or hot spots, and the speed controller for adjusting fan speed to desired level.
- For Air Purification-Removing a large amount of air pollutants and bacteria
- Easy to Assemble- Extended collar and lip for easy duct hook-up; Perfect for Any Environment-Commercial or residential.
Average Amazon Review: 4.4 stars
# of Amazon Reviews: 55+
Formline Supply 6 Inch Inline Duct Fan with Variable Speed Controller
- HELP MAINTAIN THE PERFECT PLANT ENVIRONMENT - Help simulate the fresh breeze plants enjoy in the wild within your grow tent.
- This grow tent exhaust or air intake vent system can create an environment where your flowers can thrive.
- Reduce the chances of root issue or pests due to excessive moisture and heat.
- EFFICIENT DESIGN - Formline fans are Quiet, Long lasting, have low energy consumption.
- CE Listed MULTIPURPOSE USE - In addition to Grow Rooms and Garden Tents, this 6 inch fan works great as an attic fan, bathroom fan, and commercial cooling
- 100% SATISFACTION GUARANTEE - All Formline Supply purchases are backed by our 100% Satisfaction guarantee. We ensure that you will be fully satisfied with your product or you will receive your money back.
Average Amazon Review: 4.3 stars
Hurricane Inline Fan - 6 Inch
Hurricane Inline Fans are commercial grade, high performance fans. The housings are made of steel with a durable powder coated finish. Made with quality UL components for quiet operation. Include mounting brackets with easy to follow instructions. Easily installs in minutes. These fans come with an 8 ft 120 volt power cord. Recommended for use with: Phresh & Black Ops Carbon Filters, Ideal-Air Ducting and Clamps, and Titan Controls Fan Speed & Ventilation controllers. Extremely reliable, high performance operation.
Average Amazon Review: 4.2 stars
Can Fan Pro Series 420 CFM Max Fan, 6"
Last but not least, we have the Can Fan Pro Series 420 CFM Max Fan.
Keep warm areas cooler with the Can-Fan 736746 Max Fan Pro Series 6 inch 420 CFM. The fan props up on its own and can work as a standalone or may be mounted in-line with your existing ductwork to increase airflow. The durable housing blends with surroundings, but the gentle breeze won't knock over or harm planters and pots. Includes high velocity airflow with 420 CFM to effectively move the air and ventilate indoor areas well, thus keeping your hydroponic garden from getting excessively warm. Special Features Include:
- Inline booster fan can be mounted in line with your existing duct work to increase airflow.
- Quiet running Includes an 120V power cord & plug 420 CFM Easy operation.
- Totally economical. Requiring only 69 watts of energy, this fan is a money saver.
- Several fan blades really rotate the air and provide ample circulation to eliminate stuffiness and keep the air cleaner.
- Quiet running and safe. Manufactured to operate quietly with only UL listed components, it's a safe option. Even more, it's not disruptive to the environment when you're tending your seedlings or cuts.
- In-line booster fan can be used as a standalone or it can be installed in-line with an existing duct system.
Average Amazon Review: 4.3 stars
Frequently Asked Questions
How do I choose the right size fan for my cannabis grow?
We'll be adding more information here soon.
What size extractor fan do I need for grow tent?
We'll be adding a grow room exhaust fan calculator here soon.
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Written by Max Anderson