Inline duct fans are fitted into walls, rooftops and inside duct holes, installed for the circulation of fresh air in rooms, controlling the humidity level, refreshing of the air quality at regular intervals, and for air ventilation and odor control. An inline duct fan is ideal for use in the bathroom, basement, and commercial hypotonic use. Plants and flowers grow healthy in regulated room temperature. However, exposing them to harsh climatic conditions, dry dusty air will slow down the growth speed which will make them die eventually. To avoid the unavoidable change in the weather condition plants are exposed to, various inline duct fans are designed to make hypotonic less stressful and much more rewarding. It comes with features that will humidify and circulate evenly well-purified plants need to grow fresh and healthy. All you need to make your inline duct fan work as effective as possible for a very long time is an intake fan, straight ducts, a fan of your choice and size, an exhaust fan calculator for determining the diameter needed, an external vent and a backdraft shutter to act as a preventive tool for air backflow during extraction. However, as a way to help you figure out the best duct inline fan, we’ve structured this article featuring top-rated products. Hence we are starting with our comparison guide below.

Top 7 Inline Duct Fan 2020 Comparison & Reviews

Product Nsme/ Image
TerraBloom ECMF-200 wireless induct fan
TerraBloom ECMF-200 wireless induct fan BUY NOW ON AMAZON!!!

  • 8 inch in size
  • 120 voltage
  • 710 cfm air flow
  • 6 speed control
  • Has a remote

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Ac Infinity Inline Duct Fan
Ac Infinity Inline Duct Fan BUY NOW ON AMAZON!!!

  • 402 cfm air flow
  • 6 inch in size
  • 120 voltage
  • 32 dbA sound
  • Programmable speed

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Vivosun Inline Duct Fan
Vivosun Inline Duct Fan BUY NOW ON AMAZON!!!

  • 190 cfm air flow
  • 4 inch in size
  • 2300 rpm fan speed
  • 5.9ft cord length
  • Variable speed control

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iPower GFLANXBOOSTER4 Inline Duct Fan

  • 100 cfm fan
  • 4 inch in size
  • 110/120 voltage
  • 40 db noise level
  • 2930 rpm fan

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Vivosun Inline Duct FanVivosun Inline Duct Fan BUY NOW ON AMAZON!!!

  • 195 cfm fan
  • 4-inch in size
  • 2500 rpm speed
  • 30 db noise level
  • Hassle free set up

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Fantech FR 100 Centrifugal Duct FanFantech FR 100 Centrifugal Duct Fan BUY NOW ON AMAZON!!!

  • 100 cfm fan
  • 4-inch in size
  • Molded plastic case
  • Weighs 5.1 pounds
  • 1.2 x 1.2 x 1.2 inches

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Pansonic FV20NLF1 Inline Duct FanPansonic FV20NLF1 Inline Duct Fan BUY NOW ON AMAZON!!!

  • Quiet operation
  • 240 cfm air flow
  • Galvanized steel design
  • Energy star certified
  • 3 year warranty backup

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Top 7 Inline Duct Fan 2020 Reviews

1. TerraBloom ECMF-200 wireless induct fan

  • Top 7 Inline Duct Fan 2020 Pick & Consumer Reports Guide
  • TerraBloom ECMF-200 wireless induct fan

The ECMF-200 model is designed with a dimension of 11 x 10.8 x 10.5 inches and an approximate weight of 6.96 pounds. It has an aerodynamic feature that actively drives air in an enclosed casing. With the required two lithium-ion batteries this model will work effectively for several hours, making it very durable and cost-effective.

This product has 6-adjustable speed levels – 15% for level 1 and 100% at level 6. The speed can be adjusted, with the super-sensitive remote control from as far as 50 feet range to suit the various requirements of its users. The cable of this unit is 6.5 feet long. This inline fan runs as noiseless as possible even at the highest speed level.

Screws and anchors added to this product helps make installation less expensive. The electricity requirement for this TerraBloom is 140 degrees Fahrenheit with 90% humidity level. For the best effective result follow the simple guides in the instructional manual that comes with the box.

What we like
  • Very durable
  • Noiseless during use
  • Easy to install and use
What we don’t
  • Uses negative energy


2. Ac Infinity Inline Duct Fan

This model acts as a heater, cooler, and humidity controller to give you the best output for its value making it a perfect buy for a ventilating room used for horticulture. Despite its super-strong features; the PWM control and EC motor, this motor operates at a whisper noise level. You can adjust and set this model using the smart remote control designed with it. The speed level of the fan, moisture, and temperature level can all be manually and automatically adjusted to any level you need for your plants at all seasons. It also comes with an eco-friendly mode, a water-resistant 12-foot tube, and an alarm system.

This model is designed with a double bearing ball that works at an optimal level. You can easily connect this model with others with the same controllers saving you the extra cost of using a single controller for each induct fan. This model has an inbuilt high dynamic pressure rating that makes this model very compatible with all space and size. It has a dimension of 14.88 x 11.26 x 10.71 inches and a weight of 7.08 pounds. The pack of this model also comes with an instructional manual for easy installation, use, and maintenance. 

What we like
  • Smart programming
  • Quiet motors
  • Very sensitive remote
What we don’t
  • Not durable


3. Vivosun Inline Duct Fan

Your plant needs to grow in cool, humid quiet green rooms; all the functions this model has been designed to perform. It has a variety of features that makes hydroponic very easy, rewarding, and less strenuous. It is lightweight for easy carriage; 5.14 pounds. The 12.5 x 9.1 x 8.9 inches’ dimension will perfectly fit into all green rooms.

It comes with double balanced blades that air supply and vent off exhume smoke. The lubricated motor runs very quiet at less than 31decibel and needs no further maintenance cost. The maximum electricity requirement is 110 degrees Fahrenheit. It has duct end and lock tabs you can easily install, remove, and maintain.

What we like
  • Very sturdy
  • Super effective
  • Balanced blades
What we don’t
  • Not durable


4. iPower GFLANXBOOSTER4 Inline Duct Fan

This model has a dimension of 6 x 5 x 5 inches and weighs 1.6 pounds considered lighter than other duct fans seen earlier. It is perfect for both domestic and hydroponic use. The unit comes with extremely sharp balance blades that help in boosting the air supply evenly. It requires 110-120V of electricity to run effectively for as long as possible. The motors have been lubricated from the factory saving you the stress and extra cost of frequent maintenance. The motors also work very noiselessly at less than 40decibel noise level. It runs at 100 cubic feet per minute airflow on 2930 RPM all these features help this model move a large amount of air without heating quickly and very effectively.

What we like
  • Effective fan blades
  • Super quiet
  • Great quality
What we don’t
  • Works ideally for small and medium-sized space only


5. Vivosun Inline Duct Fan

This model has a dimension 8.1 x 7.7 x 7.1 inches and a weight of 2.59 pounds a compact-sized design that will suit most wall space. The fan is highly effective with a 2500 revolution per minute for 195 CPM airflow. The airflow is further directed to the targeted location for the smooth development of the plants. It makes minimal noise at less than 30 decibels. You can easily install this model with the 6ft length cord and the instructional manual that comes with each pack. The energy supply requirement is 120V electricity. For a better and more comfortable setting, you can get a LED remote control with great sensors.

What we like
  • High CPM feature
  • Variable speed control
  • Very quiet
What we don’t
  • Not very durable


6. Fantech FR 100 Centrifugal Duct Fan

This Fantech is designed by the Fantech brand tested and trusted for their superior quality products globally. This model is made to be used for either residential or industrial purposes. You can easily use it with multiple rooms. It is designed to be extremely airtight, air cannot escape for optimal performance. It has a 122CFM with a150-650 airflow capacity and 4 inches’ diameter. The 5.1 pounds’ weight with 1.15 x 1.15 x 1-15 dimension is portable enough for most floor space.

What we like
  • Versatile features
  • Sturdy
  • Reliable and very quiet
What we don’t
  • Not durable


7. Pansonic FV20NLF1 Inline Duct Fan

This duct fan has a dimension of 13.39 x 9.45 x 9.45 inches and weighs 1.6 ounces. Designed with high-quality materials that make it very durable. It has a 240CFM airflow capacity. The zinc coating on the fan helps prevent corrosion and rust. Each pack comes with suspension brackets, duct of 6inches long, joist and truss all to make sure you do not have difficulties while installing your duct fan. The inbuilt motor designed with this model has been permanently lubricated; saves you the cost of maintenance. All these features make this model a multiple task ventilating function.

What we like
  • High-quality materials
  • Super quiet
  • Very effective
What we don’t

•        Poor design


Difference Between Duct Fans and Inline Duct Fans

Aside from the differences in their prices, the duct fans are less expensive than the inline duct fans. The other difference between a duct fan and an induct fan is quite easy to point out. The inline duct fan is considerably more powerful than the duct fans, while the inline duct fan moves 1500 CFM whereas the duct fan only affects the airflow at 800CFM. A duct fan uses low wattage energy of 96W than an inline duct fan that consumes up to 255W.

While the inline ducts are designed to ventilate large room space for better plant growth, the duct fans are designed to be used with either, carbonated filters and other tools to boost airflow.

The inline duct fan uses EC motors while the duct fan is designed to operate on AC motors as a result of the differences in their application set up, this makes the duct fans louder than the inline duct fans.

How to Pick the Best Inline Duct Fan?

  • Cubic feet per minute

Different models of inline duct fans are designed with a variety of features that makes them more effective than others, while choosing your duct fan, pay careful attention to the CPMs as this will have a relative effect on their performance. The volume of air requirements will be determined by comparing the location of the area geographically against the average duty level of that area.

  • Cost

The higher the performance of the induct fan, the more expensive it is. Pick an inline duct fan with the volume of the floor space you need it for. You can get an inline induct fan for as low as $19 and as high as $450.

  • Noise level

These fans are designed to work as quiet as possible. The fan you should consider buying for your green room or tent should be one that has the same noise level as the space requirement.

  • Location of the green room

The induct fans are designed to be used for rooftops, inside the walls and in a duct hole, choose a fan with easy to install and use features compatible you are placing it. 

  • Convenience

Inline duct fans are designed with various features that inalienable make installation, usage, and maintenance, carefully select the best one that you can comfortably work with.

How to Install an Inline Duct Fan

The procedures involved in installing an inline duct fan depends on the model. However, you can use these simple steps to install any model correctly after you have taken all the safety precaution tips provided in the manual;

  • Locate the duct space you need to have it installed and label the space with an arrowhead. The labeled arrow must be aligned in the direction of the airflow that is best for the green room.
  • Cut the same dimension of the inline duct fan in the duct opening.
  • Carefully support the fan motor and ensure the motor is not bent then place the inline duct fan in the opening.
  • Connect the springs and screws through the holes as indicated in the manual.
  • Cover up the holes with duct tape.
  • Secure the inline duct fan in the best position using the base plate of the unit.
  • Regularly clean up your fan for a durable life.

Frequently Asked

  • What is the quietest inline fan?

The TerraBloom´s silent range model is considered the quietest inline fan that gives less than 36-decibel noise level when in use.

  • What are inline fans used for?

Inline fans are used for both domestic use at bathrooms, basements and industrial green rooms to speed up plant growth and healthy development for the following;

  • Circulation of fresh air in rooms
  • Humidity level control
  • Refresh air quality at regular intervals
  • Ventilation and odor control
Conclusion & Recommendation

Inline ducts fan models are engineered by quality brands to be used for bathrooms, green rooms, basements, and for commercial purpose. The inbuilt features designed with them in ventilating rooms, control the temperature level, and direct the airflow while making minimal noise. These features can be customized to suit different event requirements of its users. They come with instructional guides for easy installation, usage, and maintenance. Models like the Centrifugal square inline fan IQS, Vivohome round exhaust inline duct fan, and the Vivosun inline duct ventilation fan are some of the top 10 best inline duct fan available which have been tested and trusted to give the most optimal result.