The 8 Best Inline Vent Fans

Updated June 30, 2017 by Christopher Thomas

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Whether your house is constantly too warm or too humid for comfort, your grow room is generating too much moisture, or your bathroom gets overly steamy, one of these inline vent fans can provide the ideal solution to a hot, wet environment. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best inline vent fan on Amazon.

8. VenTech IF4

The VenTech IF4 only moves 190 cubic feet of air per minute, which is less than many units in the category, but it costs less than most models, too. Reliable customer support from its manufacturer should reassure you that it's a quality, well-made choice for a crawlspace.
  • exterior powder-coating resists wear
  • not suitable for large operations
  • some units rattle loudly
Brand VenTech
Model VT IF-4
Weight 8.1 pounds
Rating 4.0 / 5.0

7. TerraBloom 8-Inch

A very low price and a simple construction make the TerraBloom 8-Inch a cost-effective and powerful solution for flushing hot, wet air from a busy grow tent. Being lightweight and coming with a 5-1/2-foot long cable means one or more of these can be installed with ease.
  • draws an efficient 48 watts
  • backed by one year warranty
  • build quality can be inconsistent
Brand TerraBloom
Model pending
Weight 1.7 pounds
Rating 4.7 / 5.0

6. Virtual Sun VS800F

Boasting the highest CFM of all the 8" fans reviewed, the Virtual Sun VS800F can purge the air from a house or keep even the fullest grow room or biggest generator cool. High performance comes with a cost, though, as this unit draws as many as 176 watts.
  • wide steel bracket for easy install
  • pricier than most high-cfm options
  • very loud at full speed
Brand Virtual Sun
Model pending
Weight 14.3 pounds
Rating 3.8 / 5.0

5. Fantech FR160

A quiet and reliable option from one of the leaders in duct equipment, the Fantech FR160 provides 290 CFM of air movement and is made with professional-quality craftsmanship to keep your house fresh and dry and the bathroom odor-free.
  • perfect for radon mitigation systems
  • horizontal or vertical installation
  • metal mounting bracket included
Brand Fantech
Model FR160
Weight 7.6 pounds
Rating 4.0 / 5.0

4. Apollo Horticulture

Unlike most offerings, the Apollo Horticulture features an integrated, variable speed controller that makes it easy to customize the airflow of the unit. Pushing nearly 400 CFM, this option adds a measure of dry, fresh air to any stuffy or smelly room.
  • quickly removes moisture and fumes
  • plastic fan and housing
  • not designed for quiet operation
Brand Apollo Horticulture
Model pending
Weight 6.6 pounds
Rating 4.4 / 5.0

3. Tjernlund M-6

A powerful, high-CFM booster, the Tjernlund M-6 is a great choice for ventilating either a home or a burgeoning growing operation. It can safely draw off the heat, moisture, and particulate matter associated with a roomful of healthy plants.
  • quickly evacuates air at 460 cfm
  • also available in 8-in model
  • works best with a speed controller
Brand Tjernlund
Model M-6
Weight 13.5 pounds
Rating 4.5 / 5.0

2. Panasonic WhisperLine

A perfect replacement for old and noisy hardware, the Panasonic WhisperLine lives up to its name by silently preventing your shower from becoming a sauna. Increasing the efficiency of both heating and cooling, this is an energy-conscious upgrade to any home.
  • designed for use with 4-in filters
  • install in five possible alignments
  • galvanized steel body resists rust
Brand Panasonic
Model FV-10NLF1E
Weight 18.4 pounds
Rating 4.7 / 5.0


In sizes ranging from 4 to 12 inches, the iPower GLFANXINLINE boasts some of the highest CFM ratings in its field. Its various models are ideal for cycling moisture-laden air out of bathrooms, grow tents, or entire residences.
  • long-lasting ceramic coating
  • maintenance-free fan bearing
  • 5-foot power cable
Model pending
Weight pending
Rating 4.7 / 5.0

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Last updated on June 30, 2017 by Christopher Thomas

A traveling chef, musician, and student of the English language, Chris can be found promoting facts and perfect copy around the globe, from dense urban centers to remote mountaintops. In his free time he revels in dispelling pseudoscience, while at night he dreams of modern technology, world peace, and the Oxford comma.

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