Search  for anything...
VIVOSUN

VIVOSUN Inline Booster Duct Fan 8” 430 CFM with Speed Controller, HVAC Exhaust Ventilation Fan with Low Noise for Basements, Bathrooms, Kitchens, Attics, Grow Tents

Based on 886 reviews
Condition: New
Checking for inventory...

Notify me when this product is back in stock

$35.99
Save $31.34 was $67.33

Buy Now, Pay Later

As low as $8 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Unavailable
Fulfilled by Amazon

Available payment plans shown during checkout

Recently Viewed

At a glance

Condition
New
Style
Adjustable Speed
Size
8”
Model
VSV-IFB8
Dimensions
7.9"D x 7.9"W x 7.2"H
Color
Black
Material
Metal
In the box
Inline Duct Fan with Speed Controller

Features 6

  • Durable: The fan has a strong motor which features a permanently lubricated bearing that operates quietly and requires no maintenance; The quality steel housing makes it sturdy and built to last
  • Adjustable Speed: A variable speed controller on the power cord enables the fan to run at different speeds; With this speed switch, you can adjust it to the desired airflow level
  • Compact But Efficient: This duct fan is compact and lightweight enough to be installed in areas with little available space; With a diameter of 8 inches, speed of 3000 RPM and 430 CFM airflow
  • Low Noise: Superior balanced centrifugal impeller for long service life & quiet operation; A less than 43 dB noise level does not have any harm and will not disturb your life

Description

  • Durable: The fan has a strong motor which features a permanently lubricated bearing that operates quietly and requires no maintenance; The quality steel housing makes it sturdy and built to last
  • Adjustable Speed: A variable speed controller on the power cord enables the fan to run at different speeds; With this speed switch, you can adjust it to the desired airflow level
  • Compact But Efficient: This duct fan is compact and lightweight enough to be installed in areas with little available space; With a diameter of 8 inches, speed of 3000 RPM and 430 CFM airflow
  • Low Noise: Superior balanced centrifugal impeller for long service life & quiet operation; A less than 43 dB noise level does not have any harm and will not disturb your life
  • Wide Applications: You can have it in bathrooms, kitchens, workshops, basements, attics and etc, in order to boost airflow in HVAC systems; Also, it can be used in grow rooms as intake fans or exhaust fan

Specs 36

Brand VIVOSUN
Color Black
Electric fan design Exhaust Fan
Power Source ac
Style Adjustable Speed
Product Dimensions 7.9"D x 7.9"W x 7.2"H
Room Type Bathroom
Special Feature Low Noise

Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

An absolute must have for auto cooling
Style: Adjustable Speed Size: 4”
Very happy with this product. I installed it into a green house connected to a thermostat and ran the supply off of a HVAC leg. With the air hepa filtered on the unit and the house temp at a constant 70/71, when it calls for cooling the fan pulls that extra air in with the adjustable speed and power to move cool air in. Easy to install, works great, and Vivosun Quality as always. ... show more
Reviewed in the United States on September 3, 2025 by Reviewer
This Is worth it in every aspect
Style: Adjustable Speed Size: 4”
This exhaust fan works great. I have had it and tested it for over a month now. It is very quiet, I wish bathroom motors were this quiet, next the power dial also controls the speed of the fan. the fan speed is completely adjustable this is a HUGE bonus. Most air duct exhaust fans are either on or off, this one has fan speed control. It hooks up pretty easy the length of the cord is about 6 feet which is good. The on off switch is the dial, so the only negative is the switch position. I wish the switch was closer to the outlet and further away from the actual inline booster module. ... show more
Reviewed in the United States on October 16, 2023 by Miamipeeps
Works well
Style: Adjustable Speed Size: 8”
Works well, wish the fan speed went a bit lower for my needs but overall a great duct fan
Reviewed in the United States on May 3, 2026 by Gareth
Great fan!
Style: Adjustable Speed Size: 4”
Awesome little inline fan. Used two years so far without an issue
Reviewed in the United States on April 14, 2026 by wayne g greenway
For the price price it’s solida
Style: Adjustable Speed Size: 4”
I live in a high moisture state so I have very high humidity and I have a small tent that’s about 3 x 2 1/2 x 5 1/2‘ and this little fan was not enough to completely manage this tent, but it did cool the tent off by itself Wasn’t strong enough so I ended up buying a viva sun in-line fan instead of returning this little fan I kept it and now I use it as a nonpassive when needed and that it works perfectly it’s light so I literally installed it directly in the vent of the temp since I have two clamping sites on the temp and hold it perfect and That’s it 2426 bucks totally worth it, but I would say don’t think it will be your final solution if you live in a humid climate ... show more
Reviewed in the United States on July 30, 2024 by Oceee
Only lasted 9 months, with 3 months of use
Style: Adjustable Speed Size: 8”
Has not even lasted a year. It was only being used for a few months in the summer/ fall. Only running periodically. Now it won't spin. There is power, but the motor has died.
Reviewed in the United States on April 5, 2026 by Michael S.
Great IN-Line fan!
Style: Adjustable Speed Size: 4”
Vivosun is a great company to deal with. Awesome customer support. I installed this in my dryer exhaust line and it has sped up my dry time. Fan runs quiet and every efficient. Can’t go wrong with this product.
Reviewed in the United States on October 8, 2025 by Mike S.
Noisier than I expected, even at the lowest setting.
Style: Adjustable Speed Size: 8”
I bought this to improve airflow between my basement and main floor, but I found that it was too noisy, even on the lowest setting. I know it gave the decibel rating, but it's hard to know just how noisy that is in real life. I couldn't talk over the noise this fan put off. If you're using it in a duct that is far away from living areas, it might be just fine. ... show more
Reviewed in the United States on January 23, 2026 by Cassandra Darling
How it works
Checking for inventory...