Top 10 Dryer Booster Fan Reviews 2020

Written by Alwin Sander |Update March 5th, 2020

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A dryer booster fan works by boosting airflow through the duct of your dryer. It will result in less lint back up and can significantly reduce the amount of time it takes you to dry your clothes, up to 50%. It’s also an essential tool for anyone who can’t set up a dryer next to an external wall and has to install longer dryer ducts.

The longer ducts offer more resistance and limit the dryer’s performance, and experts suggest getting a dryer booster fan if you’ve connected the dryer to a 25-foot or longer straight duct. The number can be anywhere from 15-20 feet if there are one or more bends involved.

That’s why dryer booster fans are recommended in apartments and condos with concrete firewalls. Now that we’ve covered why they are important and when you need one, here is our list of the best dryer vent booster fans.


Top Pick
  • Systemair/Fantech DBF 110
  • Airflow: 167 CFM
  • Duct Opening Size: 4 Inch
  • Power: 65W
  • AC Infinity CLOUDLINE T6
  • Airflow: 205 CFM
  • Duct Opening Size: 4 Inch
  • Power: 29W
  • Tjernlund M-4 Duct Fan
  • Airflow: 200 CFM
  • Duct Opening Size: 4 Inch
  • Power: 100W
  • AC Infinity CLOUDLINE T4
  • Airflow: 205 CFM
  • Duct Opening Size: 4 Inch
  • Power: 29W
  • VIVOSUN 4 inch Inline Fan
  • Airflow: 100 CFM
  • Duct Opening Size: 4 Inch
  • Power: 12W

10 Best Dryer Booster Fan Reviews

Check out these fantastic dryer booster fans

Fantech DBF 110 Dryer Booster Fan - Editor Pick

Fantech has been dealing with HVAC safety and improvement products for quite a long time.

The dryer booster fan is pretty easy to install and replace and comes with screws and mounting setup, and you can set it up yourself without too much effort.

If you haven’t done this before and you’re not the DIY type, your best bet would be contracting a handyman to do it for you. The Fantech DBF 110 is activated by the pressure that runs within the exhaust tube and is compliant with all sorts of dryers, including gas.

There are numerous applications for this dryer booster fan, and it has a lot of positive reviews.

It’s also free of lint traps, and it doesn’t require one unless it’s placed over 25 feet away from the main dryer system. The whole system is high-quality and very durable.

Pros and highlights

  • Reasonable price
  • Lint trap free
  • Compatible with numerous HVAC systems
  • High air velocity

Cons and potential flaws

  • Shipping fees
  • Odd switch settings


AC Infinity CLOUDLINE T6 Exhaust Fan

AC has been dealing with HVAC issues for a long time and is a leading innovative company in the field of HVAC optimization and inline fan production.

This 6” smart dryer duct booster fan is designed to ventilate hydroponic grow rooms, as well as regulate cooling and heating through optimized air circulation.

The smart part of this inline dryer vent fan is in its controls. There is an integrated microchip computer that regulates control over the overall system, and it comes with an intelligent controller that features an advanced program and the following functions.

The complete kit comes with the unit, the controller, and all the necessary installation tools. Even if the system is far more advanced than most of its competition, it still features the same basic functionality.

One of the most significant issues when it comes to inline duct fans is the noise that they produce during their operation. The AC infinity T6 promises to eliminate this noise, and the airflow comes in at 351 CFM.

The whole system is not only smart but energy-efficient as well. Switching on and off depending on the preset values of the system, it’s fully automatic and works to save power while providing a much-needed service.

The main issue is that the unit often arrives banged up because it is not properly packaged to protect it during shipping. The LCD screen can also be finicky or flat out die within a couple of weeks in some cases. You can exchange it for a new one easily enough, but it’s an added hassle that no one needs.

Pros and highlights

  • Advanced smart system
  • Automatic
  • Silent
  • Energy-efficient
  • Comes with carbon filter

Cons and potential flaws

  • Poor temperature control
  • The LCD screen may have some issues out of the box
  • The unit can get damaged during shipping as it’s not properly packaged


Tjernlund Metal Inline Duct Fan

When it comes to HVAC systems and inline duct fans, Tjernlund is the most popular option. The company has been manufacturing different HVAC system components for a long time, and it has an overwhelmingly positive review score.

It features a high-pressure air handling performance with low noise and low power usage. The only thing you need to worry about is plugging the fan cord into the wireless control, and connecting the whole contraption into the outlet.

It could use an extra inch of lip length to help hold the output duct in position. As it is, the unit can be difficult to secure and you might need to check it from time to time to see if it’s still firmly in place.

The package includes all the installation tools, such as the fan, the vibration isolating foam, and the standard power cord. The series comes with four different sizes to fit a variety of ducts.

Pros and highlights

  • High quality
  • Long working life
  • Low power usage
  • Comes in 4 sizes

Cons and potential flaws

  • Complicated installation
  • Low monitoring properties
  • Can be difficult to secure firmly


AC Infinity CLOUDLINE T4 Inline Duct Fan

This is the second AC Infinity T series on this list, a valuable and reasonably priced option when you want to purchase a smart dryer fan system. This variation is 4”.

It’s a smart inline dryer vent fan that comes with a pretty advanced controller, which can be programmed to adjust and fully customize fan speeds to respond to a variety of factors, such as temperature and humidity.

It has excellent temperature management, with an airflow of 205 CFM, making it ideal for smaller rooms. For ventilation purposes, the controller could be programmed to run continuously or triggered to run at set speeds when given power. This dryer vent assist fan can also remember your settings the next time you plan on using it.

The CLOUDLINE T4 includes a countdown timer to operation, an advanced and high-security alarm system, and eco-friendly mode.

The eco-friendly function offers minimal power consumption, but it also controls the amount of air that is being replenished by the inline dryer booster fan. It’s also very quiet and is immune to water and other forms of liquids, dust, and other contaminants.

The main issue with it is that the quietness and compactness come at a cost – it’s relatively weak compared to most other options on this list.

Pros and highlights

  • Powerful
  • Easy installation and programming
  • Lint resistant
  • Advanced smart features

Cons and potential flaws

  • Relatively weak
  • A bit too small
  • Quite pricey for what you get


VIVOSUN Inline HVAC Booster Fan

VIVOSUN is a famous hydroponics manufacturer and produces all sorts of HVAC units and HVAC unit support appliances. The VIVOSUN Inline Duct fan comes in four different sizes, all used for different things.

It has numerous household applications – it serves as an exhaust booster fan, removing moisture, stale air, and odors from homes.

A big problem in most houses is that moisture tends to linger around the longest in attics and basements, and it’s where most people have their dryers. This is why the small 4” inline duct fan has built-in temperature control, made to reduce the moisture in the air, providing for a pleasant environment.

Apart from dryer ducts, it can also be used in grow rooms, if you are growing any sort of plant in your house. TIt uses a tiny amount of power, making it a cheap long-term option.

The only real problem that comes with this product is its relatively weak airflow capacity, coming in at only a simple 100CFM for the 4” variation. This might be a problem for its small size, but it makes it quieter, more power-efficient, and great for tight spaces.

Pros and highlights

  • Eco-friendly
  • Extremely quiet
  • Compact and fits tiny spaces
  • Comes in multiple sizes

Cons and potential flaws

  • A bit on the weaker side
  • Lint trap requirement


Fantech Systemair Dryer Booster Fan & Kit

Systemair is a subsidiary firm of Fantech, the previous addition on our list. It’s a solid booster fan produced by popular a dryer booster company.

The DBF 4XL features a powerful FX4XL fan with a housing made of galvanized steel, ensuring the quality and durability of this product.

In most cases, there is a high demand for dryer booster fans due to their habit of breaking after a few months, but you won’t have such issues with this product.

It’s a powerful tool that can handle up to 60 feet in duct length. The control system is also pretty advanced and automatically operates the dryer booster fan whenever the dryer system is running.

When the dryer turns on, the fan is automatically activated by the pressure-sensitive switch that senses warmth and moisture — ensuring that both are expelled from the area your dryer is located in.

It can be a little too sensitive when detecting air pressure change and can be switched on by a strong wind blowing into the ducts or when a heater fan is turned on. The real issue is that’s it’s difficult to turn down the sensitivity – you have to remove and re-position the entire dryer booster.

Pros and highlights

  • Very powerful blades
  • Strong, durable stainless steel construction
  • Automatic controls
  • Service and money-back policy

Cons and potential flaws

  • A bit heavy and difficult to install
  • It can get quite loud
  • Difficult to reduce sensitivity
  • It’s one of the more expensive options


Hydroplanet 4 Inch Duct Booster Fan

Hydroplanet is a hydroponics optimization firm and all the products that this company offers are tried and tested. Most importantly, they come with a two-year warranty for repairs and a money-back guarantee.

The Hydroplanet booster fan solves numerous airflow issues in your smaller spaces and is fairly easy to install. Sometimes, the biggest problem people face is replacing their existing duct fan with a dryer booster fan. The process can be pretty straining and leaves some space for human error.

This is not a problem with the Hydroplane 4-inch duct booster fan due to its robust design, high airflow for its size and low power consumption, and it’s simple user-friendly design.

This is one of the dryer booster fans you can install yourself without any expensive reworks or replacements.

It does require a lint tray, and only exerts a modest 65 to 100 CFM for airflow, but this is what makes it so quiet and pleasant to use. It’s also resistant to moisture and water, making it an excellent option for basements.

This may be too weak for some people, especially if you intend to do a lot of washing and drying on the weekend and don’t have much time to waste.

Pros and highlights

  • Lightweight design and easy to install
  • Moisture removal
  • Incredibly quiet

Cons and potential flaws

  • Very low CFM limits its usefulness
  • A little too weak and prone to malfunctions


Tjernlund M-49504351 Dryer Duct Booster Fan

This inline fan is a powerful addition to any serious HVAC system, ensuring powerful air regulation and temperature control. This is a powerful duct booster that is equipped with a current sensing switch, programmed to go off once your dryer starts up.

It’s fully automatic – all that you need to do is install it and plug it into an outlet. When the booster fan senses that the temperature and airflow have changed, it will automatically turn on and work to increase the speed of drying, and decrease drying times for heavier laundry such as towels and blankets.

The M-49504351 boosts the speed at which the air flows through the ducts, trapping any possible lint within a lint trap. Lint traps, often called lint eaters, aren’t expensive, and they are a powerful addition to all dryer vent systems.

You’ll need to purchase one separately, but adding a lint trap to your dryer system can not only decrease lint buildup but save the whole system from serious damage – if the lint dries out and is exposed to heat, it can be a fire hazard.

This inline dryer booster fan is a powerful tool, exerting 200CFM at only 4” in size. It’s also priced accordingly, so expect to pay more than for similar options.

Pros and highlights

  • Small
  • Extremely powerful
  • Lint repellent
  • High CFM
  • Pleasurable warranty

Cons and potential flaws

  • Expensive
  • Requires lint trap
  • The current sensor can often malfunction


Power GLFANXINLINE4 Inline Duct Ventilation Fan

It might have "i" in the name, but it’s not an Apple product. This, four-inch air duct booster fan is a great addition to any bathroom, workshop, and studio in your home. It’s a small appliance with little power, but great versatility in smaller places.

It fits any standard household plug and comes with a five feet power cord. Installing it requires only some simple duct knowledge.

The iPower GLFANXINLINE4 is made out of stainless steel, providing for a high quality and durable shell. It’s also fairly quiet, all the while exerting 190 CFM of airflow power. The noise it produces is reportedly around 48dB, offering for a silent and pleasant experience.

It comes with a control switch that is designed to start every time you start up your dryer system. The unit is double-ceramic coated for further quality assurance and protection and helps remove heat from the system, thus preventing a potential fire. It also comes with a full one year warranty.

There might be some problems with quality control at the factory, as some units arrive with minor damage, fans that start making a loud noise, or you might get a unit that simply tends to overheat.

Be sure to test out your dryer booster fan as soon as you get it, and replace it immediately if there are any issues with it, and you’ll be fine.

Pros and highlights

  • Small, yet powerful
  • Effective at filtering out odors
  • Adjustable speed settings

Cons and potential flaws

  • Not eco-friendly
  • Power consuming
  • Issues with quality control at the factory


Tjernlund DBM4 Duct Booster Fan

The DBM4 Duct Booster Fan is the third Tjernlund product on this list, and for a good reason. It’s made of 24 gauge galvanized steel. This is a significant step up to the competition, as most companies don’t use the same grade of steel and they sometimes make the entire unit out of plastic.

With this model, you get an electronic connection box, riveted to the outside of the unit. The motor is nothing to scoff at, exerting 143 watts of power. It’s fairly powerful, and the whole system runs smoothly, but it can get a bit noisy.

As an axial fan, it’s bound to have some difficulty working under a high static pressure, which is why some units can get a bit noisy and cause plenty of vibrations. You can get a speed control unit to help limit the vibrations, which means more money out of your pocket.

The installation of this duct system is pretty simple, but the unit is a bit heavy. You might want to leave the installation to a professional handyman.

It comes with instructions to program the dryer booster fan to fit your specific needs – more moisture, more heat, you can set it up however you want. However, this model requires a lint trap to operate correctly, and you’ll have to buy it separately.

All in all, the DBM4 dryer exhaust booster fan is a powerful and reliable tool, but it can be a bit loud.

Pros and highlights

  • Decent amount of power
  • Gas compliant
  • Easy to program
  • Low power consumption
  • Sturdy all-steel construction

Cons and potential flaws

  • Requires lint trap
  • Can get noisy and vibrate a lot
  • You might need to get a separate speed control unit
  • A bit pricey


How Dryer Booster Fans Enhance Air Flow in Dryer Vents?

Enhancing airflow within your dryer vents is extremely important. It can not only improve the quality of your air, but it can also dry out the moisture, reducing the number of bacteria and allergens located in your HVAC system.

Having a proper dryer booster fan is integral to maintaining the well being of your HVAC system and your dryer. A huge problem when it comes to dryer ducts is lint buildup. This lint can later accumulate moisture, and in turn, cause a whole lot of problems.

The main problem that occurs when there is a lint and moisture buildup in your air ducts is mold. It will make your airflow system smell horrible, and it will also be a hub for numerous airborne diseases.

Dryer booster fans help the air duct system by boosting airflow through the dryer duct. They can be switched on or off via a switch, time switch, or a current sensing relay.

When the system determines that the airflow is not sufficient, it automatically turns on to resolve this issue. Allowing proper fanning through the system is not only the more pleasant option, but it’s also the only safe option.

Where you place your dryer booster fan will depend on your home layout and where you’ve decided to place your dryer.

Installing your own dryer booster fan is not always an easy task. It really depends on what you have to work with. What is the piping like? Where can you place the dryer booster vent? Is there any additional space?

Well, the recommended amount of space you should have between your dryer and dryer booster fan is about 10 feet. It’s best to skip or replace PVC piping, as it doesn’t really work well with a dryer booster fan.

Frequently Asked Questions- FAQ

1How do I install a dryer booster fan?
It’s far from complicated, and the whole process usually takes anywhere between 10 minutes to half an hour. Although, if you haven’t worked with similar things in the past, you could make an error, which might cost you some extra time.

If you’re not the handy type, we recommend soliciting the services of a professional to install your dryer booster fan for you. If you insist on doing it yourself, we’ve found you a fantastic guide.
2Where do I install a dryer booster fan; what’s the optimal location?
The booster fan sas to be positioned at least 15 feet away from the outlet. Ideally, you’d want it near the end of your ducts – in a place where you can reach it easily when performing regular maintenance.
3Can I use a simple bag to catch all the lint that builds up beneath the filter?
While a basic lint bag will work just fine for collecting lint from shorter dryer ducts, you shouldn’t use it when you have a booster fan. The fan promotes more airflow which could dislodge the lint, and dry lint coming in contact with a hot fan can present a fire hazard.

It’s best to install a lint bag with ridges if you’re using a booster fan.
4Do I need a lint trap?
This depends on the rest of your airflow system. If you have placed your dryer booster fan more than 15 feet from the main unit, you might need a lint trap. Lint is an unavoidable thing when it comes to the airflow system.

Trapping it within a lint trap will not only improve the quality of the air circulating in your ducts but will improve the longevity and durability of your HVAC system. Not to mention that lint tends to get moist, which can cause a wide array of problems, including mold buildup.
5Is it safe to run a single speed booster fan with multiple dryers if not all of them are turned on?
This can present an issue, as the airflow that the booster fan can muster is calibrated based on the volume of air that all the dryers combined can handle. The best solution is to go with an airflow optimizer. A cheaper and easier solution is to add a barometric damper a bit below the fan.
6Why do dryer booster fans with airflow optimizer sometimes stay off even though the dryer is on?
This happens for a simple reason – the airflow optimizer is doing a fine job of keeping the back-pressure at a lower level, and the booster fan only kicks in if the pressure gets to a certain pre-set level.
Anyone with long dryer ducts, be they straight or with multiple 90 degrees bend, needs a dryer duct booster fan. It will help your dryer work more effectively, usually drying out your clothes about 2-3 times faster than without one.

When used with a lint trap, it also helps catch any loose lint, all while reducing moisture buildup in areas like basements – a common location for a dryer. All the options on this list have been tested by thousands of Amazon customers, and there’s something for everyone.

Whether you are looking for a big powerful dryer exhaust booster fan, something small and quiet, or a high-tech option with useful settings like speed control, you’ll find it here. There’s also something to fit everyone’s budget, so go over the list multiple times and decide on the best option for you.

Last updated on March 5th, 2020 at 05:46 am

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