How to Find the Best Inline Duct Fan [2022 Picks] – Hon&Guan

How to Find the Best Inline Duct Fan [2022 Picks]

Inline duct fans are the most adaptable duct fans for use within duct construction for residential, commercial, and industrial applications. These fans are a good choice if you have a lot of room.

Here, In this article we will talk about the selection criteria and some other factors.

How to select best Inline duct fans:

The size of an inline duct fan can range from 4 inches to more than 40 inches. Most residential models have between 4 and 10 inches, but some are even bigger. We have fans that can be used with home heating and air conditioning systems in our selection.

Depending on how big they are, the maximum airflow they can get is different. Models that could produce more than 1000 CFM were not examined because they're used in many commercial settings.

An excellent price-performance ratio is what we look for when we choose inline duct fan models. It offers a wide range of models with many options and good performance at a reasonable price.


How are Inline duct fans and the duct fan boosters different:

The inline duct fan is the more powerful blower fan of the two. It moves the most air. Given the differences in technology and applications, 12-inch inline duct fans can provide up to 1500 CFM. However, duct fan boosters can power up to 800 CFM airflow with a 12-inch fan.

Inline duct fans remove heat and humidity from grow tents and rooms most of the time. It's also possible to find them behind closed doors where servers and AV equipment are kept safe. Many inline duct fans are used with flexible duct tubes and other things like silencers and carbon filters, making them less effective. Only duct fans that can move air can run normally and lose very little or no CFM. Duct fan boosters are often used in home heating and air-conditioning systems that need extra help with the airflow.

The Benefits of EC Motors

Unlike other types of fans that use AC or DC motors, most inline duct fans use EC (Electrically Communicated) motors, which combine the benefits of both AC and DC motors.

They run on an alternating current, but the way they're built looks more like a brushless DC motor with permanent magnets. In contrast, they use less energy than other fan motors, and have more power and torque than different fan motors.

When you buy inlet duct fans with electric motors, they're easy to set up because you don't have to deal with complicated wiring or AC adapters. They are controlled by an outside circuit board that lets you control the fan's power output at all times.

Common Inline Duct Fan Sizes:

Inline duct fans come in a different range of sizes that match the size of the ducts they are supposed to be used with. As a result, a 4-inch model will be much less potent than a 12-inch model, which will produce much less airflow volume than a 12-inch model.

The number of fan speeds they have should also be on your list of things to look at. If you buy a variable-speed model, you can slowly increase the fan speed and have complete control over the fan's airflow output. Variable-speed models let you do this.

The fan's static pressure: It depends on its size, and you need to make sure that it's the same as the pressure in the ducting.

Common applications of inline duct fans:

Inline duct fans are helpful in applications like these:

  1. The ventilation of wet areas like bathrooms, kitchens, and laundry rooms is essential.
  1. Remote fans for kitchen range hoods.
  1. Duct boosters for ventilation systems and clothes dryers, as well as other things.
  1. If you want to keep your whole house ventilated all the time, you should use supply or exhaust fans.
  1. Systems to reduce the amount of radon in the home

They come in many different shapes, sizes, and abilities to meet a wide range of ventilation needs. They come in single-port and multi-port versions, so you can choose the one that's right for you.

The Most Important Factors to Consider While Choosing an Inline Duct Fan

You should have no trouble finding an inline duct fan to add to your HVAC system because many alternatives exist. Besides the fan, you might also need other things to make the system run more efficiently and ensure the fan always has fresh air. So, let's look at some more things that can search for an inline duct fan to go faster and more quickly.


The 4-inch, 6-inch, and 12-inch sizes are some, that you can buy. An equation can help you figure out how big your grow tent or room should be. First, determine the cubic feet of the grow tent/room where the inline fan will be put. To do this, multiply the length, width, and height of the room/tent by that number.


Airflow is typically measured in (Cubic Feet per Minute), which is how much air the fan moves in a minute. This is actually the amount of air the fan can move in that particular time. If you know how big your tent is, you can choose the right CFM for an inline fan.


In general, no one likes noise, especially regarding appliances used in the home. It's common to see product descriptions for inline fans that truly describes the amount of noise the product produce. Make sure you check the noise level of the inline fan, before you buy one. If you set the fan speed too high, it will make more noise. Other than that, if you slow down the speed, the less noise it makes.


Automatic controllers are found on most inline air fans. This means that you can set the speed of your fan with them. It would help if you controlled the speed of the fan to keep the humming and the amount of air your plants get from the fan down.


There are a lot of cheap inline duct fans on the market, but there are also some that cost a lot of money. It would be best to choose what fits your budget and works well in your grow room or tent.

The advantages of Inline duct fans:

  1. Make the indoor air cleaner:

Putting inline duct fans in rooms like bathrooms or kitchens can make the air cleaner. People who live in rooms with an inline duct fan can get rid of things like bad smells in the toilet and stale air quickly.

  1. Remove the Bad Smell:

Even if the smell comes from a room that doesn't get a lot of air, like the bathroom, people think the room is very dirty, which makes them not want to go in.

  1. Removes Air Moisture:

A room that is too humid makes the air smelly and stale, making it hard to breathe. As long as it doesn't get dry enough, it could damage the walls and ceiling of your house. Moss and fungus can grow in even the tiniest parts of a room. This is why it is vital to get rid of these things quickly.

  1. Make the air cleaner:

Cooking smoke, cigarette smoke, hot air, and unpleasant odors are terrible for your lungs. Then, too, if the air is dangerous and can cause sickness if breathed in for long. Clean air must always be present in the house to make everyone feel at ease.

  1. As an air conditioner:

Inline duct fans can also cool the air in a room by moving it through them. These actions are all based on how the inline duct fan works. The fan takes the hot air from the room and moves it outside. Then, it brings in a new perspective so that the room is cooler afterward.

Disadvantages of Inline duct Fan

Many inline duct fans on the market use power in the form of electricity, so if there is no static electricity, the fan won't work.

The sound of the fans:

Despite the fact that they are powered by EC motors, which are significantly quieter than AC or DC motors, inline duct fans still generate a significant amount of noise. When operating at full capacity, these devices generate an average noise level of between 40dB and 60dB in the surrounding environment.


This article has thoroughly talked about inline duct fans, their working, performance, sizes, and other aspects. Inline duct fans are known for their characteristics of removing dirty air and making the air clear. To keep things cool, we can use it as an air conditioner. Heat and humidity are removed from growing areas by inline duct fans most of the time.

They can also be found behind closed doors, where servers and AV equipment are protected. With the addition of things like silencers and carbon filters, many inline duct fans are less effective. Only air-moving duct fans can reliably operate at optimal efficiency while consuming little or no CFM.



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