What Is an Inline Extractor Fan

What Is an Inline Extractor Fan

What Is an Inline Extractor Fan

Inline extractor fans are an alternative kind of extractor fan. Though they provide the same function, they differ in some key areas to a traditional extractor fan. With that being said, are they limited to certain areas? Are they better than a normal extractor fan? We will answer all of that, and more.

In this blog, we will provide answers to the question ‘What is an inline extractor fan?’

With new buildings being made to be as energy efficient as possible, and the UK aiming for 95% of its electricity usage to be low carbon by 2030, it is imperative to understand how we can make the most of our ventilation. This is where applications such as extractor fans and heat recovery ventilation units come in.

To prevent mould, fresh air should constantly be introduced into your dwelling daily, as it helps to regulate temperature and reduce condensation. Introducing fresh air can be as simple as having a ventilation routine, or installing extractors or MVHR units. Almost all of this is facilitated by ducting.

Does using an extractor fan make ventilation better?

Does using an extractor fan make ventilation better?

Yes. Absolutely, extractor fans can be a defining factor in any ventilation routine. Extractor fans are a ventilation appliance that works by extracting excess humid air, smells and stale air.

Certain extractor fans have sensors which can detect the humidity in the room it is installed in, and can continue working until the humidity level goes below the threshold. However, you can expedite the extraction process by opening a window during the usage of your extractor fan.

For example, if you shower with a window closed, steam will quickly fill the room, by using an extractor fan, you will be able to extract the steam, though it will take some time.

By opening a window during this process, you give the steam a clear and quick exit, whilst also allowing fresh air to enter the room. As a result, the bathroom will be back to normal in a much quicker timeframe than if you didn’t use an extractor with an open window.

What is a ventilation routine?

A ventilation routine may seem self-explanatory, but what exactly does one look like? A ventilation routine doesn’t have to be anything extensive or intricate, it can be as simple as opening windows for a certain amount of time on a daily basis.

The best way to do this is to open windows on both sides of the home, and both levels if you don’t live in a bungalow or flat, this creates a clear passage for air to travel through. Having this passage of air allows excess humidity, stale air and smells a chance to circulate out of the home.

Using an extractor fan isn’t exactly part of a ventilation routine, though it will help to ensure that certain rooms are correctly ventilated with little to no chance of mould becoming condensation. Either way, you should ensure you use your extractor fan, and have a ventilation routine.

What is an inline extractor fan?

What is an inline extractor fan?

An inline extractor fan is a ventilation application similar to your traditional extractor fan. Like a traditional extractor fan, the inline variant is designed to remove unwanted air, moisture, and odours. However, one of the key differences is where it is installed.

Inline extractor fans are installed within a duct network, as opposed to being mounted directly on walls or ceilings. Inline extractor fans have the potential to be invisible in terms of installation.

Below, we will highlight the key features of the inline extractor fan.

Unique installation

As mentioned previously, an inline extractor fan is installed within a duct network. They connect to air ducts at two points. The first is for intake, while the remaining point is for exhaust.

As a result of the unique installation area, the fan itself is quite discrete, with the vents usually being the only visible part in the room or externally.

Enhanced functionality

Inline extractor fans, in most cases, are more powerful than a traditional extractor fan, this can be extremely beneficial to high-moisture areas like bathrooms or kitchens. Due to the design of the inline fan, it allows for an efficient airflow, even through longer ducts that have bends in them.

Traditional extractor fans can suffer in terms of functionality and efficiency if they are contending with ducts that have multiple bends.

Benefits of an inline extractor fan

  • Improved moisture control: Due to the effectiveness of its installation area, and the design of the appliance itself, it helps to prevent mould in a more efficient manner.
  • Because the fan is located outside the room, within a duct, they can typically be a lot quieter than your traditionally exposed extractor fan.
  • Because of the flexibility within the design, the inline fan provides more options for those opting for a unique design in their bathroom, kitchen or other room.

Where can I install an inline extractor fan?

Like its traditional counterpart, you can install an inline extractor fan in bathrooms and kitchens, as well as laundry rooms and loft conversions. Outside personal spaces, they have the ability to be installed within restaurants, workshops, salons, and many more commercial spaces.

Can an inline extractor fan kill mould?

No. Once mould has appeared in your home, increasing the level of ventilation will not remove the mould, it will only hasten its spread. To remove mould, you must use mould removal products such as a mould surface cleaner.

Once the mould is removed, ensuring your ventilation is of a good standard will prevent the return of the mould. That being said, mould does not always occur as a result of humidity and moisture that isn’t ventilated. It can also occur as a result of unaddressed leaks.

Can I live with mould?

It is possible for someone to live amongst mould, but that does not mean that it should be tolerated or encouraged whatsoever. Mould is dangerous, it has the potential to seriously damage your health, especially if you have existing health conditions.

Here are some signs that mould could be impacting you. It is more relevant if you didn’t have any of these issue until you had extended periods amongst mould.

  • Hair thinning/ hair loss.
  • Weaker immune system, more obvious if you go from rarely being ill to regularly being ill.
  • A lingering cough.
  • Unexpected skin rashes.
  • A lack of vitality.
  • Breathing that is slightly more laboured than usual.
  • Breathing in the outdoors is more comfortable, than breathing in the home with mould.
  • Regular or increased instances of having phlegm in your throat without any illness or contaminants that affect your lungs, such as cigarettes.

These are just a handful of symptoms you can experience with mould allergies.

Buy an inline extractor fan today

Buy an inline extractor fan today

At I-Sells, all things ventilation and ducting related is our speciality, we are here to answer the questions we know are common for those new to HVAC and what it encompasses.


We at I-Sells endeavour to ensure our customers have all the information they require before investing in our mould solutions. Be sure to visit our blog page to learn about the vast array of factors and issues surrounding ventilation, mould, condensation, and much more.

Within this blog, we hope to have shown you have answered the question, ‘What is an inline extractor fan?’ Whilst providing you with supplementary information to help you, moving forward.

We understand you may have more questions, do not hesitate to contact us for more information about whatever you require our help with. If you’d like to email us, click here. For other contact options, see below:



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