Best Extractor Fan For Bathroom Without Window in 2023

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Bathrooms are damp, and naturally one of the most humid spaces in your house. Most of it can be attributed to showers as the water naturally evaporates into the air. Without a window, all that humidity stays trapped inside. It can make it pretty uncomfortable (and sometimes, virtually impossible) to breathe, and it’s very damaging to the porous nature of the paint and drywall inside your bathroom.

Once the air cools down, all those trapped vapours turn back into the water, encouraging mould and fungal growth to take place. Over the long run, these issues can not only cost you a hefty amount of money in repair costs, but also a bunch of allergies and health problems.

Quick Glance (See on Amazon):

  1. MOST POWERFUL FAN: Manrose MF100T
  2. MOST POPULAR FAN: Manrose MF100T
  3. CHEAPEST FAN: Knightsbridge EX004T
  4. QUIETEST FAN: Xpelair C4TS

If you have a windowless bathroom, it would be best to install an extractor fan into it as soon as possible. It can suck away all the built-up moisture inside your bathroom, driving it all away from the atmosphere in a matter of minutes. You’ll notice the benefits right away, including complete odour control, prevention of mould growth, and little to no rusting or paint peeling (aside from the already-damaged parts).

In this article, we’ve made a list of six of what we believe are the best extractor fans for bathrooms without windows. There’s also a complete buyer’s guide at the end to help you make the right choice, so keep reading!

Top Three Best Extractor Fans For Bathrooms Without Windows

Our Best Extractor Fan for Windowless Bathroom Picks

1) Manrose MF100T In-duct Extractor Fan with Timer

Manrose MF100T Mixed-Flo Inline Fan
Manrose MF100T Mixed-Flo Inline Extractor Fan

At the top of our list we have the Manrose MF100T Extractor fan – check out our full review. At max speed, it has an impressive extraction rate of 245 cubic meters per hour (i.e. 68 litres per second) making it extremely efficient for bathrooms without windows. As well as a powerful extraction rate, this fan only uses up 25 watts of power which is pretty economical. 

In addition, it produces just 25 decibels of sound (at 3m), and anything under 30 decibels is decently quiet — so you’ll barely hear it running with the bathroom door closed. You are also covered by an excellent warranty of 30,000 hours or 3 years, whichever runs out first. As this fan is so great, it was included on most of our other buyer guides – and at the top as well.

Key Features

  • Powerful Maximum Airflow Rate: 68 litres per second (245 m3/hr)
  • No electrics in the bathroom as in the loft above
  • SFP: 0.37W/l/s
  • Maximum Sound Level: 24dB
  • Double Insulation – no earth required
  • Fully Building Code compliant
  • Fully BEAB approved rated to IPX4


  • Brand: Manrose
  • Model: MF100T
  • SFP Efficiency Rate: 0.37 / 0.37
  • Extraction Rate: 68 ltr/s
  • Noise Level: 24dB
  • Power Usage: 25W
  • Weight: 2kg

2) Envirovent SIL100T Extractor Fan with Timer

Envirovent SIL100t Bathroom Extractor Fan
Envirovent SIL100T Bathroom Extractor Fan Colour Options

The Envirovent SIL100T is an innovative 100mm domestic axial powerful extractor fan, designed for solving ventilation problems in bathrooms and WCs and therefore perfect for a bathroom without windows. Take a look at our full review for more information.

The SIL100T comes with an adjustable 1 to 30-minute overrun timer, and is fitted with elastic silent blocks that act as a base for the internal motors. This allows the fan to deliver exceptional performance whilst running quietly. This led to this model winning the prestigious Quiet Mark award back in 2013. While the regular finish is a smooth white you can also get it in silver.

The Envirovent SIL100T can be fitted onto walls, ceilings, or even windows. It comes fitted with a pilot light, backdraught shutter, and airflow guide vanes as standard. The fan is made from robust ABS plastic, and can operate efficiently in temperatures of up to 40 degrees C.

Key Features

  • Sound Level: 26.5dB (A)
  • Extraction Flow Rate: 26 litres per second (96m³/hr)
  • Wall or ceiling mounted
  • Backdraft Flap
  • Adjustable Overrun Timer
  • Install in any bathroom zone
  • IP45 Rated
  • 5 Year Warranty


  • Brand: Envirovent
  • Model: SIL100T
  • Extraction Rate: 96m³/hr
  • Noise Level: from 26.5 dB
  • Power Usage: from 12W
  • Weight: 1.46kg

3) Xpelair C4TS Extractor Fan with Timer

Xpelair C4TS Extractor Fan
Xpelair C4TS Bathroom Extractor Fan with Timer

The Xpelair C4TS is one of the quietest extractor fans on the market (was number 2 on our list) – check out our full review for more. It is quite simple to install, enabling it to be easily fitted onto walls, as well as ceilings and panels. It features the patented Xpelair Ghost™ Air Movement Technology and is part of their Simply Silent™ range of close-to-silent extraction fans.

As well as making much less noise, it features a built-in overrun timer, configurable from 30 seconds up to 30 minutes. It’s finished in a clean white, and the fascia can be removed for easy cleaning and maintenance, which is a great feature to have in a windowless bathroom.

To top this off, the Xpelair C4TS has two speeds, 15l/s and 21/s, allowing for customisation options to suit your application.

Key Features

  • Sound Level from 16dB
  • One of the quietest fans on the market
  • Versatile mounting options
  • Backdraft Flap
  • Adjustable Overrun Timer
  • Maximum Flow Rate: 29 litres per second (76m³/hr)
  • Building Regulations on Ventilation (F1) compliant
  • IPX4 Rated
  • 2 Year Warranty


  • Brand: Xpelair
  • Model: C4TS
  • SFP: 0.45 / 0.37
  • Extraction Rate: 15 / 21 ltr/s (2-speed)
  • Decibels: 16 dB / 29 dB
  • Power Usage: 7W
  • Weight: 862g

4) Manrose QF100T Extractor Fan with Timer

Manrose QF100T Bathroom Fan
Manrose QF100T Bathroom Extractor Fan

The Manrose QF100T is proclaimed by Manrose to be one of the latest domestic extractor fans that features a higher extraction rate than most fans, whilst also producing a low-volume output during extraction. It is the ideal choice for bathrooms, shower rooms and toilets, designed for wall or/and or ceiling mounting, so lots of flexibility.

The Manrose QF100T fan comprises a turning vane system, located in the spigot, which is designed to improve performance by maintaining a consistently higher output. With a noise level of just 27db, Manrose claim that this is over 60% lower than standard 100mm (4″) domestic fans. Be sure to check out our full review for more information.

Key Features

  • Sound Level: 27dB
  • SFP: 0.24W/l/s
  • Airflow Rate: 21 litres per second
  • Features integral backdraught shutters
  • Complies with both Part F & L
  • Unique turning vane technology
  • 3-Year Warranty or 30,000 hours


  • Brand: Manrose
  • Model: QF100T
  • SFP Efficiency Rate: 0.24
  • Extraction Rate: 21 ltr/s
  • Decibels: 27 dB
  • Power Usage: 4.8W
  • Weight: 680g

5) Blauberg 100 Extractor Fan with Humidistat

Blauberg 100 Humidistat Extractor Fan
Blauberg 100 Extractor Fan

The Blauberg Calm 100 extractor fan series delivers top airflow extraction rates with low noise outputs, thanks to its unique design. The German-engineered motor by Blauberg is fitted on anti-vibration mounts, and each model comes complete with anti-back draught shutters as standard.

This bathroom extractor fan is incredibly stylish; it comes in a UV-resistant chrome finish, but is also available in multiple colours: chrome, white, black, and red. The humidity sensor on the fan is adjustable from between 60-90% RH, and the overrun timer can be set from 2 minutes up to 30 minutes, after switching off. On top of this you are covered with a 5-year warranty.

Key Features

  • Emits a noise level of just 25dB
  • Extraction rate of 27dB is quite high for a 4-inch axial fan
  • Comes in lots of colours
  • Multiple control options available
  • Comes with a five-year warranty


  • Brand: Blauberg UK
  • Model: ‎CALM CHROME 100 H
  • Extraction Rate: 97 m3/hr
  • Noise Level: 25dB
  • Power Usage: 7.5W
  • Weight: 650g

6) Knightsbridge EX004T LED Backlit Extractor Fan

Knightsbridge LED Backlit Extractor Fan
Knightsbridge EX004T LED Extractor Fan

Last but not the least, we have the Knightsbridge EX004T to round up this list in style! It consists of stainless steel with black inserts for a striking visual appearance. As if that weren’t enough, it’s also LED-backlit, which means it can add tons of aesthetic value to your bathroom’s interior decor while also getting rid of moisture buildup and steam at a flow rate of 25 litres per second. It also comes in a wide array of styles including: Black, Grey, Stainless Steel, White and more.

It has a built-in overrun timer function that’s adjustable between 2 to 30 minutes and outputs a sound level of 35db. One nifty feature with this fan is that it has a ‎3hr emergency battery backup, in the event that you lose power. You are covered by a manufacturer warranty of 3 years for peace of mind.

Key Features

  • LED lighting effect during activation
  • Double insulated so does not require an earth
  • Compliant with latest Building Regulations (Part F)
  • 3hr emergency battery backup
  • Built-in over-run timer 2-30mins
  • 3-year warranty


  • Brand: Knightsbridge
  • Model: EX004T
  • Extraction Rate: 90m³/hr
  • Noise Level: from 35 dB
  • Power Usage: from 13W
  • Weight: 760kg

What to look for in an Extractor Fan for Windowless Bathroom?

If you’ve already made the smart decision to finally get an extractor fan installed in to your bathroom, then it’s time to get technical. In this buyer’s guide, we’ve laid out everything you need to bear in mind before you hit the market to find a top-quality extractor fan for your windowless bathroom. Make sure you read this guide to the end before finalizing your purchase decision.

Air Extraction Rate

First things first, you need to check the air extraction rate of your new extractor fan and see if it’s sufficient for the size of your bathroom. Smaller bathrooms can do just fine with the 54 cubic meters per hour (or 15 litres per second), the minimum requirement in the building regulations. Larger bathrooms, however, need higher extraction rates. Keep in mind though, the bigger your fan, the noisier it generally is!

Related: How long should a bathroom extractor fan stay on for?


You can get extractor fans for your bathrooms in two common sizes, 100mm and 150mm (4-inches and 6-inches). The latter is appropriate for a relatively large bathroom of at least 9 square meters or more, while the 100mm ones are good enough for most average-sized bathrooms in most households. Keep in mind though, the size of your bathroom isn’t the only factor you need to consider when you’re deciding on the right fan size to buy. The usage frequency of the bathroom also matters! 

For instance, if it’s a small bathroom that’s shared by a large family, you’ll need a bigger fan to drive out all the moisture build-up and keep it ventilated. If there’s already a hole for an extractor fan in your bathroom, be sure to measure it and find a fan that fits it. 

Related: What size extractor fan do I need for my bathroom?


The noise of a residential extractor fan is an important consideration. It’s not a big deal in a commercial setting as the surroundings aren’t exactly quiet anyway, but a noisy domestic fan can definitely keep you up at night — especially if you’re a light sleeper.

We recommend looking for fans that are advertised to make 30 decibels or less worth of noise. If an extractor fan’s quietness is specifically important to you, look for models with silent running ball-bearing motors as they tend to be much less noisy than standard ones.

Activation or On/Off Function

While you can leave your extractor fan running 24/7 for continuous ventilation, it’d be wasteful and unnecessary, even in a bathroom without any windows. You’d only need to turn it on after using the bathroom to start moving air, and once all the moisture is driven out, you can turn it back off after a few minutes.

Depending on the model you buy, you can do this in a variety of ways. Some come with a pull cord for starting, stopping, and toggling between different rotation speeds. Or, they can simply be hooked up to your switchboard to turn on and off like a light switch.

More innovative and advanced extractor fans can even turn on automatically upon sensing a rise in humidity in the air, and turn off once things are back to normal. But, that feature is only found in highly expensive models which not everybody can afford.


As mentioned above, you don’t have to run an extractor fan 24/7 for optimal results. It only needs to stay on for a few minutes after a visit to the bathroom, which is why some models have a thoughtful timer feature. It automatically turns on once you turn the shower and lights off, and switches off after a few minutes of driving all the steam out.

What is the best extractor fan for a bathroom without windows?

We found the best extractor fan for a bathroom without windows to be the Manrose MF100T. It has a massive extraction rate of 245 m3/hr making it one of the most powerful bathroom fans available, ensuring that your windowless bathroom will be extracted quickly. Also, it is fairly quiet and out of the way which is ideal for a bathroom with no windows.

Do bathroom extractor fans need to vent outside?

Yes, you wouldn’t want all that moisture to travel into another room in your house as that would pose the same problems as mould growth and paint damage. Instead, all that vapour needs to travel out into the open air to avoid those issues altogether.

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