Best Bathroom Extractor Fan Under £100
Clearing steam and preventing mould doesn't have to cost a fortune. We've compared the top-rated bathroom extractor fans under £100 to find which models actually shift moisture, run quietly, and fit standard UK ceiling or wall openings without breaking the bank.
Quick answer
The best bathroom extractor fan under £100 is the Manrose MF100T for its reliable 97 m³/hr airflow, built-in timer, and IPX4 moisture resistance. For a quieter, modern option with a sleek white finish, the Vent-Axia 100mm Lo-Carbon Silent is the top alternative.
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Research updated June 2026.
Manrose MF100T
Best all-round performance with timer and IPX4 rating.
| Product | Best For | Airflow | Noise Level | Rating |
|---|---|---|---|---|
| Manrose MF100T | Overall value | 97 m³/hr | 36 dB(A) | 4.6/5 |
| Vent-Axia 100mm Lo-Carbon Silent | Low noise | 85 m³/hr | 28 dB(A) | 4.5/5 |
| Xpelair Simply Silent DX100T | Quiet operation | 90 m³/hr | 30 dB(A) | 4.4/5 |
| EnviroVent Extractor Fan | Energy efficiency | 80 m³/hr | 32 dB(A) | 4.3/5 |
| Airflow Icon 100 | Compact design | 75 m³/hr | 34 dB(A) | 4.2/5 |
Manrose MF100T
Best OverallPros
- Strong airflow for standard bathrooms
- Adjustable timer prevents mould
- IPX4 rated for zone 2 installation
Cons
- Not the quietest at 36 dB
- Basic white finish may not suit modern decor
The Manrose MF100T is a workhorse extractor fan that delivers 97 cubic metres of airflow per hour, which is enough to clear steam from a small to medium bathroom (up to 9 square metres) in under 10 minutes. The built-in adjustable timer lets you set the fan to run for between 3 and 20 minutes after the light switch is turned off, which helps dry the room and prevent condensation buildup. Owner reviews on major UK retailers consistently praise its reliability and ease of installation, with many noting it fits directly into a 100mm wall or ceiling hole without needing extra adaptors.
The IPX4 rating means it is splashproof and can be safely installed in bathroom zone 2 (within 60cm of a bath or shower). Some users mention the fan is noticeable when running, but for the price point the noise level is acceptable. The single-speed motor is simple and durable, backed by a 2-year warranty from Manrose, a well-known UK ventilation brand. If you want a no-fuss fan that gets the job done without costing over £100, this is the one to beat.
Vent-Axia 100mm Lo-Carbon Silent
Best Quiet FanPros
- Very quiet at 28 dB(A)
- Low energy consumption (2.5W)
- Sleek modern design
Cons
- Lower airflow than Manrose
- Slightly more expensive
The Vent-Axia Lo-Carbon Silent is designed for bedrooms and bathrooms where noise is a concern. At just 28 dB(A), it is barely audible when running, making it ideal for ensuite bathrooms or guest WCs. The fan uses a low-energy DC motor that draws only 2.5W, which is significantly less than traditional AC fans, and the built-in timer helps ensure the room is properly ventilated after use. Owner feedback highlights the high-quality build and easy installation, with most users reporting it fits standard 100mm ducting without issues.
The airflow of 85 m³/hr is adequate for bathrooms up to 7 square metres, but it is not as powerful as the Manrose. Some users note that the fan can be sensitive to backdraughts if the ducting is long or has bends. The IPX4 rating allows zone 2 installation, and the fan comes with a 3-year warranty from Vent-Axia, a trusted UK brand. If quiet operation is your priority and your bathroom is on the smaller side, this is the best choice under £100.
Xpelair Simply Silent DX100T
Best Quiet AlternativePros
- Good airflow for quiet fan
- Easy to clean front cover
- Reliable brand reputation
Cons
- Timer is not as long as competitors
- Plastic feels slightly flimsy
The Xpelair Simply Silent DX100T is a solid middle-ground option that offers 90 m³/hr of airflow while keeping noise to just 30 dB(A). It is slightly louder than the Vent-Axia but moves more air, making it better suited for bathrooms up to 8 square metres. The fan features a removable front cover that clicks off for easy cleaning, which is a practical touch for maintaining performance in humid environments. Owner reviews on UK retail sites rate it highly for reliability, with many users reporting years of trouble-free operation.
The adjustable timer is a standard feature, though some users note the maximum run time is shorter than the Manrose. The IPX4 rating allows zone 2 installation, and the fan comes with a 2-year warranty from Xpelair, a well-known UK ventilation specialist. The plastic grille can feel a bit lightweight compared to the Vent-Axia, but it holds up well in normal use. If you want a quiet fan with slightly more pulling power than the Vent-Axia, this is a strong contender.
EnviroVent Extractor Fan
Best Energy EfficientPros
- Very low running cost
- Compact and easy to fit
- Good warranty support
Cons
- Lower airflow than top picks
- No pull cord option
The EnviroVent Extractor Fan is designed for energy-conscious homeowners who want to keep electricity bills low. It uses a high-efficiency motor that draws minimal power while still providing 80 m³/hr of airflow, which is enough for small bathrooms and ensuites up to 6 square metres. The fan includes a built-in timer that can be adjusted between 5 and 15 minutes, and the IPX4 rating makes it safe for zone 2 installation. Owner reviews highlight the straightforward installation process, with many users noting it fits directly into existing 100mm holes.
The lower airflow means it is not ideal for larger bathrooms or rooms with showers that produce a lot of steam. Some users also mention the lack of a pull cord as a minor inconvenience, as the fan is controlled by the light switch only. The build quality is good for the price, and EnviroVent offers a 3-year warranty, which is better than many competitors. If energy efficiency is your main concern and your bathroom is small, this is a smart pick under £100.
Airflow Icon 100
Best Compact DesignPros
- Very compact and low profile
- Simple installation
- Affordable price
Cons
- No timer feature
- Lower airflow limits use
The Airflow Icon 100 is the most compact fan in this roundup, with a low-profile grille that sits flush against the wall or ceiling. It is ideal for tight spaces or where a discreet appearance is important. The fan delivers 75 m³/hr of airflow, which is suitable for very small bathrooms, cloakrooms, or WCs. Installation is straightforward, as it fits directly into a 100mm hole and connects to standard wiring. Owner reviews on UK sites note that it is a good budget option for basic ventilation needs.
The lack of a timer is the biggest drawback, as the fan only runs while the light is on. This means it may not fully clear moisture after you leave the room. The airflow is also the lowest in this comparison, so it is not suitable for bathrooms with showers or baths. The build quality is acceptable for the price, and Airflow is a known brand in the ventilation market. If you need the smallest possible fan for a powder room and do not need a timer, this is the cheapest reliable option.
What to Check Before Buying a Bathroom Extractor Fan Under £100
Before you choose a fan, measure your bathroom size. A good rule of thumb is that the fan should be able to exchange the air in the room at least 8 times per hour. For a standard UK bathroom of 9 square metres with a 2.4m ceiling, you need around 86 m³/hr of airflow. Check the fan's IP rating: IPX4 is the minimum for zone 2 (within 60cm of water), while IPX5 or higher is needed for zone 1 (above a shower or bath). Also consider the ducting route: longer runs or bends reduce effective airflow, so a more powerful fan may be needed.
Noise level is another key factor. Fans rated under 30 dB(A) are considered quiet, while those above 35 dB(A) are noticeable, especially in small rooms. Timer features are highly recommended for preventing mould, as they allow the fan to run after you leave. Finally, check the warranty: most brands offer 2 to 3 years, but some budget fans only have 1 year. Sticking with established brands like Manrose, Vent-Axia, or Xpelair ensures better support and replacement part availability.
Mistakes to Avoid
One common mistake is buying a fan with too low an airflow for your bathroom size. A 75 m³/hr fan in a 10 square metre room will not clear steam effectively, leading to condensation and mould. Always calculate the required airflow before purchasing. Another mistake is ignoring the IP rating: installing a non-IP rated fan in zone 1 or 2 is dangerous and violates UK building regulations. Always check your bathroom zones and choose a fan with the appropriate rating.
Many buyers also forget to account for ducting resistance. If your ducting has multiple bends or is longer than 2 metres, you may need a fan with higher static pressure, not just high airflow. Finally, skipping the timer feature is a mistake in any bathroom used for showers. Without a timer, moisture lingers after you leave, increasing the risk of damp and mildew. Spend a little extra for a timer model if you can.
FAQs
What size extractor fan do I need for my bathroom?
Measure your bathroom volume in cubic metres and multiply by 8 to get the minimum airflow in m³/hr. For a 9m² room with 2.4m ceiling, you need at least 86 m³/hr.
Can I install a bathroom extractor fan myself?
Yes, if you are confident with basic electrical work and the fan is replacing an existing unit. For new installations, hire a qualified electrician to comply with Part P of UK building regulations.
What is an IPX4 rating and why is it important?
IPX4 means the fan is splashproof from all directions. It is the minimum rating for installation in bathroom zone 2, within 60cm of a bath or shower.
Do I need a timer on my bathroom fan?
Yes, a timer is highly recommended as it allows the fan to run after you leave, clearing residual moisture and preventing mould. It is a key feature for any bathroom used for showers.
How loud should a bathroom extractor fan be?
Look for fans rated under 30 dB(A) for quiet operation. Fans between 30 and 35 dB(A) are acceptable, while anything above 35 dB(A) will be clearly audible.
Can I use a 100mm fan for a larger bathroom?
Only if the fan has high airflow, like the Manrose MF100T at 97 m³/hr. For bathrooms over 10 square metres, consider a 150mm fan or a more powerful model.
What is the difference between axial and centrifugal fans?
Axial fans are simpler and cheaper, good for short straight ducting. Centrifugal fans are more powerful and can handle longer duct runs with bends, but are usually more expensive.
Are cheap bathroom fans worth buying?
Cheap fans under £30 often lack timers, have low airflow, and are noisy. Spending between £50 and £100 gets you a reliable fan with useful features like a timer and IPX4 rating.
How do I clean a bathroom extractor fan?
Turn off the power, remove the front grille (most clip off), and wipe the blades and housing with a damp cloth. Clean the grille every 3 months to maintain airflow.
What is the best brand for bathroom extractor fans under £100?
Manrose, Vent-Axia, and Xpelair are the most reliable brands in this price range, with good warranty support and widely available replacement parts.
Our verdict
The Manrose MF100T is our best overall pick for its strong 97 m³/hr airflow, adjustable timer, and IPX4 rating at a price well under