Systemair BF Silent Bathroom Extractor Fan 100mm 4"
Systemair BF Silent Bathroom Extractor Fan 100mm 4"
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Delivery and Warranty
Standard UK Mainland Delivery
If you are not in a rush, then we offer standard delivery and your order should be with you between 2-3 working days.
£6.95
Next Working Day Delivery
Place your order before 12pm Monday to Thursday and receive your order the next working day. Orders placed on Friday before 11am will be processed and delivered on Monday. (Excludes Sunday’s and Public Holidays)
£15.95
Nominated Day Delivery
We know sometimes you will need an order on a particular date in the future. Simply select this option at checkout and add what date you would like to receive the order. We will then contact you to confirm the date. If you need to change this order date then please contact us ASAP.
£15.95
Northern Ireland Delivery
We offer a flat fee rate for Northern Ireland orders, and all are 5-7 working day lead times.
£29.95
Scottish Highlands & Islands Delivery
We only offer a flat fee rate for Scottish Highland & Islands orders, and all are 5-7 working day lead times.
£45.95
Channel Islands Delivery
We only offer a flat fee rate for Channel Islands orders, and all are 5-7 working day lead times.
£45.95
Product Details
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Specifications
Product specifications
| Brand | Systemair |
| Airflow | Up to 83 m³/h |
| Duct connection | 100 mm |
| Motor | AC |
| Power | Under 8 W |
| IP rating | IPX4 |
| Back-draught shutter | Integral |
| Mounting | Wall, ceiling or window |
| Insulation | Double insulated (Class II) |
| Warranty | 1 Year Manufacturers |
Summary
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The Systemair BF Silent is a quiet, low-energy bathroom extractor fan for a 100 mm duct, ideal for extracting stale, humid air from bathrooms, toilets and small-to-medium rooms. It extracts directly outside or through a short duct run, with a flat aesthetic front cover that suits modern interiors and clips off easily for cleaning.
- IPX4 protection for bathroom use
- Integral back-draught shutter to stop air flowing back when off
- Low power consumption — under 8 W
- Double insulated (Class II) — no earth connection required
- Rigid, optimised spigot and strengthened guard to maximise airflow
- Available in Standard, run-on Timer, and Humidistat & Timer versions
Suitable for
- Bathrooms, toilets and small-to-medium rooms
- Extracting directly outside or through short ducting
Installation
Wall, panel, ceiling or window mounting. Should be installed by a competent person.
Product Description
The Systemair BF Silent is a quiet, low-energy bathroom extractor fan for a 100 mm duct, ideal for extracting stale, humid air from bathrooms, toilets and small-to-medium rooms. It extracts directly outside or through a short duct run, with a flat aesthetic front cover that suits modern interiors and clips off easily for cleaning.
- IPX4 protection for bathroom use
- Integral back-draught shutter to stop air flowing back when off
- Low power consumption — under 8 W
- Double insulated (Class II) — no earth connection required
- Rigid, optimised spigot and strengthened guard to maximise airflow
- Available in Standard, run-on Timer, and Humidistat & Timer versions
Suitable for
- Bathrooms, toilets and small-to-medium rooms
- Extracting directly outside or through short ducting
Installation
Wall, panel, ceiling or window mounting. Should be installed by a competent person.
Delivery & Returns
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Payment Methods
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What is the Systemair BF Silent for?
It's a quiet bathroom extractor fan for a 100 mm duct, designed to remove stale, humid air from bathrooms, toilets and small-to-medium rooms, either straight outside or through a short duct run.
Is it suitable for a bathroom?
Yes, it's IPX4-rated and double insulated (no earth connection required), making it suitable for bathroom use when connected to a suitable circuit by a qualified electrician.
How is it controlled?
The BF Silent comes in three versions: Standard (switched with the light or a separate switch), run-on Timer (keeps running for a set time after switch-off, adjustable 1 to 25 min), and Humidistat & Timer (boosts automatically when humidity rises).
Does it stop draughts when off?
Yes, an integral back-draught shutter closes when the fan is off to prevent outside air flowing back into the room.
Is it easy to clean and energy efficient?
The flat front cover clips off easily for cleaning, and the fan draws under 8 W for low running costs.
Where can it be mounted and what's the warranty?
It can be wall-, ceiling- or window-mounted, and carries a 1-year manufacturer's warranty. It should be installed by a competent person.