2026 update: Ceiling extractor fans help remove steam, odours and stale air from bathrooms, kitchens and other rooms where opening a window is not enough. The right choice depends on the room, the duct route, the fan size and whether you need a simple extractor or a combined fan-and-light unit.
Key takeaway
Start with the fan diameter, airflow route and installation position. A fan that vents into the roof cavity moves the moisture problem rather than solving it.
What to look for in a ceiling extractor fan
A ceiling extractor fan pulls humid or stale air from a room and sends it through ducting to an external vent. It works best near the main moisture source with a short, practical duct route.
Models vary by diameter, airflow, noise, cut-out and switching. Some combine extraction with a light or heater. Do not choose by appearance alone; confirm the specifications and electrical requirements.
Compare current options in the extractor fan collection and measure the existing opening before ordering.
Browse by room: For bathrooms, compare fan diameter and ducting. For kitchens, confirm the model suits the ventilation job. For guest toilets, a compact unit may be enough with a short, clear duct route.
Bathroom, kitchen or bedroom: where should it go?
Bathrooms create a short, intense burst of moisture, so position the fan near the shower or bath while following the room's electrical requirements. Kitchens need more care: a bathroom extractor is not automatically a substitute for grease and cooking-fume extraction. Bedrooms usually need ventilation for stale air; investigate leaks, damp and condensation as well as choosing a fan.
How to choose the right size
Fan size is often described by duct or grille diameter, such as 100 mm, 150 mm or 200 mm. That measurement is useful, but airflow, duct length, bends and room use also affect performance.
| Situation | What to check | Direction |
|---|---|---|
| Small guest toilet | Compact grille and short duct | Compare 100–150 mm models |
| Family bathroom | Steam load and timer | Compare 150–200 mm models |
| Large ensuite | Room volume and duct bends | Prioritise airflow data |
| Fan with light | Cut-out and switching | Check complete electrical requirements |
Ceiling extractor fan or fan with LED light?
A combined unit can simplify a bathroom renovation when one ceiling opening needs to provide both light and extraction. Check the light output, cut-out, switching arrangement and electrical requirements.
For a simple ventilation job, a dedicated extractor is easier to compare. If you are changing the lighting as well, compare it with LED ceiling lights. A combined heater, light and fan may also suit some renovations, but fixed wiring should be handled by a qualified electrician.
Installation note: Never vent a bathroom extractor into the roof cavity. The duct should discharge outdoors through a suitable wall or roof terminal.
Installation details that affect performance
Confirm there is enough space above the ceiling for the fan body and duct. Check the existing cut-out rather than assuming a new grille will cover it. Technical drawings help you compare the proposed unit with the available space.
Keep ducts short, support flexible ducting and avoid sharp bends where possible. Use a qualified installer for new circuits, isolators, roof penetrations or fixed-wiring changes.
Common mistakes to avoid
- Choosing by grille size without checking airflow and ducting.
- Venting into the roof cavity.
- Installing too far from the moisture source.
- Ignoring the existing cut-out and ceiling depth.
- Assuming a bathroom extractor suits grease-heavy kitchen extraction.
Compare compact and specialist options
There is no single best extractor fan for every room. Compare the 8-inch bathroom extractor fan, the 12-inch white extractor fan and the square extractor fan with LED light according to the room and installation plan.
Dimension images are useful when working with an existing opening. For a wider bathroom scheme, pair extraction with indoor wall lights or a separate ceiling-light layout.
Before ordering: record room dimensions, existing cut-out, duct diameter, likely duct length, switch arrangement and discharge route.
Frequently asked questions
Where should I install a ceiling extractor fan in a bathroom?
Place it near the main moisture source, usually above or close to the shower or bath, while following the room's electrical requirements. The duct should discharge outdoors.
What size extractor fan do I need?
Start with room size, moisture load, duct diameter and duct length. Compare airflow and installation information rather than choosing only by grille size.
Should a bathroom extractor fan vent outside?
Yes. Venting into a roof cavity can create condensation problems. Use a suitable external wall or roof terminal.
Can I use a ceiling extractor fan in a kitchen?
It depends on the job. Cooking fumes and grease usually need ventilation designed for that environment.
Is an extractor fan with a light worth considering?
It can make sense during a bathroom renovation. Check light output, cut-out, switching and electrical requirements first.
