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Centrifugal and radial bathroom fans – a powerful solution for high-resistance spaces
Centrifugal and radial bathroom fans represent a professional class of ventilation for those who require a stronger pressure, stable air flow, and effective moisture removal even in longer or curved ventilation shafts.
If you are looking for a bathroom exhaust f...
Centrifugal and radial bathroom fans – a powerful solution for high-resistance spaces
Centrifugal and radial bathroom fans represent a professional class of ventilation for those who require a stronger pressure, stable air flow, and effective moisture removal even in longer or curved ventilation shafts.
If you are looking for a bathroom exhaust fan that effortlessly “pulls” through a high-resistance shaft, this category is the most suitable choice.
Models with silent radial turbines, advanced sensors (humidity, timer, light), ball bearings, and IP protection are available. They are optimal for bathrooms, sanitary rooms, utility spaces, or any situations where a classic axial fan is no longer sufficient.
For the best user experience and fresh air, check the offer and choose a model that meets your needs.
Advantages of centrifugal and radial bathroom fans
Centrifugal fans are specifically designed for longer ducts and higher pressure resistances, which means they operate where standard axial fans fail. Below are the key advantages of the category.
1. High pressure – ideal for long ventilation shafts
A centrifugal fan for bathrooms generates a significantly higher static pressure, allowing for:
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operation in shafts up to several tens of meters,
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stable flow even in curved ducts,
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reduced risk of backflow of air and moisture.
This is crucial in multi-family buildings and all objects with central vertical shafts.
2. Quiet and stable radial drive
Radial fans are naturally quieter at higher resistance than axial models.
This means:
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quieter night operation,
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less vibration,
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more constant air flow.
Models such as the SIKU VNV series or FANTOM TH operate exceptionally quietly even during prolonged continuous ventilation.
3. Advanced features for complete control of ventilation
Most models offer:
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humidity sensor (HYGROSTAT) – automatic activation at a certain humidity level,
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timer – adjustable delay for turning off,
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light sensor – activates operation when the space is in use,
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ball bearings – longer lifespan and quieter operation,
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backdraft damper – prevents the return of odors and cold air.
More advanced models use controllers MR / MRH, allowing for complex automatic ventilation modes.
Application of centrifugal fans in bathrooms
A centrifugal or radial fan is the ideal choice when:
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the ventilation shaft is longer than 2–3 m,
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there is high humidity in the space (e.g., bathrooms without windows),
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constant air exchange is required,
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it is necessary to provide stable flow despite resistance,
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there are problems with mold or condensation.
Most common applications
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bathrooms and toilets in apartment blocks,
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sanitary rooms in commercial buildings,
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utility and laundry rooms,
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spaces with longer ducts Ø100–Ø150 mm.
For basic information about bathroom fans, customers can also visit the category:
→ Bathroom Fans
Technical specifications (typical for the category)
| Feature | Description |
|---|---|
| Type of fan | Centrifugal / radial |
| Diameter | Ø80-100 mm |
| Pressure | significantly higher than with axial fans |
| Flow | 80–250 m³/h (depending on the model) |
| Humidity sensor | YES some |
| Timer | YES some |
| Backdraft damper | YES |
| Bearings | ball (long lifespan) |
| Installation | wall or duct system (surface-mounted, recessed) |
FAQ – Frequently Asked Questions
How does a bathroom centrifugal fan work?
A centrifugal fan uses a radial turbine that generates high static pressure. This allows for effective ventilation through long or demanding ducts, where an axial fan loses strength.
The goal is the rapid removal of moisture, condensation, and odors.
When should you choose a centrifugal fan instead of an axial one?
When you have:
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a ventilation shaft longer than 2–3 m,
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more bends or narrowing in the duct,
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problems with humidity and mold,
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an apartment in a block where there is a common vertical shaft.
Are centrifugal fans noisy?
No. Thanks to the radial turbine, they are quieter at high resistance than axial models. You can also choose from quiet series of fans.
Do I need a fan with a humidity sensor?
Yes, if you want completely automatic ventilation.
A humidity sensor (hygrostat) automatically activates the fan when relative humidity exceeds a certain level.
Do centrifugal fans have a backdraft damper?
Most models in this category come with a built-in damper that prevents odors and cold air from coming back into the room.
We recommend checking other related groups:
Quiet bathroom fans
https://www.akvavent.si/si/378-tihi-kopalniski-ventilatorji
Fans with humidity sensors
https://www.akvavent.si/si/104-kopalniski-ventilatorji-s-senzorji-vlage-svetlobe-casovniki
Fans with damper
https://www.akvavent.si/si/385-z-loputo-kopalniski-ventilatorji-z-neprotipovratnim-tokom
Air vents and valves
https://www.akvavent.si/si/214-zracniki-in-ventili
Air recovery
https://www.akvavent.si/si/377-rekuperacija-zraka
CENTRIFUGAL AND RADIAL BATHROOM FANS There are 3 products.
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FANTOM TH – quiet centrifugal bathroom fan with two-speed...
FANTOM TH is a quiet and powerful centrifugal bathroom exhaust fan with two-speed operation, humidity sensor, and timer. Ideal for long ducts and high humidity spaces.
152.50 €In Stock -
Quiet Radial Fan with Humidity Sensor SIKU VNV 1B H for...
The quiet radial fan SIKU VNV 1B H with a built-in humidity sensor is ideal for single-duct ventilation systems. With a performance of up to 102 m³/h, a backdraft damper, and quiet operation at 26.6 dBA, it ensures efficient ventilation for bathrooms, kitchens, and storage rooms. Order now!
286.93 €In Stock -
Quiet Radial Fan with Timer and Switch SIKU VNV 1B KV TR for...
Powerful and quiet radial fan
269.99 €In Stock
