Centrifugal & Radial Fans

Centrifugal and radial bathroom extractor fans – a powerful solution for high-resistance spaces

Centrifugal and radial bathroom extractor fans represent a professional class of ventilation for everyone who needs higher pressure, stable airflow and efficient moisture removal even in longer or bent ventilation ducts.
If you are looking for a centrifugal bathroom extractor fan that effortlessly "pulls" through a high-resistance duct, this category is the most suitable choice.

Available are models with a quiet radial impeller, advanced sensors (humidity, timer, light), ball bearings and IP protection. They are optimal for bathrooms, toilets, utility rooms or any situation where a classic axial fan is no longer sufficient.

For the best user experience and fresh air, check out the range and choose the model that suits your needs.

Advantages of centrifugal and radial bathroom extractor fans

Centrifugal fans are designed specifically for longer ducts and higher pressure resistance, which means they operate where standard axial fans fail. The key advantages of the category are highlighted below.

1. High pressure – ideal for long ventilation ducts

A centrifugal bathroom extractor fan creates a significantly higher static pressure, which enables:

• operation in ducts up to several dozen metres,

• stable airflow even in bent ducts,

• a reduced risk of backflow of air and moisture.

This is crucial in multi-apartment buildings and all structures with central vertical shafts.

2. Quiet and stable radial drive

Radial fans are naturally quieter at higher resistance than axial models.
This means:

• quieter night-time operation,

• fewer vibrations,

• a more constant airflow.

Models such as the SIKU VNV series or FANTOM TH run extremely quietly even during longer continuous ventilation.

3. Advanced functions for complete ventilation control

Most models offer:

• humidity sensor (HYGROSTAT) – automatic switch-on at a set humidity,

• timer – adjustable switch-off delay,

• light sensor – activates operation when the room is in use,

• ball bearings – long service life and quieter operation,

• backdraught shutter – prevents the return of odours and cold air.

More advanced models use MR / MRH controllers, which enable complex automatic ventilation modes.

Use of centrifugal fans in the bathroom

A centrifugal or radial fan is the ideal choice when:

• the ventilation duct is longer than 2–3 m,

• there is high humidity in the room (e.g. bathrooms without windows),

• a constant air exchange is required,

• a stable airflow despite resistance must be ensured,

• there are problems with mould or condensation.

Most common applications

• bathrooms and toilets in apartment blocks,

• sanitary facilities in commercial buildings,

• utility rooms and laundries,

• spaces with longer ducts Ø100–Ø150 mm.

For basic information about bathroom extractor fans, customers can also visit the category:
→ Bathroom extractor fans

Technical features (typical for the category)