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Casals > Products applications

Bathroom extractor fans

Bathroom extractor fans for controlling humidity, condensation and odours

Bathrooms and kitchens are the main wet areas in a home. Effective ventilation is essential in these rooms to remove humidity, odours and stale air, reduce condensation and help prevent mould growth.

Ventilation is particularly important in bathrooms without windows or direct openings to the outside, which are common in blocks of flats, offices, shops, factories and other buildings. If the humidity generated by baths and showers is not removed effectively, it may condense on walls, ceilings, joints, mirrors and bathroom furniture.

Installing a bathroom extractor fan provides mechanical air renewal and helps control excess humidity. These fans extract stale, humid air from the bathroom and discharge it directly outside or through a ventilation duct.

 

How does a bathroom extractor fan work?

A bathroom extractor is an electric fan designed to remove humid and stale air. Depending on the installation, it can be fitted in a wall, ceiling, suspended ceiling or window.

Models equipped with a non-return damper or automatic backdraught shutter help prevent air, odours and small particles from returning through the duct or entering from outside when the fan is switched off.

Effective extraction also requires a replacement air inlet, such as a gap beneath the door or a transfer grille. This allows the extracted air to be replaced by air entering from other areas of the home.

 

Bathroom ventilation within a double-flow system

For continuous air renewal throughout the home, a double-flow mechanical ventilation system can be installed. These systems extract stale air from wet areas—including bathrooms, toilets and kitchens—and supply filtered outdoor air to dry areas such as bedrooms and living rooms.

Heat recovery units transfer part of the thermal energy from the extracted air to the incoming fresh air, helping to reduce heating and cooling losses associated with ventilation.

Ventilation and air purification perform different but complementary functions. Air purifiers with HEPA H14 filters remove particles from indoor air, whereas ventilation systems renew the indoor environment by introducing outdoor air and extracting stale air.

Discover our solutions for controlled mechanical ventilation (CMV) or consult the complete Casals CMV catalogue.

 

desigNtial by Casals bathroom extractor fans

The desigNtial by Casals range combines comfort, design and efficiency to meet the ventilation requirements of bathrooms, toilets, kitchens and other residential spaces or small commercial premises.

The range includes fans for installation in walls, ceilings, suspended ceilings, windows and ducts. Depending on the model, they are available with a timer, humidity sensor, motion or presence sensor, non-return damper, automatic backdraught shutter or EC motor.

 

TEKSTÜR and TEKSTÜR PLUS: customisable design extractor fans

TEKSTÜR and TEKSTÜR PLUS are quiet, premium extractor fans designed to blend discreetly into bathrooms, living rooms and other spaces where aesthetics are especially important.

Their smooth front panels are easy to clean and can be customised on site to match the colour and interior design of the room. TEKSTÜR incorporates an electronic timer and a non-return damper, while TEKSTÜR PLUS features long-life bearings and an automatic non-return damper. The plastic components used in TEKSTÜR PLUS are recyclable.

 

ERELIS: quiet, slim bathroom extractor fan

ERELIS is a quiet, slim extractor fan with a front panel only 17 mm thick. It can be installed in a wall or ceiling and is suitable for bathrooms, toilets and small or medium-sized rooms, including installations where space is limited.

Its housing and impeller are made of recyclable, UV-resistant ABS plastic. It is available in a basic version, with a timer, with a humidity sensor and timer, or with a presence sensor.

 

LÍDERO: extractor fan with an automatic backdraught shutter

LÍDERO is a high-airflow extractor fan for wall or ceiling installation. Depending on the version, it is available with different control options and an automatic backdraught shutter.

IKHUNA: window extractor fan

IKHUNA is designed for installation in windows. Depending on the version, it can incorporate an automatic backdraught shutter, timer, humidity sensor or presence sensor.

 

KUBALIK: reversible high-airflow extractor fan

KUBALIK is a quiet, reversible, high-airflow extractor fan for installation in a wall or window. It incorporates an automatic backdraught shutter and is suitable for utility rooms, bathrooms, kitchens and other spaces requiring rapid air renewal. Its plastic components are recyclable.

 

KUVIO and KUVIO EEC: mixed-flow in-line fans

KUVIO and KUVIO EEC are high-efficiency mixed-flow in-line fans for installation in ducts and suspended ceilings. They are manufactured from self-extinguishing plastic resin resistant to aggressive chemical agents.

KUVIO EEC incorporates an energy-efficient EC motor that allows fan operation to be adapted to the requirements of the installation. The mineral-filled polypropylene components are recyclable at the end of the product’s useful life.

 

KUVIO-Q and KUVIO-Q EEC: sound-insulated in-line fans

KUVIO-Q and KUVIO-Q EEC are sound-insulated mixed-flow in-line fans for duct installation. Their sound-absorbing lining helps reduce noise emissions, making them suitable for applications where low sound levels are a priority.

KUVIO-Q EEC incorporates an energy-efficient EC motor with brushless electronic control and a 0-10 V speed-control signal. The mineral-filled polypropylene components are recyclable at the end of the product’s useful life.

desigNtial by Casals residential extractor fan range

 

How do I choose a bathroom extractor fan?

Fan selection should take account of the size of the bathroom, the required airflow, duct diameter and length, acceptable sound level, installation position and preferred control system.

  • Basic extractor fan: operated by an independent switch or connected to the room lighting.
  • Extractor fan with timer: continues to operate for a set period after the light or switch has been turned off.
  • Extractor fan with humidity sensor: activates when the humidity exceeds the selected level.
  • Extractor fan with presence sensor: starts when occupancy is detected.
  • Extractor fan with non-return damper: helps prevent air and odours from returning when the fan is switched off.
  • In-line extractor fan: installed inside a duct or suspended ceiling, allowing the fan to be positioned away from the room.

 

Frequently asked questions about bathroom extractor fans

Is an extractor fan necessary in a bathroom without windows?

A bathroom without natural ventilation requires a ventilation system capable of removing humidity and stale air. An extractor fan provides mechanical, controlled air renewal.

Where can a bathroom extractor fan be installed?

Depending on the model and duct configuration, it can be installed in a wall, ceiling, suspended ceiling or window.

Which extractor fan is suitable for controlling humidity?

An extractor fan with a humidity sensor can activate automatically when the relative humidity exceeds the selected level and stop when suitable conditions have been restored, according to the fan settings.

What does a non-return damper do?

A non-return damper helps prevent air, odours and particles from entering the bathroom from outside or through the duct when the fan is switched off.

Can an air purifier replace a bathroom extractor fan?

No. An air purifier filters particles from indoor air but does not remove excess humidity or replace stale air with fresh air. Ventilation and air purification perform different functions.

What maintenance does a bathroom extractor fan require?

The grille or front panel should be kept clean, and the duct, damper and fan should be checked periodically for obstructions. Always follow the maintenance instructions supplied with the individual model.

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RESIDENTIAL

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LÍDERO:

Extractor fan with automatich backdraught shutter for ceiling and wall installation, for intermittent or continuous ventilation in bathrooms, toilets, kitchens, dining rooms, living rooms, domestic and commercial spaces. Quiet and efficient Casals extractor.

> more information

BT-3 EEC:

> more information

ERELIS:

Ultra-quiet and slim extractor with back draught damper for ceiling and wall installation. Modern design with an ultra-thin 17mm thick front panel so that it does not come out when installed.

> more information

ESTELA:

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IKHUNA:

Casals extractor fan with automatic backdraught shutter for installation in windows for intermittent or continuous ventilation in bathrooms, toilets, kitchens, dining rooms, living rooms, residential and commercial or tertiary spaces. Available with humidity sensor, presence or motion sensor and timer.

> more information

KUBALIK:

Casals high airflow rate and silent reversible extractor fan with automatic back draught shutter for window or wall installation. It allows to choose whether you want to supply air into a room or extract it.

> more information

KUVIO:

High efficiency n-line mixed flow fan constructed in self-extinguishing plastic resin and resistant to aggressive chemical agents. Available with timer.

> more information

KUVIO EEC:

High efficiency in-line mixed flow fan with EC brushless Casals motor. Made of self-extinguishing plastic resin and resistant to aggressive chemical agents. Two speeds.

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TEKSTÜR:

High-end extractor with timer and back draught damper for ceiling and wall installation Design front panel, with double texture and designed to be maintenance-free. Customizable colour on site according to the palette chosen by the interior designer.

> more information

TEKSTÜR PLUS:

High-end extractor with long life bearings and automatic back draught damper for ceiling and wall installation. Design front panel, with double texture and designed to be maintenance-free. Customizable color on site according to the palette chosen by the interior designer

> more information
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