Bathroom extractor fan ORNO BF-100/S 100 mm surface-mounted quiet

ORNO BF-100/S is a surface-mounted bathroom extractor fan with a 100 mm duct connection designed for ventilation of bathrooms and other small rooms. The compact unit houses a quiet motor intended for both continuous and intermittent operation, enabling discreet extraction of moist air and odors. Its low-profile housing allows installation on walls or ceilings where space is limited, helping to maintain indoor air quality in residential environments.

Advantages

The fan combines a compact surface-mounted design with a quiet motor suitable for prolonged or periodically switched operation. Its 100 mm duct connection ensures compatibility with common ventilation ducts and straightforward integration into existing systems. Installation on walls or ceilings is simple thanks to the lightweight housing and standard mounting points, and the unit’s construction is focused on practical use in bathrooms and small utility rooms.

Suitable for

• Ventilation of bathrooms and shower rooms
• Air extraction from guest toilets and small WC rooms
• Ventilating small kitchens, utility rooms, and laundry areas
• Supplementing residential ventilation to reduce humidity and odors

Key specifications

• Duct connection diameter: 100 mm
• Mounting type: surface-mounted (wall or ceiling)
• Motor noise level: quiet operation suitable for continuous use
• Suitable for intermittent and continuous operation
• Application: bathrooms and small rooms in residential buildings

How to use

Mount the unit on a suitable wall or ceiling surface where the 100 mm duct connection can be routed to the ventilation system or an external grille. Ensure electrical supply is disconnected before making wiring connections and follow local electrical codes when connecting the fan to power. Once wired and securely mounted, switch the fan on via the room’s control switch or an appropriate timer or humidity sensor if a controlled installation is required. Regularly inspect the unit for dust buildup and clean the external grille to maintain airflow.

Usage recommendations

For reliable operation, select an installation location that allows direct routing of the 100 mm duct and avoids long, restrictive duct runs. Use a timer or humidity sensor if continuous extraction is not required; this reduces energy use and ensures efficient humidity control. Periodically clean the grille and check the motor for dust to maintain quiet performance and airflow.