Bathroom extractor fan ORNO BF-125/S, 125 mm, axial ventilation

ORNO BF-125/S is a 125 mm bathroom extractor fan designed for basic axial ventilation in bathrooms and small wet rooms. The compact unit fits standard 125 mm ducting and provides continuous or intermittent air extraction to reduce humidity and remove odors. Its simple design allows installation in wall or ceiling openings and is intended for residential use in bathrooms, toilets and utility rooms where straightforward, space-efficient ventilation is required.

Advantages

The fan offers a compact form factor and straightforward axial airflow suitable for small volumes. It is compatible with common 125 mm ducting dimensions, which simplifies replacement or integration into existing ventilation runs. Installation can be completed in typical wall or ceiling apertures without extensive modifications. The device provides effective basic extraction of moist or stale air, helping to maintain dryer surfaces and reduce condensation risks in confined wet-room environments.

Suitable for

• Residential bathrooms and showers
• Toilets and guest WC rooms
• Small utility or laundry rooms with limited ventilation
• Direct replacement for 125 mm axial fans

Key specifications

• Fan type: axial extractor for bathroom use
• Duct diameter compatibility: 125 mm
• Mounting: wall or ceiling
• Application: extraction of humid air and odors in small rooms
• Design: compact housing suitable for standard ventilation openings

How to use

Mount the fan in a suitable wall or ceiling opening that matches 125 mm ducting. Connect the unit to the building’s ductwork or to a short duct section leading outdoors, ensuring the airflow direction follows the arrow on the housing. Make the electrical connections according to local regulations and safety standards, using a qualified electrician when required. The fan can operate on switched power for intermittent use or be wired to continuous supply where constant extraction is needed. Regularly inspect the impeller and housing for dust build-up and clean as part of routine maintenance.

Usage recommendations

For reliable operation, ensure the fan is installed with a clear discharge path to the outside and, if used in a shower area, positioned to avoid direct water spray. Periodic cleaning of the grille and impeller will maintain airflow performance; disconnect power before servicing. If persistent condensation or odors continue, evaluate ventilation capacity and consider increasing extraction time or adding a timed or humidity-controlled switch.