Main features:

• roof fan for air exhaust
• exhaust ventilation for sanitary facilities
• no heat recovery
• suitable for the renovation of sanitary facilities

Basic system components:

• roof fan

The system does not use heat recovery. Make-up air is supplied indirectly from other office areas. It enters the sanitary facilities through transfer openings or leakage paths, ensuring continuous air exchange. Alternatively, the sanitary facilities can be ventilated using multiple inline duct fans installed on each floor.