What is the difference between a shared system and central exhaust ventilation?

Both shared systems and central exhaust ventilation are exhaust systems that remove used and humid air from the dwelling. The difference lies in how the system is organised. With central exhaust ventilation, each housing unit has its own exhaust fan that controls the airflow locally. In a shared system, one common exhaust fan is shared by several housing units, where a single fan serves a defined number of apartments. The choice of solution depends on the building’s design, requirements for control, and the project’s technical conditions.