If the aim is to optimise your energy efficiency, you need to run a system that is controlled automatically by the ventilation need in each individual flat. This solution involves connecting a central ventilation unit via main ducts or a shaft to a distribution cabinet for each landing. 

In the stairwell, opposite the door to each apartment, a technical cabinet is installed, containing motorised dampers and sensors for air quality, humidification and temperature. These cabinets are then docked to a fire cartridge with a fire damper in order to raise the standard of fire safety. From the technical cabinet/fire cartridge, ducting is placed in the apartment hallway and through to a distribution box fitted there. A loop with ducts for the supply and extract air is installed against the angle between the ceiling and wall in the hallway. This loop is then covered by prefabricated duct casing for a neat, discreet appearance. For interiors requiring air supply or extraction, holes are then placed in the respective walls. 

No inconvenience for neighbours

The central ventilation unit is pressure-controlled. Each apartment is regulated independently of adjacent apartments through the technical cabinet, where the air flow is adjusted automatically in response to the signal from the air quality and humidity sensors. While these upgrades enhance ventilation for maximum comfort for both the occupants and building users generally, they also ensure energy-efficient operation, in that ventilation is provided only on a needs basis.