A central exhaust system with heat recovery ensures the removal of polluted air from multiple accommodation units connected to a common riser duct by a roof fan, while fresh air is supplied by decentralized ventilation units with heat recovery installed in individual accommodation units.

Main features:

  • roof fans for individual riser ducts and decentralized ventilation units for each accommodation unit
  • exhaust ventilation
  • heat recovery
  • suitable for renovation projects

Basic system components:

  • roof fans
  • electrically controlled extract air valves
  • decentralized ventilation units with heat recovery in each accommodation unit

In this central exhaust system with heat recovery, exhaust air is extracted from multiple accommodation units through a shared duct system connected to roof fans. Fresh air is supplied by decentralized ventilation units, where heat recovery takes place via a heat exchanger, ensuring a continuous supply of thermally treated fresh air to the interior. Compared to conventional exhaust ventilation systems, this solution provides higher user comfort and helps reduce the building’s energy consumption.