Ventilation System Operation and Installation

How  Zehnder Ventilation Works

  1. Fresh air is fed into the system via an external wall vent. Stale air is extracted from the “wet” rooms of the building, including kitchens, bathrooms and laundry rooms.
  2. The Zehnder ComfoAir ventilation device recovers up to 95% of the energy from the extract air and returns it to the fresh air. This can be humidified, dehumidified, heated and cooled using optional components.
  3. The Zehnder ComfoFresh air distribution system channels optimally tempered fresh air to individual rooms as needed and vents extract air to the outside. The air volume can be adjusted individually for each room.


Coordinated, simple-to-use system components enable quick installation. The Zehnder air distribution system can be installed easily without the need for special tools, saving you time and money. Zehnder also instructs installers on the use and installation of individual components. Prompt technical advice is available from our advisers during commissioning and servicing.

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