Außenfächer
Außenfächer is a German term that translates to "external fan" or "outside fan." It commonly refers to a fan installed on the exterior of a building, typically on a wall or roof. These fans are often used for ventilation purposes, such as removing heat, moisture, or odors from a space. They can be part of a larger HVAC (heating, ventilation, and air conditioning) system or function as standalone units.
The design of Außenfächer varies depending on their intended application. Some are simple, exposed fans, while