Search results


Application: used for building ventilation air


  • Effective on odor reduction, especially in areas less than 1000 feet from the building.
  • Some designs may reduce dust emission.


  • No reduction in emission occurs.
  • Chimneys must be relatively tall to have a significant impact.
  • Appearance of chimneys may make the building look “factory-like”.

Figure 1. Ventilation chimney stacks on a German swine farm.