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Extraction fans are used when the natural chimney draught is insufficient. We generally recommend reinforcing the smoke extraction with a smoke gas fan. This is the only way to ensure reliable extraction of the smoke gases.

There are various systems for this:

  1. Smoke extraction with Hood with flanged flue gas fan
  2. Installation of a flue gas fan in the pipe between hood and chimney
  3. Installation of a bypass fan
  4. Installation of a chimney hat fan on the chimney mouth
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