A motorised flue fan assists the upward draught through the chimney, helping eliminate potential flue problems.
The three smaller models F28, F55 and F85 can be supplied for use with natural draught. The F55 and F85 have the option of a flue fan. Whilst certainly not essential, Zero Ridge do recommend that
you have a flue fan to reduce any potential problem with flue draught and to make installation and operation straight forward. By not having a flue fan you will need to ensure that you have enough flue height to draw the emissions from the chamber and expel them outside any down draught zone. This is no different to any other similar device or stove. By installing a fan flue you eliminate any potential flue problems, installation becomes easier and your heater will be far more efficient.