Sure Draft chimney and flue improver is a unique cowl made specifically for use on chimneys and flues where hot exhaust gases are expected
Many chimneys and flues experience occasional backdrafting when winds driving from a specific direction are interfered with by nearby buildings, trees or natural topography. This is a very uncomfortable experience for house occupants, as smoke is driven back into the home. Poor chimney design can also be a cause of backdrafting but there is no easy solution in this case.
The product utilises an internal heat shield to protect the bearing and incorporates an external aluminium heat sink to also control the bearing temperature. The Tandaco bearing is packed with heat tolerant grease.
Sure Draft prevents downdraft by causing a positive updraft in the flue or chimney. It is important that the turbine be well exposed to the wind to minimimse eddies developing on the leeward side.