A chimney fan takes the smoke out and ensures that a drought is achieved quickly. It can be used to continuously adjust the drought of fireplaces, heaters, wood stoves and ovens. The fireplace operates at ideal efficiency and smoke does not spread indoors even in problematic situations. The efficiency of the fan is adjusted with a step transformer or a thyristor regulator that can be installed as close to the fireplace as possible. As the fan is installed on an insulation sheet on top of the chimney, it must always be used when there is a fire in the fireplace. Ventilating after the fire has died down is also recommended.The chimney fan fits fireplaces with a clear opening area of max. 0.35 m2. The minimum permitted size of the flue opening is 123 x 123 mm, maximum 160 x 160 mm. The highest allowed temperature of the gas is 200°C. The chimney fan is made of stainless materials. The housing is made of aluminium cast coated black and the fan propeller of silumin compound.