The idea behind the Hawu RC-2000 Roll Chimney was to develop a pipe solution for new heaters that was as light and portable as possible. Together with Pasi Ylirisku, Tommi Vahtera accepted the challenge of creating a chimney that was lighter, smaller and superior to the existing solutions in terms of usability. The chimney material was chosen after a thorough study of the available options, leading to the discovery of a brand new chimney material and design.
We can now honestly say that the stove chimney has been reinvented. Instead of the conventional set-up of several pipe sections, the HAWU Roll Chimney is one-piece. The HAWU Roll Chimney is made of fireproof steel, giving it a long service life. The chimney material is embossed by cold-rolling, which doubles the chimney’s surface area and stiffens it. The greater surface area increases the heat-giving surface, making the chimney more effective for heating. The embossed patterns inside the chimney produce microvortices in the combustion gases, increasing the draught and reducing soot adhesion. The coupling rings (bands) are made of spring steel, sliding smoothly along the chimney surface as needed when the chimney is erected or packed up.
Rolled up for transport, the chimney is a 30-cm roll weighing just 1 kg, easy to carry inside the stove or in a backpack pocket. Spread out, the chimney is 2 m long and compatible with HAWU tents as well as the Savotta sauna tent, among others. Roll chimneys can also be linked together to form longer chimneys. A chimney consisting of a few roll chimneys is suited to even a large tent.