Fast firing furnace for energy efficient burning and sintering of solar cells. The modular design shows clear cubic structures with strong material and colorful contrasts. Transparent security glass doors offer perfect visual function control in the core areas. New developments include the automatic opening of the drying chamber system for increased process safety, the innovative heat recovery system and an integrated touch screen with an adjustable ergonomic keyboard. In addition to the improved usability, ambitious design-to-cost goals are the outstanding facts in this design development.