CO2 neutral heating for connection to the central heating system is the basis for energy efficiency and sustainability. Besides radiating an agreeable warmth wodtke’s TIO wood-burning stove delivers 70% of its thermal energy to the heating system via a water heat exchanger. Its high thermal delivery to water predestines it for use in combination with solar energy in low energy or passive houses. Together with wodtke’s thermoregulation system featuring automatic combustion air supply, the geometry of the firebox ensures low-emission combustion. TIO stands out for its clear-cut design based predominantly on steel and smart functionality.