The costs for heating and hot water represent the largest share of the end-customer’s energy bill. Rising energy costs make it attractive for end-customers to invest in efficient and sustainable use of energy. ZONOS™ enables individual control and monitoring of room temperatures and thus an optimization of the heat consumption by combining the information from various sensors (e.g. humidity and temperature sensors). It is easy to configure the system to e.g. to use door/window contact to switch off the heating when a window is open. Studies have shown that heating costs can be significantly reduced in this way. Thus, ZONOS™ contributes to a sustainable and efficient use of energy and avoids high charges at the end of a heating season.