An increasing number of households are putting their faith in renewables for their heating provision. For this, floorstanding cylinders from STIEBEL ELTRON are an important link. The floorstanding SB 1002 AC combi cylinder can be operated with several energy sources. For example, the sealed unvented cylinder can be fitted easily with an immersion heater and a solar indirect coil. Or alternatively, combine them with a heat pump. This makes it easy to transfer energy from different origins into a single system, making the energy useful for heating domestic hot water in the kitchen and bathroom, alternatively in commercial operations. The cylinder is made from steel with a special enamel coating on the inside.