The MiraSolaris heating system is a solution for the intelligent use of thermal solar energy in low-energy buildings. The MiraSolaris Eco-Habitat System® in well-insulated solid house constructions takes advantage of the good heat storing properties of concrete. The concrete core activation makes possible an energy optimised usage of thermal solar energy for room temperature control with annual savings in heating costs of up to 50%. It provides min. 50% of the space heating and min. 70% of the hot water requirement. The system reduces CO2-Emmissions by min. 1/2 tonne compared to a gas heating system.