The sole proprietorship aims to sell and replace, as well as repair and convert heating and ventilation controls. Furthermore, the sole proprietorship aims to provide service and carry out repairs in the field of building technology (heating, plumbing and ventilation), carry out renovations and installations of heating, plumbing and ventilation systems, as well as sell building technology products for these systems. The exchange and installation of household appliances and the provision of service services for kitchen and bathroom are also part of the purpose of the sole proprietorship. In addition, the sole proprietorship aims to provide general maintenance of real estate and provide all related services.