The core activity of Retas Schema AG is the planning, execution and commissioning of control and regulation technology for heating, ventilation and air conditioning (HVAC) systems as well as building automation. This includes in particular: creation of electrical schematics and software, delivery and installation of control and field devices as well as switchgear, commissioning and troubleshooting of systems, consulting and execution of projects in the field of HVAC and building automation. The company offers its services primarily for medium-sized and smaller projects in the Swiss Plateau region.