The core activity of Giston includes the planning, implementation and maintenance of heating, ventilation and sanitary systems. This includes in particular: Heating: planning and installation of heating systems such as heat pumps, wood and pellet heating systems, oil heating systems, as well as room regulation and heating control via WLAN or GSM. Ventilation: planning and installation of ventilation systems for new buildings, ventilation service and consulting, wet cell and kitchen exhaust, controlled residential ventilation, commercial ventilation, kitchen and restaurant ventilation, as well as ventilation cleaning and humidification. Sanitary: planning and installation of sanitary work for new buildings, sanitary service and consulting, bathroom renovations and conversions, as well as maintenance and service work. The company offers these services for new buildings, renovations and existing buildings and also provides a 24/7 emergency service for its customers.