Software for sanitary, heating and air-conditioning (SHK) or software for ventilation construction provides support for all common operating procedures such as measurement recording. As a rule, it offers site-related hourly billing for fitters and interfaces for DATANORM, ELDANORM, GAEB, ZVEH, etc. Furthermore, customer service-related programme parts such as maintenance management with scheduler, route optimisation and system information (boiler, burner, pump, etc.) are usually also part of the programmes for the SHK sector.