Tempering with induction is a clean technology with high energy production, without the use of a flame or contact, especially in dispersive methods such as carburising furnaces as the heat is distributed with precision only where and when necessary. 
Furthermore, tempering with induction normally uses a polymer emulsion, thereby avoiding the use of polluting oil baths. In addition to obvious advantages for the environment, these features contribute to maintaining a safe, sound and productive work environment.