Energy supplies have always been a premium commodity that greatly affect the operating viability of our plants, now more than ever our processes must reduce exposure to the ever-increasing costs associated with energy usage. This is a complicated scenario as we also have a need to use energy more cleanly to comply with the latest environmental legislation. The cast houseCast house is no exception to optimised efficiency demands, the big question is, how do we maintain high-performance cast housesCast house while reducing the energy we use and can this be done while respecting a need to reduce the emissionsEmissions from cast houseCast house equipment. In this paper, MechathermMechatherm will share its experiences in addressing these issues, including our recent experience in replacing a traditional natural gas combustion system with a hydrogenHydrogen fuelled burner system. What are the challenges faced in implementing such projects? And do the results meet the efficiency and environmental challenge?