Hydrogen-based fuel cell systems are making strides in decarbonizing industry and mobility, with Purem by Eberspaecher introducing a tailored exhaust air system that ensures efficient water management and adherence to noise emission laws. These systems offer high energy density and operate without emissions, particularly beneficial for long-distance trucks and stationary uses where energy storage is critical. The exhaust air system components, including water separators, are designed to optimize water management and maintain fuel cell system efficiency. Additionally, custom silencers have been developed to reduce noise emissions in fuel cell vehicles, meeting customer demands and withstanding challenging environmental conditions. Practical tests, including simulations and trials with demo trucks, have shown promising results in noise reduction, prompting further testing on the track to validate the system's performance and benefits.