HVAC components regulate temperature, humidity, and air quality within a vehicle's cabin for passenger comfort and driver visibility. These parts are essential for both heating and cooling systems, encompassing items like blower motors, heater cores, evaporators, condensers, and various ducting components found throughout the passenger compartment and engine bay. Proper functioning of the HVAC system ensures defrosting and demisting for safe operation in all weather conditions. Maintaining these parts is crucial for vehicle usability and passenger well-being. Examples within this HVAC category include MAN heater valves (MPN 81619750252, 81619750256) and condenser fans (MPN 81619750248, 81619750255) as well as complete HVAC units for Mercedes-Benz Trucks.