Within the emergency medical services system, an ambulance serves as far more than just a means of transport; it functions as a mobile, miniature emergency room. The temperature, humidity, and acoustic environment inside the vehicle directly impact a patient's condition as well as the precision of medical procedures performed by the crew. In recent years, DC electric air conditioning systems have been gradually replacing traditional engine-driven units, becoming a standard feature in modern ambulances and providing a quieter, more stable, and cleaner environmental foundation for emergency care.

​When ambulances, with their flashing blue and red lights, race through city streets, their urgent sirens always tug at the heartstrings of passersby. Public attention often focuses on the professional actions of the medical staff and the onboard emergency equipment. However, inside this mobile ark of life, a crucial system is silently laying the foundation for every rescue operation – the ambulance's dedicated air conditioning and life support environmental system.