Where is the car air conditioning evaporator located?
4 Answers
The car air conditioning evaporator is installed inside the evaporator box, which is located behind the dashboard on the passenger side, usually behind the cabin air filter. The car air conditioning refrigeration system consists of components such as the compressor, condenser, receiver-drier, expansion valve, evaporator, and blower. Below is relevant information: 1. The function of the evaporator is to serve as the place where the refrigerant changes from liquid to gas (i.e., evaporation) to absorb heat. The car air conditioning refrigeration system includes components like the compressor, condenser, receiver-drier, expansion valve, evaporator, and blower. The evaporator is a device that achieves heat exchange between the outside air and the substance inside the pipes by covering a row of coiled pipes with thin metal sheets for heat dissipation. 2. The evaporator is the heat exchange container of the car air conditioning system. The source evaporator is hidden inside the evaporator box and is generally not easily visible. Under normal circumstances, the surface temperature of the evaporator is very low, but it only forms a lot of condensation without frosting or freezing. Its principle is similar to that of the engine's radiator (the only difference is that the water in the radiator remains in liquid form), so it is often installed at the front of the car, together with the radiator, to enjoy the cool breeze from the front.
I recently removed the evaporator core during a car repair. It's located beneath the dashboard, right behind the firewall. The position is quite concealed by design, mainly to facilitate connections with the AC system and air ducts, allowing cold air to quickly circulate inside the cabin. After several attempts, I found it positioned in front of the front passenger compartment, near the engine bulkhead. The evaporator core is a crucial component for AC refrigeration, containing copper tubes and a small fan that absorbs heat to cool the air. Without regular cleaning, it can easily get clogged or develop mold, leading to unpleasant odors from the vents or water leakage issues. As an experienced driver, I recommend checking it every two years. When cleaning, you can remove the blower assembly, but be careful not to damage the wiring during the process.
The evaporator is usually hidden beneath the dashboard, facing the front area of the passenger compartment. While troubleshooting AC issues, I noticed the space there is compact to maximize airflow efficiency inside the vehicle. Drivers rarely notice it during normal operation, but weak AC cooling or moisture buildup often indicates a clogged evaporator or refrigerant leak. DIY inspection is difficult—it typically requires tools to partially remove the glove box. Maintaining cleanliness is crucial for health, as mold growth can affect the respiratory system.
The evaporator core is located inside the dashboard, near the front close to the engine compartment firewall. In my vehicle, the mounting point is right above the driver's footwell area, requiring removal of some panels for visibility. Its primary function is heat exchange to cool the air. Without proper maintenance, AC efficiency drops and pipe corrosion may occur. Ensuring proper ventilation around its location is crucial.
