Truck's AC has poor cooling performance—it means this part needs cleaning.

In summer, the most common repair problems for trucks are high water temperature and poor air conditioning cooling effect. Some trucks have real faults, such as a broken thermostat causing high water temperature, or a lack of fluorine causing poor cooling effect. However, a considerable number of trucks have no damaged parts, but only dirty condensers and water tanks, which can be restored to normal after cleaning.

The water tank and condenser are placed together, both at the front of the truck, with the condenser in front and the water tank in the back. Both components dissipate heat into the atmosphere. The coolant and refrigerant absorb the heat from the engine or the truck, circulate and dissipate it. If there is a lot of dust and floating objects in the place where the truck is used, it is easy to clog the surface of the water tank, resulting in poor heat dissipation performance. 

Since summer temperatures are high, the engine also runs very hot and needs to dissipate a significant amount of heat. This demands a robust cooling system. If the radiator gets clogged, its cooling efficiency decreases, leading to overheating. Once a blockage occurs and causes issues, the radiator must be removed and flushed with water. For stubborn deposits, a small brush can be used to scrub them away.  

The condenser is at the front of the truck, and it requires a higher heat dissipation performance. Once the air conditioner is turned on, the high-speed fan will start immediately to cool the condenser. The condenser is like the outdoor unit of a household air conditioner, and needs to have good heat dissipation performance. If it is blocked, the heat dissipation performance will decrease. As the blockage becomes more and more serious, the air conditioner will simply stop cooling. 

The blockage in these two areas is caused by long-term lack of cleaning and driving in environments with excessive floating debris and dust. Therefore, during summer, it's advisable to thoroughly rinse these two spots. However, avoid spraying water directly near the fan's electrical connectors to prevent short circuits. Ideally, flush these areas once a year-this will prevent large-scale blockages for years and ensure the cooling system remains at best efficiency.  

Some truck owners also install a protective screen in front of the condenser, which is a feasible solution. This eliminates the need for frequent removal and cleaning of the radiator and condenser, as the screen blocks most debris and floating debris. When it gets dirty, simply remove the screen for cleaning-quick and convenient.