What Causes One Side of the Car Radiator to Be Hot and the Other Side Cold?

[LaRhett]

Here are the reasons why one side of the car's heating system is hot and the other side is cold: Specific reasons: Damaged air filter; insufficient refrigerant; blockage in the heater core channel leading to inadequate hot water flow; the air duct on the cold side may not be open or is blocked. It is necessary to check whether the control flap cable for the heater core's hot and cold air is detached, whether the heater fan is damaged, or whether the flap has fallen off. Heating system: The heating system simply utilizes the car's internal heat circulation process and does not require the activation of the car's compressor. The heating is generated by the heat dissipated after the engine is running. A small fan in the engine compartment blows the heat collected from the engine cooling system into the car's interior.