Why is one side of the car air conditioner blowing cold air while the other side blows hot air?

[BrandonAnn]

Reasons for uneven temperature distribution in car air conditioning: 1. Uneven temperature settings: Dual-zone air conditioning requires separate temperature adjustment for driver and passenger sides. If one side is set too low, it may cause temperature imbalance. 2. Clogged heater valve: Automatic dual-zone systems use two water pipes to the heater core - if one pipe gets blocked while the other remains clear, it creates temperature differences. 3. Malfunctioning AC control unit: This can cause failure in regulating the hot/cold pipe valves. The car air conditioning system is designed to cool, heat, ventilate and purify cabin air, providing comfort for occupants while reducing driver fatigue and improving road safety. Modern AC systems have become one of the key indicators for evaluating a vehicle's complete functionality.