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Why does a 1992 Buick Park Ave AC blows hot on one side without having dual zone controls?

The 1992 Buick Park Avenue does not have a dual-zone climate control system. However, it does have a heater control valve that regulates the flow of hot water to the heater core. If the heater control valve is not working properly, it can cause the AC to blow hot air on one side of the vehicle.

Here are some other possible causes of hot air coming out of one side of the AC vents in a 1992 Buick Park Avenue:

* A refrigerant leak

* A faulty compressor

* A clogged expansion valve

* A bad blend door actuator

If you are experiencing hot air coming out of one side of the AC vents in your 1992 Buick Park Avenue, it is important to have the vehicle inspected by a qualified technician to diagnose the problem and make the necessary repairs.