The AC blows hot air only on the driver's side.
There are two possible scenarios that could be causing your problem:
As crazy as it sounds I have had low refrigerant charge in the AC system cause this, so it may just be that your AC needs to be recharged. The other possibility is that you have a temperature control door actuator that is malfunctioning; it may be broken and not allowing the door that controls the temperature on that side to adjust the temperature as it should.
Either way, I would suggest that you ask for help from one of the mechanics at YourMechanic to diagnose the problem with your AC system, and suggest the most appropriate repairs.
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