

On a dual-zone system, one side blows cold while the other blows warm. This is usually a blend-door actuator or control problem rather than the AC itself.
Find a ProviderDual-zone systems use separate doors and actuators per side; when one actuator or door fails, that side stops switching between hot and cold air.
Usually not — it's typically a small actuator or a recalibration, not a refrigerant or compressor problem.
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