AC Cold On One Side Only
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 TechnicianCommon causes
- Failed blend-door actuator on one side
- Stuck or broken blend door
- Climate control module fault
- Wiring or connector issue
- Calibration lost after a battery disconnect
Frequently asked questions
Why is only one side cold?
Dual-zone systems use separate doors and actuators per side; when one actuator or door fails, that side stops switching between hot and cold air.
Does this need a full AC repair?
Usually not — it's typically a small actuator or a recalibration, not a refrigerant or compressor problem.
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