These are the most common reasons drivers schedule AC service at our Folsom shop:
- Warm air from the vents: usually low refrigerant from a leak, a failed compressor, or an electrical fault that prevents the compressor from engaging.
- Weak airflow: often a failing blower motor, a clogged cabin air filter, or a stuck blend door actuator.
- Hissing, rattling, or clicking when the AC turns on: can point to a refrigerant leak, a failing compressor clutch, or debris in the condenser fan.
- Musty or foul odors from the vents: mold or mildew on the evaporator core, often resolved with an evaporator cleaning and a new cabin air filter.
- Visible leaks under the vehicle: oily green or yellow residue can point to refrigerant escaping from the condenser, lines, or evaporator.
- AC works one minute, not the next: typically a pressure switch, electrical relay, or borderline-low refrigerant cycling the compressor on and off.
We pressure test the system, scan for fault codes, and test the electrical signals to the compressor before recommending a repair. Topping off refrigerant on a leaking system is a temporary fix and a waste of money.
