Warm Air If your AC is blowing warm air, it may indicate a problem with the compressor or a refrigerant leak. Weak Airflow Poor airflow could be a sign of a clogged filter, ductwork issues, or a failing motor. Frequent Cycles Short cycling, or your AC turning on and off frequently, can indicate an issue with the thermostat, a refrigerant leak, or electrical problems. High Humidity Your AC should regulate indoor humidity. If your home feels more humid than usual, there may be an issue with the system. Water Leaks Leaks around your AC unit could indicate a blocked or broken drain tube. Unusual Noises Banging, rattling, or grinding noises can indicate a mechanical problem or debris in the system. Foul Odors Musty or burning smells can suggest mold growth or electrical issues within the unit.