Prevent Car AC Failure and Maximize Cooling

Cost Savings

Checklist Tasks

• Check AC compressor clutch with engine running to detect signs of early failure.
• Inspect condenser fins for bends or blockages to maintain airflow and cooling.
• Scan AC lines and fittings with UV light to spot leaks before refrigerant loss.
• Test vent temps at max cooling to find low or contaminated refrigerant.
• Listen for unusual noises after shutdown to catch blend door actuator issues.
• Examine AC belt for cracks or glazing to prevent compressor interruptions.
• Clean and check cabin air filter for debris to prevent airflow loss and odors.
• Check for oily residue at hose connections to detect refrigerant or oil leaks.
• Verify all fan speeds to ensure proper cooling and avoid circuit overload.
• Inspect evaporator drain tube for clogs to prevent water pooling and mildew.
• Monitor system pressures to find blockages or abnormal conditions if possible.
• Test defrost mode for quick windshield clearing to reveal hidden AC faults.