Infiniti G20 1999-2002 HVAC Specifications

The HVAC system in the 1999-2002 Infiniti G20 is compatible with select aftermarket parts, but it is recommended to use OEM components for optimal performance. Aftermarket parts must meet the specifications of the original system, including refrigerant type (R134a), voltage requirements, and physical dimensions. Always verify compatibility with the manufacturer or a certified technician before installation.

Regular maintenance for the HVAC system includes checking and replacing the cabin air filter every 15,000-20,000 miles, inspecting refrigerant levels annually, and ensuring the compressor and blower motor are functioning properly. Additionally, clean the evaporator and condenser coils every 30,000 miles to maintain efficiency. Schedule professional inspections every 2-3 years to address potential issues early.

To replace the cabin air filter, locate the filter housing behind the glove compartment. Remove the glove compartment by unscrewing the mounting screws and gently pulling it down. Open the filter housing cover, remove the old filter, and insert the new one, ensuring it is oriented correctly. Reassemble the glove compartment and test the HVAC system to confirm proper airflow.

If the HVAC system is not blowing cold air, first check the refrigerant levels and recharge if necessary. Inspect the compressor clutch for engagement and ensure the blower motor is functioning. Check for leaks in the refrigerant lines and verify the thermostat settings. If issues persist, consult a professional technician to diagnose potential electrical or mechanical failures.

To optimize HVAC performance, regularly clean or replace the cabin air filter, ensure refrigerant levels are adequate, and inspect the condenser and evaporator coils for debris. Use the recirculation mode to reduce strain on the system and improve cooling efficiency. Park in shaded areas to minimize heat buildup and consider using a sunshade to protect the interior.