Infiniti G35 2003-2006 HVAC Specifications

The HVAC system in the 2003-2006 Infiniti G35 is compatible with select aftermarket parts, but it is recommended to use OEM parts for optimal performance. Aftermarket components like blower motors, condensers, and compressors may fit, but compatibility varies by brand. Always verify part numbers and specifications with the manufacturer or a trusted supplier to ensure proper fit and function.

Regular maintenance for the HVAC system includes inspecting and replacing the cabin air filter every 15,000-30,000 miles, checking refrigerant levels annually, and ensuring the compressor and blower motor are functioning properly. Additionally, inspect hoses and seals for leaks or wear. Proper maintenance ensures efficient cooling, heating, and air circulation, extending the system's lifespan.

To replace the cabin air filter, locate the filter housing behind the glove compartment. Open the glove box, remove the retaining screws, and gently lower the glove box. Unclip the filter housing cover, remove the old filter, and insert the new one, ensuring it faces the correct direction. Reassemble the housing and glove box. This process takes about 15-20 minutes.

If your HVAC system is blowing warm air, check the refrigerant levels, as low refrigerant is a common cause. Inspect the compressor for proper operation and ensure the condenser is not clogged. Additionally, verify that the blend door actuator is functioning correctly. If issues persist, consult a professional for a thorough diagnostic.

To optimize HVAC performance, regularly clean or replace the cabin air filter, ensure refrigerant levels are adequate, and inspect the system for leaks. Use the recirculation mode to improve cooling efficiency and reduce strain on the system. Park in shaded areas to minimize heat buildup, and have the system professionally serviced every 2-3 years.