why does my Porsche 911 992 (2019-Present) AC blow hot air?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the battery to avoid any electrical issues.

2. Check Refrigerant Levels

• Tools Required: Manifold gauge set
• Attach the manifold gauges to the service ports of the AC system.
• Assess the low and high-pressure readings; refer to the manufacturer’s specifications for proper values.
• If the refrigerant is low, proceed to the next step.

3. Recharge AC System

• Tools Required: Refrigerant and charging hose
• Locate the low-pressure service port and attach the charging hose.
• Slowly add the refrigerant until the system reaches the appropriate pressure as per specifications.
• Monitor the gauge to avoid overcharging.

4. Inspect and Replace Components

• Tools Required: Socket set, pliers
• If the compressor is not engaging, check the electrical connections to the compressor.
• Inspect the AC relay and fuses; replace any faulty components.
• If the compressor is faulty, remove it by disconnecting the refrigerant lines and electrical connectors, then install the new compressor following manufacturer’s instructions.

5. Replace Cabin Air Filter

• Tools Required: Screwdriver (if necessary)
• Locate the cabin air filter housing, typically behind the glove box.
• Remove the filter and inspect for clogs or contamination.
• Install a new cabin air filter and ensure it is seated properly.