why does my Ford F-150 Fourteenth Generation (2021-present) AC only blows hot air

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on the electrical components.
• Allow the engine to cool down before beginning work.

2. Inspect and Replace Refrigerant

• Attach the manifold gauge set to the low and high-pressure service ports.
• Check the refrigerant levels; if low, recover any remaining refrigerant using a recovery machine.
• Recharge the system with the correct type and amount of refrigerant (R-134a or R-1234yf, depending on the specific model).
• Run the AC system to circulate the refrigerant and check for proper operation.

3. Test and Replace AC Compressor

• If the compressor does not engage, test the electrical connections and fuses related to the AC system.
• If faulty, remove the AC compressor:
  • Disconnect the refrigerant lines and electrical connectors.
  • Unbolt the compressor from the engine bracket.
  • Replace with a new compressor, ensuring it matches OEM specifications.
• Reconnect refrigerant lines and electrical connectors securely.

4. Replace Cabin Air Filter

• Locate the cabin air filter compartment, typically behind the glove box.
• Remove the glove box to access the filter.
• Replace the old cabin air filter with a new one, ensuring it is oriented correctly.

5. Check and Replace Blend Door Actuator

• Access the blend door actuator, typically located near the HVAC housing.
• Remove any necessary panels to reach the actuator.
• Test the actuator for functionality; if defective, replace it with a new actuator.
• Reassemble any panels removed during access.