why does my Honda Accord's air conditioning smell musty

Solution

1. Preparation

• Gather tools and supplies.
• Ensure the vehicle is parked on a level surface with the engine off.
• Disconnect the battery to avoid any electrical shorts.

2. Replace Cabin Air Filter

• Sub-steps:
  1. Locate the cabin air filter access panel (usually under the glove compartment).
  2. Remove the screws or clips securing the panel.
  3. Slide out the old cabin air filter.
  4. Inspect the filter housing for any debris or mold and clean if necessary.
  5. Insert a new cabin air filter, ensuring proper orientation.

Tools Required: Screwdriver set

3. Clear Evaporator Drain

• Sub-steps:
  1. Locate the evaporator drain tube under the vehicle.
  2. Use compressed air or a flexible wire to clear any blockages.
  3. Ensure water flows freely from the drain when the A/C is on.

Tools Required: Compressed air source, flexible wire

4. Clean Ductwork and Evaporator

• Sub-steps:
  1. Use a disinfectant spray designed for HVAC systems and apply it into the air intake with the A/C running.
  2. Turn on the A/C and allow the disinfectant to circulate through the system for 10-15 minutes.
  3. Turn off the A/C and leave the windows open to air out the vehicle.

Tools Required: Disinfectant spray for HVAC systems