Question: How do you clean a car’s AC evaporator without removing it?
Answer:
To clean your car’s AC evaporator without removing it, remove the glovebox and HVAC box covering, then use compressed air and a vacuum to blow out and clean up any built up dirt and debris.
If you’re like most of us, you probably need a bit more guidance to accomplish this task, so we’ve assembled this step-by-step guide.
How to clean your car’s AC evaporator without removing it
Step 1: Gather your tools and materials
To clean your car’s AC evaporator, you’ll need:
- Screwdrivers (Phillips head or hex head, depending on your car)
- Socket wrench
- Compressed air
- Vacuum cleaner with hose attachment
Step 2: Access the evaporator
Open your glovebox, then squeeze the rearward section to detach it from the dashboard. In some vehicles, you might need to remove a couple of screws, typically Phillips or hex heads.
After removing the glove box, examine the area directly behind it. Look for a large, usually black, plastic box—this is the HVAC box.
Remove the access panel or cover using a screwdriver or socket wrench. Inside, you should see one or two small radiators. If your HVAC has two radiators, the A/C evaporator coil will be the larger one.
Step 3: Use compressed air to blow out dirt and debris
Use compressed air to blow out any dirt and debris from the evaporator coil. Aim the nozzle of the compressed air canister at the coil and blow from multiple angles to ensure thorough cleaning.
Use a vacuum cleaner with a hose attachment to vacuum up any remaining loose debris. This will help you collect the dirt dislodged by the compressed air, ensuring a cleaner coil.
Step 4: Reassemble
Once the evaporator is clean, replace the HVAC box covering and secure it with screws. Reattach the glovebox by screwing or clipping it back into place.
Step 5: Test the AC System
Start your car and turn on the AC to its highest setting. Check for any unusual noises or performance issues. If everything runs smoothly, your cleaning was successful.
Additional Tips for Maintaining Your Car’s AC System
Cleaning your car’s AC evaporator without removing it is a great way to keep your system running efficiently. Here are a few extra tips to ensure long-term maintenance:
- Regularly replace cabin air filters: A clean cabin air filter prevents dirt and debris from reaching the evaporator coil.
- Run the AC frequently: Regular use of the AC system helps to prevent mold and mildew buildup.
- Schedule professional maintenance: Periodic check-ups by a professional can help maintain the overall health of your AC system.
By following these steps and maintenance tips, you can ensure your car’s AC system stays clean and efficient, providing you with a comfortable driving experience.
Sarah Gray is an insurance writer with nearly a decade of experience in publishing and writing. Sarah specializes in writing articles that educate car owners and buyers on the full scope of car ownership—from shopping for and buying a new car to scrapping one that’s breathed its last and everything in between. Sarah has authored over 1,500 articles for Jerry on topics ranging from first-time buyer programs to how to get a salvage title for a totaled car. Prior to joining Jerry, Sarah was a full-time professor of English literature and composition with multiple academic writing publications.
Expert insurance writer and editor Amy Bobinger specializes in car repair, car maintenance, and car insurance. Amy is passionate about creating content that helps consumers navigate challenges related to car ownership and achieve financial success in areas relating to cars. Amy has over 10 years of writing and editing experience. After several years as a freelance writer, Amy spent four years as an editing fellow at WikiHow, where she co-authored over 600 articles on topics including car maintenance and home ownership. Since joining Jerry’s editorial team in 2022, Amy has edited over 2,500 articles on car insurance, state driving laws, and car repair and maintenance.
