Keeping your car’s air conditioning system clean is essential for maintaining fresh, cool air and ensuring your system functions efficiently. Over time, dust, dirt, mould, and bacteria can build up in your aircon components, leading to unpleasant smells and reduced airflow. In this guide, we’ll walk you through how to clean air conditioning in car, covering both DIY methods and when to seek professional help.
Why Clean Your Car’s Air Conditioning System?
Your car’s air conditioning isn’t just for cooling—it plays a role in improving air quality by filtering dust, pollen, and pollutants. Over time, the system can become clogged, leading to issues such as:
- Unpleasant odours from bacteria and mould.
- Reduced airflow due to blockages in vents or filters.
- Health concerns, including allergies and respiratory irritation.
Regular cleaning not only restores comfort but also extends the life of your air conditioning system.
Step-by-Step: How to Clean Aircon in Your Car
Cleaning your car’s air conditioning system involves tackling different components like the aircon filter, condenser, evaporator, blower, and vents. Here’s a step-by-step breakdown:
Step 1: Clean the Cabin Air Filter
The cabin air filter is the first line of defence against dust and debris entering your car’s interior.
- Locate the filter: It’s usually found behind the glove box or under the dashboard.
- Inspect the filter: Remove it and check for dirt, dust, or debris.
- Clean or replace: If it’s mildly dirty, vacuum it gently or wash it with warm water and mild detergent. If it’s heavily soiled, replace it with a new filter.
Step 2: Clean the Aircon Vents
Dust and dirt often accumulate inside the air conditioning vents, reducing airflow.
- Use a soft-bristled brush or vent-cleaning tool to loosen debris.
- Spray an aircon cleaner or disinfectant into the vents to kill bacteria and eliminate odours.
- Turn on the fan at high speed to flush out loose particles.
Step 3: Disinfect the Aircon Blower
The blower circulates air through the system, so keeping it clean is essential.
- Access the blower motor (check your car manual for its location).
- Use a vacuum cleaner to remove dirt and debris around the blower.
- Spray a specialised aircon disinfectant directly into the blower intake while the fan is running to ensure even distribution.
Step 4: Clean the Evaporator Coil
The evaporator is a key component where heat is removed from the air. It can accumulate mould and bacteria over time.
- Use an evaporator cleaning spray designed for automotive systems.
- Insert the spray nozzle into the air intake (usually found near the dashboard or under the hood).
- Follow the product instructions, allowing the foam to expand and clean the evaporator coil.
Step 5: Maintain the Condenser
The condenser is located at the front of your car and is prone to dirt and debris from the road.
- Open the hood and locate the condenser near the radiator.
- Spray it with water using a hose or pressure washer (on a low setting) to remove dirt and grime.
- If the condenser is very dirty, use a mild cleaning solution and a soft brush to scrub it gently.
Step 6: Final Touches
- Run the air conditioning system at full power for 10–15 minutes to circulate the cleaner and remove any residues.
- Replace any removed components, such as the cabin air filter, and ensure everything is secured properly.
Common Mistakes to Avoid When Cleaning Your Car Aircon
- Skipping the Filter: Neglecting the cabin air filter reduces air quality even if other parts are cleaned.
- Using Harsh Chemicals: Always use aircon-safe cleaners to avoid damaging components.
- Ignoring Professional Help: Some issues, like refrigerant leaks or deep mould infestations, require professional attention.
DIY or Professional Cleaning: Which is Best?
While DIY cleaning is effective for routine maintenance, professional services are recommended for:
- Persistent odours or airflow problems.
- Deep cleaning of hard-to-reach components.
- Ensuring optimal refrigerant levels for cooling performance.
For more info on our professional car aircon cleaning service, click here.
How to Prevent Your Car Air Conditioning from Getting Dirty
Regular cleaning is crucial, but taking preventative measures can significantly reduce the buildup of dust, mould, and bacteria in your air conditioning system. Here’s how to maintain a clean and efficient system:
- Run the Air Conditioning Weekly:
Even during colder months, running your aircon for a few minutes weekly prevents moisture buildup, which can lead to mould and bacteria growth. - Replace the Cabin Air Filter Regularly:
Change the filter every 12–24 months or as recommended by your vehicle’s manufacturer to ensure clean airflow. - Keep the Car Interior Clean:
Regularly vacuum your car’s carpets and seats to minimise dust and debris entering the air vents. - Park in Shaded Areas:
Parking in direct sunlight can create a humid environment in your car, promoting mould growth in the aircon system. - Use the Recirculation Mode Sparingly:
While recirculation improves cooling efficiency, using it constantly can trap moisture in the system. Alternate with fresh air mode for balance. - Regular Servicing:
Get your car aircon regularly serviced and maintained by our professional car aircon technicians. Call us now.
Frequently Asked Questions
1. How often should I clean my car’s air conditioning system?
It’s recommended to clean the system annually or whenever you notice reduced airflow, unpleasant smells, or poor cooling performance.
2. Can I clean my car aircon filter, or do I need to replace it?
You can clean some filters if they’re only mildly dirty. However, heavily clogged or damaged filters should always be replaced for optimal performance.
3. Is it safe to use DIY aircon cleaning sprays?
Yes, provided you use sprays specifically designed for automotive air conditioning systems. Avoid harsh chemicals that could damage components.
4. How do I know if my car aircon needs professional cleaning?
If you notice persistent odours, poor cooling despite cleaning, or signs of refrigerant leaks, it’s time to consult a professional technician.
5. Does cleaning the aircon improve cooling efficiency?
Absolutely! Cleaning removes dirt and blockages, allowing the system to circulate air more effectively, which improves cooling performance.