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Is It Time to Service Your Car AirCon? Here's How to Do It

Updated: Oct 17, 2023

Air conditioning has become an essential feature in modern vehicles, providing comfort and convenience for drivers and passengers alike. However, like any other component of your car, the air conditioning system also needs regular servicing to perform optimally. This article will guide you through the signs that indicate it's time for a service, how to do it yourself, and tips for maintaining your car's air conditioning system.


Imagine driving on a hot summer's day with a faulty air conditioner in your car. The discomfort would be unbearable. To avoid such scenarios, understanding the importance of servicing your car's air conditioning system is crucial. A well-maintained air conditioner not only provides a comfortable ride but also prevents costly repairs in the future.

car air-con not working = grumpy baby
car air-con not working = grumpy baby

Importance of Servicing Car AirCon

Your vehicle’s air conditioner plays a critical role in ensuring a comfortable drive, especially during hot weather. Over time, the system can lose its efficiency due to accumulated dust, dirt, and bacteria. Regular servicing helps to maintain the system’s optimal performance by cleaning these contaminants, checking for leaks, and ensuring the right amount of refrigerant. Proper maintenance also extends the life of the system, preventing premature failure and costly replacements.

Signs That Indicate It's Time to Service Your Car AirCon

There are various symptoms that show your car's air conditioner needs servicing. Some of the most common ones include:

  • Blowing Warm or Hot Air: This is perhaps the most noticeable sign that there's an issue with your air conditioner. If your vehicle is blowing warm or hot air instead of cold, it could indicate a low level of refrigerant or a problem with the evaporator core.

  • Strange Odors: If you notice a foul smell coming from the vents when you turn on the AC, it might indicate the presence of mildew or bacteria in the system. This could be a result of water accumulation due to blockages in the drainage pipes.

  • Loud Noises: If you hear strange noises coming from the AC unit when it's turned on, it could suggest a problem with the internal components of the system. This might require a professional inspection to determine the source of the noise.

  • Poor Airflow: If the airflow from the vents is weaker than usual, it might suggest a problem with the blower motor or the air filters. These components need to be checked and cleaned or replaced if necessary.

If you notice any of these signs, it's best to schedule an appointment for an AC service immediately.

How to Service Your Car AirCon

Here's how to go about servicing your car aircon:

Gather the Necessary Tools and Materials

You will need the following tools and materials: a socket set, screwdrivers, a car manual, air conditioning cleaner, a new air filter (if necessary), and refrigerant. You may also need a pair of gloves and safety glasses for protection. It's important to check your car's manual to determine the specific type of refrigerant required for your vehicle.

Locate the Aircon System in Your Car

The air conditioning system is typically located under the hood of your car. Refer to your car's manual to find the exact location. The main components you'll be working with are the compressor, condenser, receiver, evaporator, and expansion valve.

Clean the Air Conditioning System

Using the air conditioning cleaner, spray it into the system according to the instructions on the can. This helps to remove dust, dirt, and bacteria that may have accumulated over time.

Check and Replace the Air Filter

The air filter plays a crucial role in maintaining the quality of the air inside your car. Over time, it can get clogged with dust and other particles, reducing the effectiveness of your air conditioner. Therefore, it's important to check the air filter regularly and replace it if necessary.

car aircon filter
car aircon filter

Check and Refill Refrigerant Levels

The refrigerant is what cools the air that comes out of your air conditioner. Over time, the level of refrigerant can decrease, affecting the performance of your AC. Use a refrigerant gauge to check the current level and refill as necessary, making sure not to overfill.


Test the Air Conditioning System

Once you've completed the above steps, start your car and turn on the AC to test it. Listen for any unusual sounds and check the temperature of the air coming out of the vents. If the air is cool and there are no strange sounds, you've successfully serviced your car's air conditioner.

Tips for Maintaining Your Car AirCon

Maintaining your car's air conditioner doesn't have to be a daunting task. Here are some simple tips to keep your AC running smoothly:

Regularly Clean and Inspect the Air Conditioning System

Regular cleaning and inspection can help prevent major issues with your AC. Make it a habit to clean the system and check for any visible issues like leaks or damage to the components.

Use the Air Conditioning System Regularly

Even in colder months when you might not need to cool your car, it's beneficial to run the AC occasionally. This helps to circulate the refrigerant, which keeps the seals soft and prevents them from drying out and cracking.

Park Your Car in Shaded Areas When Possible

Excessive heat can put a strain on your car's AC system. Whenever possible, try to park your car in shaded areas to minimize the impact of heat.

Seek Professional Help When Needed

While you can do basic maintenance yourself, certain issues with your car's AC might require professional attention. If you're unsure about anything or the problem persists despite your efforts, don't hesitate to seek help from a professional mechanic.


Your car's air conditioning system plays a vital role in keeping you comfortable while on the road. Regular servicing not only ensures it works effectively but also extends its lifespan, preventing costly repairs or replacements in the future. With the right tools and a bit of know-how, you can service your car's aircon yourself. Remember to check for signs that indicate it's time for a service, gather the necessary tools and materials, clean the system, check and replace the air filter, check and refill refrigerant levels, and test the system afterwards.

Contact us at 97127445 or visit our car workshop at Caltex 3781 Jalan Bukit Merah and our friendly mechanics will be happy to assist you.

Caltex Havoline autoPro Workshop at 3781 Jalan Bukit Merah
Caltex Havoline autoPro Workshop at 3781 Jalan Bukit Merah

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