Cleaning your car’s air conditioning

One aspect often overlooked is the cleanliness of your car’s air conditioning system. In this blog post, we will explore the process of cleaning your car’s air conditioning, how it eliminates unpleasant smells, the possible causes of these odours, the recommended cleaning frequency, and what you can do to maintain a fresh atmosphere in the meantime.

Why is cleaning necessary?

Cleaning the car’s air conditioning system effectively eliminates any unpleasant odours that may have built up over time. A thorough cleaning will tackle the root causes of these smells and prevent their recurrence. These can include:

• Mould and mildew

The dark and damp environment of the air conditioning system can promote the growth of mould and mildew, resulting in musty odours.

• Bacterial growth

Bacteria can thrive in the evaporator core, leading to foul smells in the cabin.

• Accumulated dirt and dust

Over time, dust, pollen, and other contaminants can accumulate in the air filters and evaporator, causing a stale smell.

How to clean your car’s air conditioning

Attempting to clean your car’s air conditioning will make a big difference, though it’s important to remember that a professional clean will deliver more thorough, long-lasting results. Here is a guide to the steps you can take:

• Step 1: Turn off the engine and open the car windows.
• Step 2: Locate the air intake vents, typically found near the windshield.
• Step 3: Remove any debris or leaves from the vents using a soft brush or vacuum cleaner.
• Step 4: Inspect the cabin air filter and replace it if necessary. A dirty filter can contribute to unpleasant smells.
• Step 5: Mix a mild detergent or a specialised air conditioning cleaner with water according to the product instructions.
• Step 6: Dip a clean cloth or sponge into the cleaning solution and gently wipe the interior surfaces of the air vents.
• Step 7: Turn on the engine and set the air conditioning system to the highest fan speed and coldest temperature.
• Step 8: Spray the cleaning solution directly into the air intake vents while keeping the car windows closed.
• Step 9: Let the air conditioning system run for a few minutes to circulate the cleaning solution.
• Step 10: Finally, turn off the engine, open the windows, and allow the car to air out before driving.

The benefits of a professional clean

Professional cleaning typically involves more thorough and comprehensive steps to address specific issues. There are a number of additional steps that a professional mechanic will be able to carry out.

• Evacuation of refrigerant

A professional technician can evacuate the refrigerant from the air conditioning system. This step is necessary to access and clean various components effectively.

• Cleaning the evaporator core

The evaporator core is a common area where mould, mildew, and bacteria can accumulate. A professional cleaner or foam is used to thoroughly clean and disinfect the evaporator core.

• Cleaning air ducts and vents

Professionals may use specialised tools and equipment to clean the air ducts and vents thoroughly. This step ensures that any debris, dust, or contaminants are effectively removed from the entire system.

• Disinfecting and deodorising

To eliminate persistent odours, a professional cleaner or disinfectant may be applied to the evaporator, air ducts, and vents.

• Recharging the system

After the cleaning process is complete, the technician will recharge the air conditioning system with the appropriate refrigerant and check for any leaks or other issues.

How often should air conditioning be cleaned?

Regular cleaning of your car’s air conditioning system is vital for the best performance. It is generally recommended to clean the system at least once a year. However, if you notice persistent unpleasant smells or reduced cooling efficiency, consider cleaning it more frequently or consulting a professional mechanic for assistance.

What to do between cleanings

While waiting for your next cleaning session, there are several things you can do to maintain a fresh atmosphere in your car:

1. Regularly clean and vacuum the interior to minimise dust and debris.
2. Avoid eating in the car to prevent food odours from lingering.
3. Use air fresheners or odour absorbers specifically designed for cars.
4. Park your car in shaded areas to reduce the heat and humidity that can contribute to mould growth.
5. If possible, run the air conditioning system on the “recirculate” mode for a few minutes before turning off the engine. This helps dry out the system, reducing the chance of mould and mildew development.

Cleaning your car’s air conditioning system is a simple yet essential maintenance task that helps eliminate unpleasant smells and ensures a comfortable driving environment. Remember to clean your air conditioning system regularly and consult a professional mechanic if you encounter persistent issues or require expert assistance. In fact, our team will be happy to help! Just call 020 8460 3040.