It's a good idea to check your car's air conditioning (A/C) system at least once a year, especially before the warmer months hit. Regular checks can ensure the system is working efficiently and help you avoid any surprises during a heatwave. Here’s what you should look for when checking your A/C:

1. Performance Check:
Cooling Efficiency: Turn on your A/C and check if it's blowing cold air. If the air isn’t cold or takes a long time to cool, it could indicate an issue, like a refrigerant leak or a failing compressor.
Airflow: Ensure that the air is flowing freely through the vents. Weak airflow could suggest clogged filters or problems with the blower fan.

2. Refrigerant Level:
The refrigerant (coolant) in your system can slowly deplete over time, affecting the system’s ability to cool properly. If the refrigerant is low, it may need to be recharged. Many mechanics can check and refill refrigerants during a service.

3. Air Filter:
The cabin air filter plays a big role in ensuring the air quality inside the car, so check and replace it every 12,000 to 15,000 miles (or as recommended in your car’s manual). A clogged filter can make your A/C less efficient.

4. Condensation Drain:
Your car's A/C system produces condensation that needs to be drained. Make sure the drain hose is clear to prevent moisture buildup inside the cabin, which could lead to mould or mildew growth.

5. Check for Unusual Sounds:
If you hear strange noises like hissing, squealing, or grinding when the A/C is running, it could indicate a problem with the compressor or other components.

6. Odour Check:
If there’s a musty or mouldy smell when you use the A/C, this could be due to mould or bacteria buildup inside the system. In that case, a professional cleaning or deodorizing service might be needed.

7. Professional Inspection:
If you're unsure about any issues or haven't had your A/C system checked in a while, it's best to have a professional mechanic inspect the system every 1 to 2 years, especially if you notice any changes in performance.

By staying on top of these checks, you can avoid breakdowns and ensure your A/C runs smoothly when you need it the most.