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Why Doesn’t My Car’s A/C Work?

Why Doesn’t My Car’s A/C Work?

Four Reasons Your Car’s A/C Doesn’t Work

Nothing beats a summer road trip. The music’s blasting, the snacks are flowing, and the kids are actually getting along in the back seat. But then, everything changes. The air conditioner dies.

Dun, dun, dun.

Needless to say, driving without air conditioning can be uncomfortable, frustrating, and even dangerous. There are many reasons your car’s A/C system could stop working, such as:

1. Leaking Coolant or Freon

From something as simple as a damaged or loose O-Ring, to the more complex issue of a cracked compressor, leaks are the most common reason your A/C isn’t working properly. Before your coolant can be recharged, you need to make sure the the A/C system is free and clear of leaks. 

2. Mold and Mildew Buildup

Ever experience an unpleasant odor when you turn on the A/C? Mold and mildew can buildup in the A/C system’s evaporator, creating a stinky scenario. Your mechanic can eliminate these issues by cleaning out the system and changing the air filter. Mold and mildew might not prevent your A/C from working, but they can certainly make for an unpleasant (and unsafe) drive. 

3. Fan Down

A malfunctioning or burned out blower fan can cause airflow issues – whether you’re using the A/C in summer or heat in the winter. Your HVAC hoses could also be damaged, which could also cause an airflow issue. 

4. Compressor Issues

If your A/C is blowing warm air, making strange noises or just not working at all – chances are you have a compressor problem. Your compressor is made up of several different parts, which can be fixed individually. Or, if the issue is the compressor itself, the whole unit might need to be replaced. 

Most air conditioning repairs are relatively minor and can be fixed by a trained technician. In order to diagnose and fix a broken or malfunctioning car A/C system, a Sears Auto Center technician would typically check the following things:

  • Visually inspect and test A/C compressor
  • Visually inspect and test accessible components for leaks or damage
  • Evacuate the system’s refrigerant
  • Vacuum test the system
  • Recharge the air conditioning system with the proper amount of refrigerant

The best time to service your car’s A/C system is before it stops working. If your car’s A/C isn’t working, you can learn more about air conditioning service or schedule an appointment at your local Sears Auto Center to make sure your whole family keeps its cool on your next summer trip.

For more tips on common things to check before you hit the road, check out this article on how to make sure your vehicle is road trip ready

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