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What Usually Causes A Car A/C to Stop Working?

You rely on your vehicle's air conditioning system to keep you comfortable on the road. When an issue with the A/C occurs unexpectedly, you'll find yourself driving in the heat with no relief. The entire HVAC, or heating, ventilation, and air conditioning, system is a complex system that is interconnected in some ways. The air conditioning system is run by a compressor which is driven by the engine, along with pressure lines and refrigerant. 

The following symptoms are indications that there is an issue with your vehicle's air conditioning system: 

  • No air coming out of vents
  • Air is warm when A/C is turned on
  • Strange noises coming from vents when A/C is on
  • Mold or Mildew smell 

If you're experiencing any of the issues listed above, chances are you have a problem within the A/C system. Let's look at some of the most common causes of a failing vehicle A/C. 

Common A/C problem causes include the following: 

  • Low refrigerant
  • Damaged compressor
  • Bad compressor clutch
  • Damaged expansion valve
  • Damaged evaporator
  • Worn serpentine belt

While the air conditioning has different working components than the heating system, an issue with either system like a bad blower motor can prevent any air from blowing out of the vents - warm or cold. 

Most of the time, an A/C issue can be easily identified with a few tests from a member of our team. If you happen to be having issues with your air conditioning system, don't hesitate to bring your vehicle into the experts here at Dave's Automotive in Stockertown, PA today!

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