Car Culture

Common Reasons for A/C Failure

July 16, 2017
Especially in the summer heat, we rely on our vehicle’s air conditioning to provide a refreshing breeze on our drives. Stepping into your car that has been parked in the sun only to find that your A/C has quit out on you is something I wouldn’t wish upon anyone! Here are some common reasons that can lead to A/C failure, and actions you can take to prevent this nightmare from happening: Faulty Fuse or Circuit Breaker In the event that your air conditioning fails, one of the first things you should check is your circuit breaker and fuse. Many fuses use a strip of wire that can melt or break if the amount of current passing through it exceeds its capacity. Your car’s fuses are installed in line of specific circuits, in order to protect the circuits from overloading. If you notice that your vehicle’s accessories, such as the wipers, radio, power locks, etc, suddenly start weakening or cease to function, this can indicate a faulty, broken, or dying fuse. Look for these signs, so you can catch the problem early before it affects your air conditioning system! Refrigerant Leak If your vehicle’s refrigerant (a chemical your car uses for cooling) is not at the proper level, this can harm your A/C’s ability to function properly and lead to A/C failure. A/C systems are sealed and don’t require a top-off of refrigerant, therefore if the level is low, you have a leak that needs to be addressed immediately by a certified service technician. These leaks are trickier to notice. Symptoms can include an oily residue on or around the A/C hose units, connections, or potentially on any components of your air conditioning system. Worn Out Compressor The compressor is essentially the heart of your vehicle’s air conditioning system. It circulates the refrigerant and removes heat from your vehicle’s cabin. The compressor can simply just wear out over time, which can lead to issues with your A/C. However, there are some preventative measures you can take to prolong its life. Whenever you are getting maintenance done on your car, have the technician do a simple compressor inspection. Take matters into your own hands and run your compressor for about ten minutes once a month, regardless of the temperature outside. If you start to feel warm air blowing through your vehicle’s A/C system, that is a good indication that something is damaging your air conditioning. Whether it’s one of these common issues listed above, or another A/C damaging culprit, keep an eye out for the symptoms so you can avoid complete A/C failure!

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