Skip the auto shop - Our mechanics make house calls

How Long Does an AC Compressor Belt Last?

AC compressor belt

For the air conditioning system in your car to work properly, it has to pressurize refrigerant. That is the function of the AC compressor. The compressor itself gets a signal from the AC relay, and is operated by a belt that is powered by your engine’s crankshaft – the AC compressor belt. In some cars, the AC compressor belt is separate, but in most modern cars, the serpentine belt runs the AC compressor along with all the other accessories in your car.

Belts of any kind have a limited life. Usually, you can expect your AC belt to last between 30,000 and 40,000 miles. If the belt is exposed to contaminants, its life will be reduced. If you are an infrequent driver, the life may be more effectively measured in terms of years – usually a belt will last between three and four years, even if it does not become contaminated. Beyond that point, the likelihood of failure will increase. So, your AC compressor belt will inevitably wear, and if you own your vehicle for long enough, it will inevitably have to be replaced.

Signs that your AC compressor belt needs to be replaced include:

  • Wearing, fraying, cracking or looseness in the belt
  • Belt is broken
  • Belt is missing
  • No air conditioning

If the AC compressor is operated by means of a serpentine belt, your car will not run. If the compressor belt is separate, you can live without it as long as you don’t mind having no air conditioning. An expert mechanic can replace your AC compressor belt for you so that you can drive in comfort.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P0291OBD-II Trouble Code: Cylinder 11 Injector Circuit Low
P0291 code definition When your vehicle’s PCM registers the P0291 code, it means that a voltage reading came from the fuel injector circuit – for cylinder number 11’s fuel injector –...


Related questions

Q: How do I turn on the automatic climate control air conditioning?

The air conditioning system provides cold air to your cabin, to help keep you comfortable on hot days. To turn on the air conditioning in the automatic climate control system, press the A/C button on the right side of the...

Q: Water leak on passenger's side

Hello. It sounds like you may have a clogged AC drain hose. Overtime, the drain hose can become clogged with debris and restrict the water drain passages. There should be a little hose coming out of the firewall into the...

Q: help to fix ac

This is most likely an AC compressor issue as they will often times make a rattling sound when they are going out. This is typically not an easy fix depending on your mechanical abilities and access to the proper tools....