Keep in mind that when dealing with air conditioning, having the system properly charged by a professional is a good practice to ensure the system is properly charged and functioning. To DIY this project, the cost of parts, flush, and refrigerant will generally run between $350.00 – 650.00. Depending on the model and cost of the parts in general, this cost could be even higher. Generally speaking, to have a shop properly change an AC compressor and related components, flush, and re-fill the AC system will run between $750 – 1500.00. Many times, the entire compressor is more cost-effective to replace. If your AC clutch has failed, these can many times be replaced on their own without swapping the compressor but require special tools and procedures to swap out properly. You’ll need some specialized tools like a vacuum pump and a set of manifold gauges to do the job right. It’s worth noting that this job is somewhat complicated, and probably not a good choice for new DIYers. Just be sure that you research the other components listed above, and their replacement as well. If you are mechanically-inclined, you can potentially avoid all labor costs by replacing the compressor yourself. All necessary seals to hook up the AC lines.In general, keep in mind the following parts, which should be changed when doing a compressor: Failure to do this is a guaranteed-ticket for another failed compressor, as these same contaminants will damage the new one. It’s also important to note, that if your compressor suffered internal failure, the entire AC system’s lines and components will need to be properly flushed out of contaminants. This can vary quite a bit based on the vehicle you drive, and where the compressor is situated on the engine. Besides the compressor, there are other parts that should always be replaced at the same time the compressor is being serviced. That’s why it’s important to correctly diagnose what’s wrong with your AC system before you start replacing parts.Īn AC compressor change can be complex based on the parts needed to do the repair properly. If your compressor isn’t working, you’ll know it because it’s one of many reasons your AC could be non-functioning, meaning a broken compressor will result in your vents blowing hot air. It’s important to understand that your vehicle’s AC not working could be caused by a number of issues – anywhere from just being low on refrigerant, a bad cycling switch or relay, or a faulty compressor. If it breaks while disengaged, it won’t run at all. Other times, the bearings located within the clutch can also fail, causing noise. Compressors can also have bad seals, causing leaks, or the mechanical internals can simply fail due to wear, age, or lack of proper oil. If this part breaks while engaged, the compressor will always be running. The compressor contains several parts which can fail. One of the most common of these parts which can have problems is the compressor clutch, which engages or disengages to turn on or off the compressor as needed. The air conditioning compressor is powered by mechanical energy from the drive belt on your engine, and compresses R134a (or other refrigerants). It is essentially a pump, drawing in refrigerant, compressing it, and pumping it out. This pressurized refrigerant then makes its way through the AC system, where different components take the refrigerant from a gas to a liquid, which cools it rapidly, where it’s cold state does its job to keep the vehicle’s cabin interior cool.
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