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Home >   How To >   How to Repair AC Parts



Automotive AC Repair Articles and Videos


All the parts we sell come with the support of our United States based customer sevice team who are here to help. It is always recommended that all auto parts are installed by a licensed mechanic. The Videos and articles are here to give that little bit of extra knowledge. Select from the list below select the video or article to help with your desired project.


  How To Install AC Compressor System - Part 1
  How To Swap AC Compressor Switch
  How To Inspect Your AC Kit
  How To Uninstall AC Compressor
  How To Uninstall AC Drier and Expansion Device
  How To Drain and Add AC Compressor Refrigerant Oil
  How To Flush AC System
  How To Install AC Compressor
  How To Install Orifice Tube
  How To Install AC Accumulator
  How To Evacuate AC System
  How To Recharge AC System
  Buyers Guide: How To Buy an AC Compressor
  AC System Oil Capacity Reference Guide
  How to Install A/C Compressor
  AC Accumulator / Orifice Tube System Layout
  AC Basic Processes
  AC Speed Sensor Install
  AC System Compressor Common Issues for Replacement
  AC Compressor Diagnosis
  AC Compressor Install Guide by Sanden
  AC Electric Lead Connection Install
  AC System Contamination and Flush
  AC System Oil Level
  AC System Effects of Refrigerant Loss
  Converting R-12 System to R-134 - Page 3
  Drier / Expansion Device System Layout
  How to Determine Your Sanden AC Compressor Numbers
  Sanden Compressor Service Guide
  Saturn L Series AC Compressor Hose Installation Instructions
  How Much Does An AC Compressor Cost?
  Infographic: How Automotive AC Works
  AC Replacement 101
  Car AC Repair: Everything You Need to Know
  AC Compressor Identification and Specifications
  AC Compressor Pressure Readings Guide  
  Mercedes Benz Blower Motor Issue  
  R134 Information  
  Sanden AC Compressor Cylinder Head / Porting Guide  
  Sanden Compressor Service Tools  
  Sanden AC Compressor Inspection Procedures  
  Sanden AC Compressor Service Operations General Information  
  Sanden AC Compressor Service Operations Oil Change  
  Sanden AC Compressor Service Operations Clutch  
  Sanden AC Compressor Service Operations Shaft Seal  
  Sanden AC Compressor Service Operations Shaft  
  Sanden AC Compressor Serivce Operations Cylinder Head / Valve Plate  
  Sanden TRS 090-105 Compressor Service Manual  
  Toyota Prius AC Oil Contamination - Page 1  


AC Process    


Automotive AC systems are meant to cool the air that is moving through the cabin of a vehicle. This is achieved by blowing the air entering the cabin over a cooled surface (evaporator) which transfers the heat from the air to the coolant liquid that is flowing through the unit.


The process begins with the pumping of a mixture of specialized oil and Freon through the system. The compressor is the unit responsible for creating this movement. Now, the compressed fluid (which carries a lot of heat) is passed through the condenser which is a unit that expands the fluid so that there is as much surface area where air can pass by. The passing air will pull the excess heat out of the fluid and cool it, so it can perform its job. Next, the fluid passes through the expansion device where the lines that carry the fluid expand, this allows the fluid to cool even further. Finally, the fluid now travels through the evaporator where the heat from the air is absorbed again and the whole process starts over.


The ability of the system to cool is very dependent on the temperature of the air around the system and can give varying results in times of extreme heat. Needless to say that on a 100 degree day the cooling will not be as effective as on a cooler day.


Find AC parts with an Industry-Leading Warranty at Buy Auto Parts!


Buy Auto Parts is the best place online to get AC parts at unbeatable prices. We stock a wide range of OEM replacement and aftermarket parts for every make and model. To find the AC part for your car, simply tell us your car's year, make and model. Your order will be shipped from the warehouse closest to your location. We offer free shipping for purchases over $99 in the continental United States. Our products have been throughly-tested to meet or exceed industry standards. You can reach us on our support line at or leave us an email at [email protected], if you need help in choosing your part. Please feel free to leave us an online review. We value your feedback!


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