{"id":2420,"date":"2023-05-22T11:35:09","date_gmt":"2023-05-22T17:35:09","guid":{"rendered":"https:\/\/www.www.accurateautoadvice.com\/?p=2420"},"modified":"2023-05-22T11:35:09","modified_gmt":"2023-05-22T17:35:09","slug":"ask-aaa-replace-entire-ac-system-replace-compressor","status":"publish","type":"post","link":"https:\/\/www.accurateautoadvice.com\/maintenance-repair\/ask-aaa-replace-entire-ac-system-replace-compressor\/","title":{"rendered":"Ask AAA: Should I Replace My Entire A\/C System When I Replace My Compressor?"},"content":{"rendered":"

A reader asks:<\/p>\n

I have a 2013 Kia Sorento. The compressor makes a sort of grinding, growling like sound when turned on. When the proper amount of freon is in the system. It cools fine. However, about every 2 years, it requires Freon to be added. Currently, I will be replacing the compressor, condenser\/accumulator, expansion valve and all O rings. Is there any additional components that need to be replaced? Like any of the AC lines to ensure there are no metal filings in the system?<\/p><\/blockquote>\n

There are a few different ways you can go.<\/p>\n

Why A\/C Compressors Fail, and What Can Happen When They Do<\/h2>\n

A\/C compressors typically fail because of a worn bearing. Bearings will wear naturally over time, but they will wear out faster if they’re poorly lubricated, if they’re under an unusual amount of strain (say, because there’s a coolant leak), or if there are contaminants in the system. Usually, when a compressor fails, it will make some noise to tell you failure is imminent.<\/p>\n

\"A\/C<\/a>
A\/C Compressor Cross Section, courtesy Mahle<\/a><\/figcaption><\/figure>\n

However, sometimes A\/C compressors fail in dramatic fashion. The compressor turbine will explode, sending metal shrapnel into the coolant flow. These metal bits will then deposit themselves in the condenser, expansion valve, and anywhere else there’s a good place for metal pieces to sit. If a compressor fails in this manner, most of the A\/C system needs to be replaced, as there’s no reliable way to make sure all the metal pieces are removed otherwise.<\/p>\n

When an A\/C compressor fails, many shops will recommend replacing the entire system for the reason above.\u00a0However, it’s not always necessary to replace the entire system.<\/p>\n

What To Do When It’s Time To Replace An A\/C Compressor<\/h2>\n

Historically, A\/C compressors have been very costly to replace ($1000+). If this is the case for your vehicle, you want to replace the entire A\/C system when you replace your compressor. However, for most vehicles, there’s a likely very inexpensive ($200) compressor available aftermarket.<\/p>\n

These cheap aftermarket compressors aren’t great, but they should work OK for a few years. And because they’re so cheap, it can sometimes make sense to just replace the compressor only. The thinking is:<\/p>\n