air conditioning dryer unit

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KENENOON
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I was told I need a new condenser for my ac, but 1 mechanic says I have to replace the dryer unit also. but another mechanic says they never replace the dryer unit unless they replace the compressor ( for warranty reasons) he says its reccommended to replace the dryer unit every 3 years but nobody does, its a waste of money. I trying to figure out what to do and not waste money. any ideas?
May 10, 2006 at 3:41 PM
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LOSONE
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The dryer does exactly what the name implies, it removes moisture from the refrigerant. It also holds refrigerant oil. R0134A inhibits moisture. It is worse than R-12 freon

My rule is to replace the dryer anythime the system is opened to atmosphere. Moisture causes internal A/C issues especially the compressor and reduces cooling efficiency.

There is no rul that i know of after 40 + years as a garage owner to replace the dryer every 3 years except as a sales gimic.
May 10, 2006 at 4:51 PM