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Do I Really Need to Change my Receiver-Drier/Accumulator?

desiccant is used to trap the moisture inside your A/C system.

The receiver-drier and accumulator contains a bag of dessicant which is used to trap system damaging moisture. Moisture inside your a/c system can cause ice formation and corrosion. Acid that forms when refrigerant mixes with moisture can weaken aluminum components such as the condenser and evaporator.

Because desiccant materials break down with age and the bag that contains it can rupture, you should replace the Receiver Drier or Accumulator if it's over five years old - or - any time the system is opened for major repair.

It's also important to note that many compressor suppliers will not warranty a replacement compressor unless you replace the accumulator or receiver-drier

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