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Originally Posted by tuccillo
Really? Anything to support your opinion?
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He is correct. The shorter lifespan is because of the widespread use of aluminum coils now instead of the old copper ones. The braised aluminum joints aren't as strong as copper and they tend to blow up with the higher pressure of the new R410A units VS the old R22 units.
That's not to say every aluminum A-coil is going to get a blow out, but a lot more of them do then the older copper coils.