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10 minutes, 10 months, 10 years. Nobody knows. But the better it was installed and the the better you take care of it the longer it will last. I see systems that are 30 years old and operating like new and I see them 8 years old that need to be replaced.

With that caveat in mind, systems in the southern US, running most of the year, can be expected to last 8-10 years. In the middle to upper portion of the US, running 4-5 moths a year, 10-15 years. And in the upper states and lower provinces of Canada, running just a couple months a year, 15-20 years or more.

http://energyguild.hubpages.com/hub/How-Long-Will-My-Central-Air-Conditioner-Last

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13y ago

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