Carrier 2.5 Ton Central Ac Unit

I purchase my home in 2003, it was built in 1998, and the Carrier central ac unit just failed (2010) I notice it had some repairs done before i purchase the house.

It seems strange that the central ac unit needed repair so quickly, the air conditioner unit did last 12 years but i was expecting a longer life, bottom line is that i will not trust that brand.