Eeek! My wife would never make that kind of decision without my input. It sounds like they talked a smooth game over to her. My unit is about 15 years old and I know it is probably at the end of its expectation. With that said, American Standard/Trane is rated as one of the top units according to Consumer Reports.

"The true soldier fights not because he hates what is in front of him, but because he loves what is behind him."
-G. K. Chesterton