My Lennox Air Conditioner is only 4 years old. Last year the coil went out. I wish I'd known of this website before I bought the Lennox. This year I had more AC problems. The outside unit wouldn't come on. The condenser motor supposedly went out. It was replaced yesterday afternoon. This AC worked during the night and this morning, but this afternoon the AC stopped again. The AC company that sold me the unit is blaming all the problem on Lennox. They say none of the AC companies provide quality equipment. I had a Trane unit for 14 years, and fewer problems than this. I'm sure Lennox won't do anything to back up their product. User's recommendation: Do your homework. And cross your fingers.