Tech came out for yearly check, advised my unit needed required parts. Tech advised cost on parts, after discussing options on unit, tech and I made decision it would not be cost effective to put money into the old unit. A new unit did away with the old type of Freon and the warranty on the new unit was the major factors. No pressure from the technician, not trying to be a sells men. The installers came out on time and were dependable and professionals.