For this eval I showed up to the customers home and he stated his unit was not blowing out cold air. When I got to the out door I could hear the compressor trying to turn on but unsuccessfully. I opened up the electrical panel and saw the wiring had burnt and broken off from the capacitor. The capacitor was out of tolerance and the contacter was buzzing loudly indicating that was failing. Customer wanted to replace both so I did and upon doing so the fan and compresser fired up. When I gauged up refrigerant levels looked good for this system being 18 years old and R-22. I talked to the customer about replacement versus repairs and he said that he was going to get in contact with his Home Warranty company for an estimate from them first.