Called them out because my AC quit working overnight. They came out promptly and he got the back access panel off and was getting equipment ready to test the AC started working. I asked him what he did to get it started and he said" Nothing, it just started". He tested the Freon and nothing more and left. The next night it happened again and I called them to come out, but before they arrived it started working again so I called and cancelled. It continued to cut out when ever temperatures dropped. The next week I got the bill in the mail. $150.00 for a service call and a no fix. So I called and asked if they could send out someone more knowledgeable and experienced and because they didn't fix it on the first visit if they could waive the service fee. Boy did I get an ear full. In the end I educated myself online and learned how to diagnose and test it and found out what part was bad. Ordered it online and installed it myself. Job done. All I got from Shannon was a $150.00 charge for a no fix. I'm through with Shannon. read more