Our AC stopped working yesterday afternoon, which was Sunday. I was frantic because I was having family over for dinner, and I relayed this to the very pleasant person who answered the phone at Conerstone. They had an AC repairman out in about 30 minutes! Our problem was a stopped up drain, and was taken care of in about 10 minutes. I can’t say enough good things about the AC repairman, John Rubio. He was so forthcoming in answering any questions that we had. We had already scheduled a maintainence appointment for this Thursday(I know, if I had only scheduled maintence a few days earlier), so I called today to request John to do our maintence, and on his advice we purchased a maintence plan. Conerstone installed our AC and heating system two years ago. I am so pleased with their service, and would highlyrecommend them.