I have been using C & J Air Conditioning and Heating Co. for quite a while. They recently installed a new HVAC at my home. It is working beautifully. I was treated great when I called to talk to them about replacing my old system. The installers are experts at what they do. They did an excellent job and cleaned up their work area when they finished. I highly recommend using them, in fact I've already recommended them to several people. They are the best in San Antonio. I signed a maintenance contract with them because I trust them to take care of my new air conditioner.