We had a problem with our central A/C right before a sweltering long weekend and called CoreTemp based on the Homestars reviews. I called in the morning and Richard was able to fit us in later on the same day. Richard and his associate (didn't get his name!) arrived, and within an hour they were able to diagnose and correct the problem. They were friendly, courteous and professional throughout, and the price was very reasonable. Janice from the office (who called to arrange the time for Richard to come) was also great to deal with. I wouldn't hesitate to recommend them.