One of our A/C units stopped working late one evening this week and we suffered through the night (slept in the other side of the house actually) and called Semper Fi early the next morning. They were able to come out that afternoon and diagnose and fix the problem for what I thought was a very reasonable price. We also talked about replacing both 17 year old units, which we'll need to do soon I'm thinking. They provided alll the information with no high pressure sales pitch, which I appreciated very much. I'll definitely keep them in mind when we have to do that (ugg!). Very satisfied and they are highly recommended. Semper fi!