I have had to call Serv-A-Tech a few times over the years for service on both of my air units. Larry Fowler, the owner, or one of his workers usually come out that same day. You won't meet more honest men. I never felt over charged, and they will do whatever they can to fix the problem. Larry will also try to find the best and most inexpensive solution for you. I highly recommend Serv-A-Tech.