I have been having problems with my plumbing since I moved in a year ago. Another company said I would have to jackhammer since I was on a slab. I called for a second opinion from American Mechanical. Rich believes he has fixed the problem. Only time will tell, but he was very professional and I feel like the tool he used may very well have fixed the problem. I also had a leaking kitchen sink and he showed me the problem, gave me and estimate and was able to fix the problem right away. I am so happy I will be able to use my sink again. Thanks to Rich and his helper today. Both were on time, very professional and even cleaned up before the left.