I called Mark about a sump pump that did not work. Mark scheduled a visit for the next morning and arrived right on time. After a few minutes of checking the electric system in my house Mark showed me that the sump pump works perfectly, and that the problem was in the panel. He explained to me how to check the panel for this kind of problem, and then, to my surprise, said that he will not charge me for his visit. So Mark's visit was not only very beneficial (the sump pump is working now, and I even know what to do next time, in case something goes wrong), but also free. Mark was highly professional, very nice and helpful, and trustful. 10 stars!!!