I had no previous experience with this company and found them through Groupon. I am slightly knowledgeable when it comes to wiring and had a challenging issue that I couldn't figure out. Michael and his assistant were also originally stumped, but kept working until they found the problem in the attic... Squirrels chewing wires. They were knowledgeable and persistent in finding my issue. They were patient with me and were great to deal with. Highly Reccomend!