I had a leak in my radiant heating slab. It occurred just before the weekend, so it had me very worried. I couldn't get a hold of any plumbers, then I remembered American Leak Detection. I sent them an email on a Sunday and within an hour, I received a reply. I set up an appointment for the very next morning. Dan came out and detected the leak very quickly. Then either the following day or a couple of days later, Dave came out to uncover it and repair it. I thought they both did an outstanding job for me. I highly recommend them to anybody and would definitely use them again!