I just had my Weil-McLain Series CGt domestic hot water heater coil replaced. The old coil was badly corroded, leaked and in fact, I had to shut down the unit and drain the water just prior to the repair. Ralph did an excellent job. It's like I have a new boiler, and I have all the hot water I need. He used his skill and 18 years' experience to tackle the problem. And the cost was very reasonable too! I need a plumber - not a plumbing company. Ralph is my man!