Our heater speed producing hot water just before the weekend after almost 10 years of continual service. I placed a service call with my home warranty service (AHS) but their tech couldn't come until Tuesday (Memorial Day weekend). WHO had installed it, so I called them. The same tech who had done the original install, Kevin, came out on a SUNDAY, after calling to confirm the problem and get the model of the heater and controller so he could bring the right parts. He carefully diagnosed it as a faulty thermopile. He replaced that, but the controller wouldn't turn on. He explained that the controllers for my brand often fail after this sort of thing. He replaced the controller and the heater fired right up. He had to charge for the parts, but only charged $50 for the labor as it was a unit they had installed.I really appreciate Kevin's awesome attitude, and his careful methodology to diagnose and solve the problem at the lowest possible cost, when a lot of companies would have just said "your 10 year old water heater is dead, gotta replace it".I highly recommend Water Heaters Only as the place to get a quality water heater installed carefully and with great support!