If (for ugly instance) the boiler was set to 130f and the hot water tank to 140f, the boiler could never get the water hot enough to trip the thermostat to the off position, and the tank would be ...

Q: I’m hoping that you can help with a smelly hot-water issue we have had for years. Whenever we return from a few days away, the hot water in our house smells like sulfur/rotten eggs. We usually have ...