When we bought the house in 2005 it had a “relatively new” gas hot water tank. Relative compared to an 80 year old house and 40 year old furnace. The tank indicated that it had a 10 year warranty so we figured we were safe "for a few years”. 15 years later when we were out of town, a friend who was living with us at the time texted to say that the water coming … [Read more...] about Tankless Water Heater