: Sunday the 28th the water from the faucet was extremely hot, : and I could have enjoyed some Colombian coffee. The next : day, Monday, there was no longer any hot water. It is only : a year old. What could it be?Joe,Sounds like the upper thermostat. There should be a reset button that can be pushed to reset. However, the thermostat may be bad, causing the high temperature in the first place. Replacement is fairly easy.http://www.terrylove.com/wh.htm Water heater informationRegards, Terry Love