Right now I'm in the process of having my water heater replaced. It didn't give out but it's 14 years old and was original to the house, and we have a lot of boxes on the floor which I would prefer not get wet. I have never really done any maintenance on my water heater LIKE DRAINING IT as I am under the impression that draining them cause the bottom to rust out quicker. What say you, drain or not drain, which gives the longer life time.