Why Draining Your Hot Water Heater Might Be a Mistake
This thing happens in the DIY blog-o-sphere. A plumbing expert gets up on YouTube and gives a tutorial of how to clean out the sediment from your water heater. You've read a bunch of articles online, on websites that even look reputable(!), and they tell you to empty your water heater and flush outPosted — Updated
"What happens then is water displacement. The sandy partials that collect on the bottom of the tank displaces the water ever so slightly. This results in hot spots on the bottom of the tank. When this occurs the flames overheat the tank and begin to break down the steel. After many years this breakdown ends up becoming a tiny hole that is filled with this debris, oftentimes preventing the leak."
"However if you decide to drain your heater after many years of not doing it, or all of a sudden you start using the heater more then normal, this sediment that has been plugging that tiny hole is flushed out, often resulting in a leak in a few days after."
"So the moral is to flush yearly, but if you have not done so for many years to not touch it or you will end up with a leak."
Have you ever encountered this problem? Share your experiences in the comments.