Normally, you can expect water heaters to last between 8 and 12 years before they need to be replaced. Even with proper maintenance, it’s inevitable for the internal parts of the heater to become corroded or coated in a buildup of minerals. When this happens, the efficiency of the water heater declines until it decides to give up altogether, leaving you with no hot water.
Fortunately, there are some signs to watch out for indicating that a replacement for your failing heater is warranted. Spotting any of these signs can save you a lot of time and money, while rescuing you from the nasty surprise of suddenly losing hot water in your home. Read more from this article http://bit.ly/2n5fwNR