What do the numbers on a tire mean? The DOT number appears on the sidewall of all tires intended for sales in the U.S., and designates the location of manufacture, the week and year of production, and the specific tire.
Water heater anode rod or sacrificial anode is the important component part with only one purpose; to protect metal tank from corrosion. Use this article to learn how to replace the anode, installation tips, how it works, about different types and when to use each one.
How long does an average anode last in a water heater? I recently replaced a 20-year old water heater in my home because I felt it was probably best to do it before it actually failed. After getting the thing outside and new one installed, I noticed aside from a heat-element change, nothing else had ever been done to it.