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.
Turn on the water, the power or gas, and burp the air from the system. Check the condition of your anode rod every three years. If the hex head is set below the top of the heater, you'll need a 1-1/16-in. socket to reach it. If it protrudes above the top, you can use any type of wrench.