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.
Every Water Heater Has One. The life of a water heater depends on the condition of the anode rod. It is used by manufacturers to extend tank life and is often a big determining factor in warranty length. Plumbers do not generally consider anode rod maintenance important and most water heater owners do not know it is even there.