Your water heater is one of the most neglected appliances in your home. It sits hidden away in the basement, attic, or closet somewhere where no one pays a single second of attention to it as long as there is hot water when you turn on the faucet. That is until one day when it springs a leak and it turns into a major event.
Most water heaters are made of steel with glass or porcelain-lined tanks. When you combine water with metal, it will form rust. To protect your water heater from corrosion, a long metal rod called a sacrificial anode rod is used. The idea is the anode rod corrodes first, sacrificing itself to protect the steel tank. By replacing your anode rod, you can significantly extend the life of your water heater and also save a bunch of money.