Rust can occur quite easily whenever any object made of iron comes into contact with water for prolonged periods. And wherever rust is present, corrosion is soon to follow. Your water heater is made of steel, an iron alloy, and as you know, it holds water continuously. So how come the tank has not yet rusted?
Two layers of prevention for your tank
If your tank shows no signs of rust, then your water heater is in good condition. While rust is still a possibility, there should be two things protecting your water heater from rust and corrosion. First, there is a lining to your tank, usually made of glass, which keeps the steel from ever making contact with the water. However, this is a very thin layer and it can form cracks over time. That’s why tanks also have an anode rod.
The anode rod is a small metal rod that rests atop and inside of your water heater tank, somewhere near the center. This is usually made of aluminum or zinc. These materials are used because they are more corrosive than iron. In other words, the rod should corrode before the tank has a chance to rust, essentially sacrificing itself for the well-being of the water heater.
Maintaining the anode rod
As the anode rod attracts corrosion to itself, it begins to slowly wear away. That is why it’s important to have a professional check up on your system from time to time and make sure that everything is in good shape and replace the anode rod if necessary. An anode rod that has worn down to almost nothing will be no good for your system, so another anode rod must take its place and continue making the sacrifices necessary to keep the system running.
Curious about the state of your water heater’s anode rod? Contact the experts at Advantage Airtech to investigate your system and make any necessary adjustments to your water heater in Toronto, including replacing the anode rod. Call today!