4 Distinctive Types of Anode Rods

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You might be already familiar with the different parts of your water heater as well as its internal mechanisms and functions. In that case, you would be informed about what a sacrificial anode rod is. It is a component of your water heater mechanism that fights against corrosion. Corrosion can cause too much destruction to your water heaters and they would need to be ceased from doing so. The sacrificial anode rod sacrifices itself to prevent corrosion within the water tank’s interior. Here are the four basic variations of anode rod and their specific attributes and functions.


1. Magnesium Anode Rod


Magnesium anode rods are commonly used for the new and current models of water heaters. They no longer use aluminium or zinc anode rods instead, they use magnesium anode rod. This is because magnesium has this sturdy attribute that can well resist the destruction caused by corrosion. But when you do utilise hard water at home, the use of this anode rod variation is never suitable. This is because the mineral content of hard water will encourage corrosive activities in magnesium and would endanger not only your anode rod but the whole water heater mechanism.
What is best for hard water is magnesium anode rod. This would be more efficient in getting rid of corrosion for you not to constantly change your unit.


2. Impressed Current Rod


Unlike other types of anode rod, impressed current anode rods do not have to be replaced often but would require some maintenance procedures to clean it from dirt and rust. This would attract corrosion to the rod with the use of electricity. Though they are designed to be a sacrificial component to cease the influence of corrosion, it doesn’t mean that they have to be always replaced. They can still be efficient in doing its job in you only maintain them.


3. Zinc Anode Rod


Most of the zinc type of rods are commonly integrated with aluminium and are not made of pure zinc. Typically, there is more aluminium content in the rod than that of the zinc. The zinc presence is only for aiding in the reduction or removal of the sulphur present within your water heater tank. Sulphur is actually the product of the reaction between aluminium and the anaerobic bacteria in the tank. This is the cause why your hot water smells like stench egg and is very disgusting when used for bathing and has reached every corner of your home.
Zinc are integrated with aluminium to avoid this situation. The zinc component will kill the bacteria to avoid it from reacting with aluminium thus, the stinky smell would be avoided. To continue their efficiency, you should do your job as a homeowner which is to maintain the unit. This is now used for some of the water heater models.


4. Aluminium Anode Rod


Aluminium rods are the conventional type of anode rod utilised by most homes for many years. Nowadays, it is no longer due to the nuisance it offers. But areas utilising hard water prefer the use of aluminium rods. This is because they last longer when exposed to high mineral content compared to the other variations of anode rods.

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