A very common question pertaining to Suburban water heaters is which anode rod to choose and why are there two? Anode rods are designed to deteriorate inside your tank rather than your tank itself deteriorating. The two different types of rods are magnesium and aluminum and below we will go over the benefits of each.
Magnesium anode rods are great sacrificial rods as they generate higher voltage but this in turn assists in them deteriorating faster. Magnesium rods are what also cause the rotten egg smell inside of your coach but the magnesium also has health benefits from consumption.
Aluminum rods will deteriorate the slowest as they are not as conductive and will help prevent the rotten egg smell inside the coach.