Water Heater – What is the anode rod and when/how do I replace it?
For Suburban brand water heaters: What is it? Only Suburban water heaters feature an anode rod. The anode equalizes aggressive water action, providing cathodic protection for the tank. All Suburban water heaters are protected by a magnesium or aluminum anode to prolong the life of the tank. When should I remove it? It is a very important factor in tank life and should only be removed for inspection, draining or replacement. How do I remove it? It is removable using a 1-1/16″ socket. When should I replace it? Under normal use, the anode rod will deteriorate. Because of this, we recommend it be replaced annually or when consumption or weight loss of the rod is greater than 75%. Water with high levels of iron and/or sulfate will increase the rate of deterioration. To extend anode life, drain water from tank whenever the RV is not being used. Avoid any extended time of non-use with water in the tank. When replacing it, clean the inside threads on anode rod hole in the water heater. Wrap th
