On my prior coach with a Suburban water heater, replacement of the anode rod was an annual item (at minimum) because it also served as the drain plug for the water heater. I had to remove the anode to drain the water heater for winterizing.
Also, if you are at a campground that uses well water that has a high mineral content the anode may need to be replaced more frequently.
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Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054
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