FW28z,
I went to an RV store today to purchase the replacement plastic plugs. I was told that Atwood water heaters already have an anode, which should be replaced yearly, and was shown one. They also sell brass plugs (with a drain valve in the center) and stated their use is fine as the heater has an anode. I didn't get a chance to look at my heater today but was told I would see the hex head once I remove the cover. The anode appears to be about 6-8 inches long according to what they showed me. What do you think?
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