Originally Posted by Geeber
When I drained my water heater for winterizing I found there is no anode, just a plastic plug in it's location. I questioned the dealer and they said because the tank is glass lined so no anode rod is required? I have never heard this before because I know residential water heaters are glass lined and fail quickly once the anode rod is depleted. Do you folks have a just a plastic plug or is there an anode rod?
Dealers are DUMB as a general rule.
Specific ones may be the exception; I just haven't met one yet.
Aluminum Tanks do not need Anodes (Typically Atwood).
Iron ones (glass lined or not) (Typically Suburban); DO.
The interior glass does reach the fitting intrusion points or the torque of tightening the fitting would crack the glass. The glass is there for longevity of the boiler due to the thinness of the tank walls for weight reduction. They still will rust out quickly (at the fittings) without an anode.
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