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Gas water heater - Are anode rods universal?

1.6K views 1 reply 2 participants last post by  rjniles  
#1 · (Edited)
Hi all,

Have an old 40 gallon GE gas water heater bought 20 years back. It still works good after replacing the thermocouple a few years back.

The anode rod is already worn out though. So looking into getting a replacement anode rod.

The GE gas water heater is 56 1/2" tall (including the leg). Would a 3/4" 44" long anode rod like this below work? Or it needs a different anode rod?



Or this one:


The hard water level is around 220ppm. Not sure if aluminum is better or magnesium rod is fine.


Thanks.