Any need to replace this 6 year old anode rod?

[Larry S]

After learning about how anode rods work and replacing them, I was going to replace the anode in my 6 year old water heater. (Rheem Pro+75-76N). But when I started to pull it out it looks very intact so I was going to hold off. Anything I'm missing which would suggest replacement now? Of course only first couple feet show due to limited overhead clearance.

 

[Reach4]

I am impressed that you got that loose. Impact wrench? Anyway, I don't know if you should replace or not. I tend to agree that you are probably OK to put it back. Do use PTFE tape when you screw in an a WH anode. Do not use as much torque as it took to loosen. I would estimate 15 ft-lbs would be good.

 

[Sponsor]

 

[Jeff H Young]

if it looks like that all the way down I wouldnt put new one in

 

[LLigetfa]

Do use PTFE tape when you screw in an a WH anode.

Don't use too much tape as it needs to ground electrically to the tank through the threads. If there is enough headroom to pull it all the way out, I would clean off some of the patina to get it back to bare metal.

 

[Reach4]

Don't use too much tape as it needs to ground electrically to the tank through the threads. If there is enough headroom to pull it all the way out, I would clean off some of the patina to get it back to bare metal.

I worried about the PTFE tape insulating. I monitored the resistance between the tank and the anode metal as I turned. I don't think I got a quarter turn before there was continuity. The threads cut right thru the tape.

 

[John Gayewski]

That coating of rust(?) is a barrier it could be impeeding the reaction from taking place.

 

[Chefwong]

So herein lies the question. See, minimal corrosion on the anode.

How do you make the same judgement call on what's working or not with a Powered Anode.
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