Tips for replacing hot water heater anode?

   / Tips for replacing hot water heater anode? #1  

mikester

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Aug 25, 2012
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M59 TLB
I think its time to replace my anode. Past experience is it's a son-of-a-gun to break the anode loose using only a breaker bar. Does anyone have any tips to share and advice on using an impact gun?
 
   / Tips for replacing hot water heater anode? #2  
Just changed one in my water heater. Just dropped the impact on it and pulled the trigger. Came right out no problem. 1/2" impact.
 
   / Tips for replacing hot water heater anode? #3  
Turn off water. Turn off electric. Drain the tank. The rest is just mechanical. While you're at it, replace the anode too. It's probably wasted.

Edit: Ops. I was thinking you were changing a heater. 🫣
 
   / Tips for replacing hot water heater anode? #4  
The standard rust breaking sequence for mechanical fasteners on vehicles seems to start with light taps alternating L and R to break the corrosion without breaking the fastener. Water heater tanks don't have thick walls so proceed carefully.
 
   / Tips for replacing hot water heater anode? #5  
I'll mention I bought a Milwaukee 2967-20 1/2" impact specifically to change out the factory installed anode on our heater. Our anode broke free with no issues.The Milwaukee impact has an unusual feature that once the bolt ( or anode ) is loose it immediately slows to a moderate speed ( much less vibration).
I do not regret the expense at all because the impact is superior to my several electric & air impacts. Perfect for rotating tires.

More info = We service our electric heater every six months ( replacing the elements and vacuuming out the sediment ) & our prior anode lasted three years.
 
   / Tips for replacing hot water heater anode? #6  
I think its time to replace my anode. Past experience is it's a son-of-a-gun to break the anode loose using only a breaker bar. Does anyone have any tips to share and advice on using an impact gun?
Fire up your favorite impact gun and go for it. It is a much better method than a breaker bar. Most water heater manuals tell owners to check every six months, and I'm sure that very few of us ever do. I have often wondered whether it was to keep the threads clean by being chased several times a year.

I switched to electronic anodes fifteen or so year ago, and I highly recommend them. Once and done.
Corro-Tec electronic anode Amazon

All the best,

Peter
 

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