Water heater anodes - this one was long overdue!

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Clicker

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I've always heard if you want a tank style water heater to last for decades just change the anode. I finally got around to changing one in a WH at work, it's a 100 gallon Bradford White NG unit about 10 years old.
Probably should've done this 5 years ago but I was really concerned it would be seized and I'd damage the heater but it didn't really put up a fight.
I also pulled off the clean out plate and vacuumed out 3" or more of sediment.

Anode.JPG
 
Clicker said:
I also pulled off the clean out plate and vacuumed out 3" or more of sediment.
Click to expand...
There are two approaches to eliminating the sediment. One is to flush it out every year. The other is to install a hot water loop that goes around to every hot water point of use, and returns to the heater. The pump that sends water through that loop is small, quiet and lasts forever. The hot water points of use get instant hot water, and the secondary benefit is that no sediment builds up in the heater.
 
The building has a recirc pump / loop set up and I've flushed the system several times over the years. To be honest I didn't really flush the tank properly I was basically just draining & refilling under reduced pressure.
Moving forward the plan is to flush more aggressively while under near full pressure.
 
Does a gas water heater have this?
 
Will this anode be a solution in tight head room?
1667047396652.png
 
Air or battery powered impact gun makes easy work to remove the anode without torquing the heater and the water pipes.
 
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