Anode rod, what fits what?

The Tank Anode rod, what fits what?

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  • #22681
    Guest

    I have a Ctaftmaster 40 gal tank that is about 5 years old and would like to check/change the anode. How do I find out what tank takes what rod? Installed many a tank, but have never ventured into the anode hole before. Thanks

    #22682
    Randy Schuyler
    Keymaster

    It has a hex anode in its own port. You could replace it, if need be, with my SKU8 or SKU10. The second is a flexible anode for low clearance.

    Randy Schuyler

    #22683
    Guest

    Thanks, Randy. Now don’t laugh, but aside from length, will most tanks accept the same anodes? I mean, are they more or less interchangeable when dealing withajor brand tall 40 gal tanks? Install are easy, repairs are not as benign as I am learning. All the tanks i am dealing with were purchased from either Lowes or Home Depot. Thanks again.

    #22684
    Randy Schuyler
    Keymaster

    Provided they are residential-type tanks, yes. Sometimes RV tanks and such get a little weird. Anything from Lowes or Home Depot will have a hex anode.

    Randy Schuyler

    #22685
    Guest

    So, let get this crystal clear: a hex-head will fit a hex-head. There’s no special diameter or special order possibilities? Got my 1/2″ impact gun,my 1-1/4″ impact socket, and a can of Blaster ready to go.

    #22686
    Randy Schuyler
    Keymaster

    You got it.

    Randy Schuyler

    #22690
    Larry Weingarten
    Participant

    Hello: All good except that the hex head needs a 1- 1/16th inch socket. I’d get a six point socket just to be sure it won’t round the corners of the old anode. 😉 Also, I don’t know what “Blaster” is, but if it is some sort of solvent or rust dissolver, I wouldn’t use it, as you don’t want ANY chemicals getting into your water. 😯

    Yours, Larry

    #22691
    Guest

    Thanks again. I had been under the impression that each tank manufacturer had their own specific anode rod. I didn’t realize any hex head will fit any tank. I mean a 3/4″ hex head. But does rod diameter matter when replacing the anode?

    #22692
    Randy Schuyler
    Keymaster

    In terms of making it fit, no. In terms of making the water heater last longer, yes. Thinner rods, shorter warranty, usually. 6-year-warranty, usually .75-inch-diameter. 12-year, .90-inch.

    Randy Schuyler

    #22694
    Guest

    Oh, one more question. What is the difference between resistored and not resistored?

    #22695
    Randy Schuyler
    Keymaster

    Rheem is the only one who uses those. The resistor is designed to lower magnesium’s higher driving current to that of aluminum and get the tank through the warranty period.

    Randy Schuyler

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