Replacement Anode for AO Smith

Discussion in 'Water Heater Forum, Tanks' started by Kevin in Michigan, Jan 3, 2010.

  1. Kevin in Michigan

    Kevin in Michigan New Member

    Messages:
    2
    Location:
    Milford Michigan
    This site is great. Wish I'd read about AO Smith reputation before installing one.... oh well. Model is GPSH 50 200. Hot water smells (like sulpher). No smell on cold water. I soften my well water. Mfr date is 7/2005. Installed late 2005. I have read recommendations on this site to leave anode alone, but feel I have to replace or add a second rod. Is it correct that original rod is not under either the water inlet or outlet? There was mention on this site of a sectional rod offered by AO Smith that installs below hot water outlet line. Can someone provide a part number or a link to the part? Expert guidance will be much appreciated.
  2. Cass

    Cass Plumber

    Messages:
    5,980
    Location:
    Ohio
    Look for a hex nut on the top of the heater...it will be attatched to it...you will need an impact gun or a long breaker bar and socket to remove the old one...they sell new ones at Home D and plumbing supply houses...
  3. Kevin in Michigan

    Kevin in Michigan New Member

    Messages:
    2
    Location:
    Milford Michigan
    Thank you Cass

    Much appreciated..... will do this weekend.

    Again, I really appreciate this site.
  4. Basil

    Basil New Member

    Messages:
    1
    Location:
    Tennessee
    I'm having the same issue, and wondered if this worked for you or was it a dead end?
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,270
    Location:
    Cave Creek, Arizona
    If you have an odor problem use an aluminum rod, not magnesium.
  6. dargo

    dargo New Member

    Messages:
    36
    Location:
    MA
    I still cannot understand why they posted "Wish I'd read about AO Smith reputation before installing one.... oh well."...They are inline with all other tanks if installed correctly...They work like all others and all need some maintance time to time.
  7. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,270
    Location:
    Cave Creek, Arizona
    Out here it is "Welcome to (name your Western state), now go home". You are correct that EVERY manufacturer has his share of bad heaters, and it is the "luck of the draw" whether the one you get will last one week or twenty years.
  8. oldanbo

    oldanbo New Member

    Messages:
    21
    Location:
    Sequim,WA
    Having the same issue here. House built and w/h installed in 1997. AO Smith 50 or 55 gal with external recirc installed. Question is, any idea what I should expect to pay a plumber to replace anode? I'm gettin too old for doing some of this myself.
  9. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,815
    Location:
    New England
    It shouldn't be more than the basic service call plus the cost of the part (cheap). Note, sometimes they can be a bear to get out, but the plumber should have the right tools to remove it. Sometimes, if it is near the end of its life, just the jarring of removing it could hasten its demise. The easiest way to remove it is with an impact wrench (which is how they are installed). If you don't have enough vertical height, then you will need a segmented one (which can be bent).
  10. dargo

    dargo New Member

    Messages:
    36
    Location:
    MA
    Is your water that bad you need to replace? I have never replaced on in 25 years...AO Smith is inline with all others..
  11. oldanbo

    oldanbo New Member

    Messages:
    21
    Location:
    Sequim,WA
    I'm probably the only one whose noticed it, so far.
  12. FloridaOrange

    FloridaOrange Plumbing Designer

    Messages:
    1,317
    Location:
    SW Florida
    Some water softener systems remove chemicals that kill certain bacteria, without the chlorination the bacteria livein the water heater and basically multiply with the magnesium rod. The bacteria is generally harmless but produces a sulfuric smell. Replacing the anod rod with an aluminum one as HJ suggests usually takes care of it.

    I designed a highrise just north of Miami that used a whole building softener without telling us, they added the system right before they opened. Within a month or two the GC was calling us looking for a solution. They had to replace the rods on 80+ 120 gallon heaters. Even better they moved the water heaters from where they were shown on the plans and tucked them under ductwork that was common in every unit. They had to cut each rod out and put in segmented ones..........
  13. MACPLUMB 777

    MACPLUMB 777 TROJAN WORLDWIDE SALES RP

    Messages:
    679
    Location:
    Houston, Texas, United States
    Look at the head of your rod if is smooth then it is already a aluminum rod

    if magnesium it will have a welding bead on top center of the head
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