Anode length matter on water heater

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by swimman, Jan 13, 2009.

  1. swimman

    swimman New Member

    Messages:
    1
    I have a 75 gallon Rheem gas hot water heater that I had to replace the anode on. I purchased a magnesium anode which I think was 36". The original anode is 44". Will using the shorter anode has any negative effect?

    Thanks.
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,134
    Location:
    New England
    Won't last as long...unless it is thicker...less material. That's why they call it a sacrificial anode...it erodes rather than the tank.
  3. seattleplumber

    seattleplumber Service plumber.

    Messages:
    20
    Location:
    Seattle, WA
    It's fine. Use it.
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