(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 9 of 9

Thread: Leaky Tank, Thermal Expansion or Pressure?

  1. #1

    Default Leaky Tank, Thermal Expansion or Pressure?

    Facts:
    30 Gal Kenmore (this is another story) self installed April 07.
    Closed system, PRV in supply line near heater.
    No expansion tank installed (haven't had one for 20 years).
    Situation:
    Yesterday morning early, my tenant calls and tells me he heard water running through the lines and traced it to the Hot water heater. Water was in the closet, running into the garage as well as a hallway inside the house.
    My inspection indicated no leaks at any of the fittings, T&P valve, and no condensation on cold water supply lines.
    The leak was comming from the bottom of the tank in a trickling stream not a drip (enough for the tank to be calling for supply...could hear it re-filling).
    I tested the T&P valve and it opened fine, when I did this, the trickle at the bottom of the tank stopped.
    Opening a hot water tap also stopped the trickle.
    When I turned the supply off, the trickle stopped as well.
    Because there is so much water on the platform it is hard to tell if there is any dripping when supply is interrupted.
    My understanding of thermal expansion indicates that there might be a cup or two of water forced out but not a constant trickle and certainly not as much as I am seeing.
    What is your best guess as to what is causing this leak?
    If it is a leaky tank, how do I convince Sears that a 4 month old H2O heater is faulty (they can't get a "technician" out to check it out for another 8 days).
    Ozarkobie

  2. #2
    DIY Senior Member Mike Swearingen's Avatar
    Join Date
    Jan 2005
    Location
    On Albemarle Sound In Northeastern NC
    Posts
    621

    Default

    You obviously have a ruptured water heater tank or lower welded fitting.
    Either way (A) you probably need an expansion tank with a PRV, and (B) Sears owes you a new water heater under warranty, unless they weasle out due to a DIY job.
    Good Luck!
    Mike

  3. #3
    Plumber BAPlumber's Avatar
    Join Date
    Jul 2007
    Location
    Vashon, Washington
    Posts
    227

    Default

    does Sears know that there is property damage happening? If it is a warranty issue they would be liable for the damage, I would think. Everyday they wait the damage is greater.
    Brent

  4. #4
    Master Plumber master plumber mark's Avatar
    Join Date
    Feb 2005
    Location
    indianapolis indiana - land of the free, home of the brave....
    Posts
    4,243
    Blog Entries
    1

    Talking do it yourself

    Quote Originally Posted by ozarkobie
    Facts:

    If it is a leaky tank, how do I convince Sears that a 4 month old H2O heater is faulty (they can't get a "technician" out to check it out for another 8 days).
    I love it when I hear that Sears cant come out for a week on a warranty service issue.....
    it makes that low- low price you paid all worth-while , dont it??



    they should have offered you a thermal expansion tank
    ----unless you installed this yourself...

    they cant be liable for damages if you did not want a thermal expansion tank
    or did the work yourself.... .




    to save yourself a lot of time...
    just install another t+p valve on the heater yourself
    and see if that stops the leak....

    if that solves the problem, , this will happen again so

    get a thermal expansion tank,
    and have someone install it....


    and forget about sears, call and cancel or

    they will charge you about 95 bucks
    for the "look see" inspection on that heater...
    even though it is still "under warranty"



    becasue the service call is not free if its not leaking..

    and they usually
    will arrive somewhere between the hours of 8 am to 5 pm....
    so you usually get to sit around all day waiting on them........


    god I really do love those fellows..

    they make me look soooo good.

    .

  5. #5

    Default

    That is part of the "another story"
    I hope I don't have to YouTube this puppy, but it is a possibility
    Ozarkobie

  6. #6
    Master Plumber master plumber mark's Avatar
    Join Date
    Feb 2005
    Location
    indianapolis indiana - land of the free, home of the brave....
    Posts
    4,243
    Blog Entries
    1

    Talking U-Tube for plumbing

    I have never cosidered U tube for plumbing concernss...


    everything else can be found on there

    from someone pulling out their nose hairs
    with needel nose pliers


    to great political debates in the senate....



    I suppose you could post your story too....

  7. #7
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,382

    Default

    Sounds like a seam split or something like that with the increased pressure caused by heating the water without an expansion tank. Normally, the weakest part is the T&P valve (by design). Any tank should hold and not be damaged at the pressure that is limited by the T&P. But, once you get that damaged one replaced, it is likely the T&P will open. Did you do some other maintenance like replace toilet fill valves, etc. in this apartment? If there was a valve that was leaking, and you fixed it, that will then create excessive pressure in the house without an expansion tank. With a working prv, you always need an expansion tank.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  8. #8

    Default

    I have not done any repair on any plumbing fixtures since installing the H2O heater. Everything was working fine for 4 months...that is what puzzles me and why I think it must be the tank. I lived in this house for 15 years and never had a problem with any leaking. In fact the H2O heater I replaced was the original heater that was installed when the house was built, it was 24 years old! I drained it several times over the years but never had to do any other maintenance. It was a RHUD.
    This Kenmore was not my first choice, even though some are rated higly, I pushed my luck too far and had to get one in a hurry and it had to be less than 18" in diameter...small closet. $299 ain't gonna break me but I don't appreciate the attitude and the false promise of satisfaction from a major company.
    If I can't get hot water maybe I can get someone into some.
    Thanks for the feed back everyone!
    Ozarkobie

  9. #9
    Consultant cwhyu2's Avatar
    Join Date
    Aug 2007
    Location
    Cincinnati OH
    Posts
    1,330

    Default

    the warrenty states on the w/hs I installed in the past PRV on main and no
    exp tank,w/h tank ruptues,warrenty void.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •