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  1. #27
    Join Date
    Mar 2008
    Braintree, Ma.
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    It's a W-M WTGO tankless boiler so domestic hot water is included. There's only my wife & I and some weekend days the 2 grandkids are over and get a bath. Hot water usage is primarily kitchen, bathroom sinks and occasional full baths & showers (not every day). Not a lot of hot water used.
    Our oil costs (~2712/yr) are consistant since we have been under their fuel cap for last and this season.

    There is one problem with the hot water delivery plumbing. The mixing valve gets corroded and the built up residues affects it's behavior. If newly adjusted so water out of kitchen faucet is steaming after a couple of months it's still plenty hot but not steaming anymore. This problem is due to the "crap" in our city water supply. Also the burner relief valve shows lots of corrosion and discoloration after a while.


  2. #28
    Join Date
    Jan 2004
    Post Likes
    Your house heat is not costing you much then.
    Your domestic may be 150 a year or more.
    Contractor locator map


    How many times must one fix something before it is fixed?

  3. #29
    Join Date
    Feb 2008
    southern nj
    Post Likes
    If you decide to replace the burner assembly i would go with a Beckett

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