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Boiler not heating up enough...!

AMAC Member Posts: 1
Old Hydrotherm HC145 boiler is not heating up as well as it should.   The water temp is only getting to 120-130 degrees.   I have had it cleaned but I don't think it is getting enough oxygen.  I just had it cleaned and the chimney is clear.   Any Ideas??   Thanks!2


  • Tim McElwain
    Tim McElwain Member Posts: 4,588
    Do you get your

    domestic hot water from the boiler?

    What makes you think a lack of oxygen would cause you to not have enough heat?

    What is the limit on the boiler set to?

    Do you have baseboard heat or radiators?
  • DanCanDo
    DanCanDo Member Posts: 15

    Inlet gas pressure?
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