Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit

little flames and end of tubes when unit is off

dpotete Member Posts: 1
I have a natural gas boiler and when the unit is not running there are little yellow flames near the air shutters by the manifold.  I went online to find a picture to know what to call the parts.  Sometimes there will be little blue flames flickering on the burners themselves, again when the unit is not running or calling for heat.  You can blow them out but usually they return after the unit has run then shut off again.  Easy fix?  Dangerous?  Expensive?


  • JStar
    JStar Member Posts: 2,752

    Incredibly dangerous. Shut the unit off and call a professional. Sounds like a leaking gas valve.
  • Steamhead
    Steamhead Member Posts: 15,026

    turn off the gas and call a pro NOW!
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
  • j a_2
    j a_2 Member Posts: 1,796

    Good idea to turn it off…Couple of questions, was the appliance ever exposed to water,and was tape used at or near the gas valve….J A
This discussion has been closed.