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noisy W/M GO boiler

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Dwitzee
Dwitzee Member Posts: 2
in THE MAIN WALL
Have had two service calls for a noise, get to jobsite to find GO boiler making a whistle/groan noise as boiler heating up. Doesn't seem to be air related. Any insight would be helpful.  Thanks.

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  • billtwocase
    billtwocase Member Posts: 2,385
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    I would

    pull the top jacket off, and look at the top where the sections meet. Had some 68 series years back that would whistle thru a leaky "O" ring when it was heating up. You don't always see the leak
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