Boiler Knocking Noise

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  • This topic has 2 replies, 3 voices, and was last updated 24 years ago by Avatar photoSylvanLMP.
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    • #273076
      Avatar photoAnonymous

        I have a 135Btu/hr Peerless boiler
        used for home heating. Approx. 2 to
        3 minutes after burner comes on a
        knocking noise starts in boiler,
        fairly loud, can hear throughout
        home. When burner shuts off, noise
        stops within 1 to 2 minutes. If I
        completely drain boiler and refill,
        the noise does not reappear for
        approx. 6 to 7 days. The noise
        sounds almost like a “boiling”

      • #286848
        Avatar photoGuest

          sounds like you may have some clogged water ways in the a heating tech all that may be needed is to clean the boiler water.

        • #286849
          Avatar photoSylvanLMP

            Sounds like a condensate return problem. Check your air vents and pitch Good luck

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