Boiler Knocking Noise

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    • #273076

      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

      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

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

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