Whistling water heater

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    • #272471
      MasterPlumbers
      Keymaster

      I have an Amtrol water heater that
      is an add-on to my boiler system
      (ie – one of the zones on my boiler). When the water heater calls for heat, there is a loud whistling (like blowing air across an empty beer bottle). It only occurs when there is boiler water circulating in the loop.

      Any suggestions would be appreciated.

    • #285790

      Hi DAVE,
      Sounds like a bad circulator or a stuck valve in the closed position.

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