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Very Loud Boiler Circulator Pump
Hello! I live in a 20 unit co-op, three connected buildings, heated by a gas boiler and radiators. When the heat is turned on there is a loud, high pitched hum that echos from the pipes throughout my unit 24/7 - even though I am in the furthest building from the boiler room. The noise is driving me insane.
Attached are some photos of the circulator and a video
where you can hear it running.
Reading through these boards I am convinced the the circulator should be nearly silent. However, the boiler company says it is "working fine." I need some more info to convince the co-op board that something needs to be done!