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gurgling sound when hot water boiler is heating water

Wally_2
Wally_2 Member Posts: 3
in THE MAIN WALL
I have like a gurgling type of sound when my hot water boiler is on.When it shuts off and the circulating pump is on the noise goes away.I hear it only when the burner comes on.Can you help,thanks,Wally

Comments

  • Travis_4
    Travis_4 Member Posts: 7


    Sounds like air in the system? Do you ever have any zones not heat? The first thing I would try is to purge the system of air first
  • Jason_25
    Jason_25 Member Posts: 22


    if the sound is only there when burner is on it is most likley calcium or other deposits on bottom of boiler.
  • lee_7
    lee_7 Member Posts: 457


    how old is boiler. Is the sound like an old fashioned popcorn popper? If so, boiler has layer of " mud" on bottom and when burner is on the air under mud pops and perculates. If boiler has domestic coil, you can drain boiler and remove coil. then take garden hose with a good nozzle and blast away mud. Open boiler drain and flush mud out. You will need a new domestic coil gasket, but this has helps me before in getting rid of noise.
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