Pentair 125 noise


New member
Sep 12, 2020
Hey I’m hoping if someone can tell me if I’m just worrying for nothing, or if my heater is making a strange noise. I have a pentair 125 propane heater and it makes a strange humming noise while operating, but only when it’s burning. I’m not sure if it’s normal or not, it lights fine and seems to run fine but makes a deep hum. I’m not sure if my gas flow isn’t correct and it’s burning weird or what.


TFP Expert
Mar 2, 2011

Do you have a video of the heater startup and running?