Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

boiling radiator

I have 2 American radiator Co 2 column radiators that were just added. I noticed that they both boil while full of steam I added a 1/2 inch to the legs away from the valve and they still boil. is this because its not really that cold yet, and the room is not cooling the rad ?


  • JB_8
    JB_8 Member Posts: 85

    Did you put fiberglass insulation on the supply pipes to the radiators?
  • thfurnitureguy_4
    thfurnitureguy_4 Member Posts: 398

    No. My supply comes from the celing, blows down through the floor, Ts over and than back up to the rad. The drip past the T goes to the wet return. I was going to leave The supply exposed for more radiation like the others in the building (that dont make any noise) What am I missing?
  • Rodney Summers
    Rodney Summers Member Posts: 748
    Beano is for rumblings

    One pipe radiator, I think?

    Is the valve either wide open or wide shut? Anywhere in between calls for gurgling.

    Rusted valves don't easily open all the way. Tear them open to take a look and clean them up.

    Another idea.

    Check to see also if it isn't a pile of dirt that is restricting the return flow. Your tilting the radiator might have shuffled a lot ot dirt towards the intlet.
  • Rodney Summers
    Rodney Summers Member Posts: 748
    It's not Jay, am I eating your cookies, Invision help needed

    I noticed this last post by me went under a different name. I don't understand were the mix up comes from.

    Is there any explanation for this? Am I doing something wrong?

    Sorry and thanks.
  • thfurnitureguy_4
    thfurnitureguy_4 Member Posts: 398

    Valves new and open wide, yes a 1 pipe system, flashlight look shows no obstruction. A question. If the opening where the valve goes has a bushing, won't it fill up with water to the spill leavel of the spud? These rads came with a 1.5 to 1" bushings. I did change them it to a 1.5" to 1.25" bushing. I would think it would now have a lower water level inside. Perhaps less water boils quicker?
This discussion has been closed.