Click here to Find a Contractor in your area.
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/.

EDR of this radiator?

I have a radiator I can't identify. Seven small tubes, 12" wide, 38" tall. It's on a hot water system, originally gravity. I have three like this, various section counts.




Comments

  • MilanD
    MilanD Member Posts: 1,159
    This should be pretty accurate.
  • steamedchicago
    steamedchicago Member Posts: 72
    MilanD said:

    This should be pretty accurate.

    It, and any other reference I've found, doesn't cover 7 tube radiators 38" tall. I can extrapolate, but I'm hoping someone has a better guess.
  • MilanD
    MilanD Member Posts: 1,159
    I realized after posting it doesn't have the height. Perhaps someone here has the EDR book.
  • Steamhead
    Steamhead Member Posts: 14,863
    There's no name visible, but I think National was the only company that made a 38" tall, 7-tube radiator. Ratings are in Dan's "E.D.R.".
    All Steamed Up, Inc.
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • steamedchicago
    steamedchicago Member Posts: 72
    Thank you. There's a 1926 (year the house was built) national catalog available at archive.org https://archive.org/details/NationalBoilersAndRadiatorsCatalogNo.35_517 The style is called 'aero'.

    That tells me 7 square feet a section, which was what I'd extrapolated from the tables I'd found. That seems oversized for the room it came out of, but we knew that.

    All of my radiators are this style, in various widths, heights and lengths, except in one bedroom, which has a column type, and a basement one which is a more deco style (and a recent addition).

    Catalog says lengths to 32 sections; I have a seven tube, 38 section, 20 inch high radiator in my living room. I wonder if it was specially ordered, or the builder put it together from two smaller ones.