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


nino Member Posts: 1
Just bought lochinvar gas boiler the header for boiler is 1inch 1/4 now with a 1inch 1/4 spirovout.  Do I have to increase header to 11/2 or could I reduce the boiler to 1inch1/4.  The header and spirovout are new.


  • Tim McElwain
    Tim McElwain Member Posts: 4,480
    Nino, be a little more specific as

    to what you are doing as sizing depends on the system piping and length of same. Not quite sure what you are looking for?
This discussion has been closed.