Product Lines

McDonnell Miller Hydronic Heating Controls

McDonnell Miller is a global leader in both the engineering and manufacture of hydronic heating and boiler controls.  McDonnell Miller manufactures a suite of hydronic products such as boiler controls, level controls, flow switches, low water cut-offs and air flow switches.  Northern Plumbing Supply stocks both McDonnell Miller hydronic controls and repair parts for new and no longer available materials.  To shop for McDonnell Miller products at Northern Plumbing Supply, choose the Shop Now button in the upper right hand corner of the screen.  For more information you can follow the link below to the McDonnell Miller website.