• Cast Iron Section & Push Nipples

    Cast Iron Section & Push Nipples

  • Titanium Burners

    Titanium Burners

PSB Series II

PSB Series II

We've been making American steam boilers for more than 80 years. Dunkirk's Plymouth Steam (PSB) Boiler offers a great combination of heating comfort, efficiency, and Dunkirk dependability. With efficiency as high as 82.7%, a Plymouth Steam boiler is an outstanding choice for performance, and economic first- and operating cost.


  • Efficiency: Mid-Efficiency
  • Capacity: 75 - 112.5 - 150 - 187.5 - 225 - 262.5 - 299 MBH
  • Heat Exchanger: Cast Iron
  • Combustion: Atmospheric
  • Venting: Vertical Vent
  • Boiler Type: Steam
  • Up to 82.7% AFUE rating saves you money on fuel.
  • Electronic ignition is simple and reliable.
  • Integral draft diverter saves space
  • Vent damper for added efficiency
  • Titanium burners that are built to last
  • Cast-iron sections and cast-iron push nipples make this a classic design.
  • Electronic low-water cutoff
  • Natural gas or propane - Your choice!

Documents / Resources

Product Testimonials

  • Very quiet running unit. Heats home quickly

    Springfield Gardens, NY