• PSB Series 2 Boiler
  • Cast Iron Section & Push Nipples

    Cast Iron Section & Push Nipples

  • Titanium Burners

    Titanium Burners

PSB Series 2

PSB Series 2

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 - 150 - 187 - 225 - 262 - 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

  • Yes the boiler I have is so nice. Small, compact it does not take up a big foot print and it is also energy-efficient.

    Just keep making the best products cause if I know if any of my friends and family needs one of your products I will definitely give them a heads up about your company and products.

    Thomas Freh
    Lockport, NY
  • Care and comfort.  Your product is very nice.

    Eric Harlan
    Chicago, IL
  • Sure it's a very efficient and easy to install product

    GQ Plumbing
    Yonkers, NY
  • Product works well.

    Why was finding/buying a boiler so difficult companies gave quotes but never find boilers lucky i found Heatmaster....

    Peter Lukic
    Chicago, IL

    George Lennox
    Valley View, OH
  • Great product great heat best for Efficiency

    Paul Perez
    Bergenfield, New Jersey
  • Always spec Dunkirk when installing Steam boilers

    Littleton, CO
  • Very quiet running unit. Heats home quickly

    Springfield Gardens, NY