Plymouth Water
Natural or Propane Gas-Fired High Efficiency Atmospheric Water Boiler

Heating Efficiency
The high efficiency of the Plymouth hot water boiler is an outstanding performance and low operating costs.

Honeywell Electronic Ignition (Option)
Pilot is lit automatically and stays lit only when needed, eliminating fuel waste.

Integral Draft Diverter
Dunkirk utilizes built-in draft diverter technology that is factory designed to protect against harmful carbon monoxide back drafts. Unlike competitor diverters erected in-field, Dunkirk eliminates any installation guesswork to ensure your family’s safety.

Effikal Vent Damper
Automatically closes when the unit turns off, preventing heated air from escaping up the chimney. Effikal provides the strongest vent damper warranty in the industry.

Titanium Burners
Dunkirk’s exclusive high-tech titanium composite burners resist corrosion and oxidation while withstanding more heat than conventional stainless steel or aluminized burners. They provide superior strength and longevity and are backed by a full 3-year warranty, triple the industry standard.

Cast Iron Sections & Push Nipples
Dunkirk utilizes cast iron to construct the boiler’s heat exchanger to provide heat transfer, reliability and strength. Since like materials expand and contract in the same proportion during heating and cooling, cast iron push nipples and sections produce stronger, more water-tight seals than steel push nipples or rubber gaskets.

Easy Installation
Surprisingly compact, the Plymouth Steam II Boiler fits in tight spaces and is supplied assembled, with controls that are accessible and completely wired. Piping is also at hand for easy connection to the system.

Easy Maintenance
Low water cutoff is electronic therefore results in no homeowner maintenance. Controls are easily accessible without having to remove the jacket, and our standard Honeywell controls are readily available, making Dunkirk Boilers easy to service.