There are no rubber gaskets in Dunkirk boilers. Reliability Assured performance has placed Dunkirk Boiler quality at the top in trusted reliability, that's why we use Honeywell controls. Dunkirk Boilers are also certified. Strongest Warranty in the Industry Dunkirk backs all of its residential boilers with some of the best warranties available on the market. Most competitor warranties cover sections of the heat exchanger, while Dunkirk covers the entire heat exchanger and most are pro-rated making the homeowner financially responsible.
Warranties vary by product.
Consult each individual product for specific warranty. Warranty comparison should be part of your decision process when selecting a new boiler for your home. Compare and you will see - Dunkirk has the best warranty available. So Easy to Install Dunkirk Boilers are supplied assembled, with controls accessible and completely wired. Piping is at hand for easy connection to the system.