Ultra 94.1% Efficient
  • Gas fired water boiler with cast aluminum heat exchanger
  • Venturi mixing body mixes air and gas providing higher efficiency
  • Designed to operate in low temperature condensing applications
  • Outdoor reset and domestic hot water priority standard
  • Negative regulated gas valve precisely delivers gas to the boiler
  • U-Control gives you the power for easy set-up and maintenance
  • Modulates with 5 to 1 turn-down ratio
  • Variable speed motor matches combustion output to heating needs
  • High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications
15B Series II
  • Quality Heat Exchanger Design - The 15B Series II features a robust cast iron heat exchanger for longer boile life. The sections are connected with cast iron push nipples, which expand and contract at the same rate as the sections ensuring a water tight seal. Available in a full range of sizes from 45 MBH up to 295 MBH Input capacity.
  • Efficiency - The 15B Series II provices an annual fuel utilization efficiency of 82% as certified by the US Department of Energy testing standard.
GV90+
  • Leading High Efficiency Cast Iron Boiler at 91% AFUE
  • Low maintenance durable design
  • Easy setup with streamlined controls
  • Worry free operation
Q95M-200 Modulating Condensing Boiler
Dunkirk's Q95M-200 gas-fired, modulating condensing boiler was the first boiler to achieve a 95% AFUE rating. This boiler is perfect for heating equipment replacement jobs where you’re looking for high efficiency. It’s also a great choice for new homes, any radiant-heating application, and where you need lots of domestic hot water. The Q95M boiler has modulating capacity from 80- to 200 MBH. It comes with outdoor-temperature reset, and domestic hot-water heating priority. You can easily pipe the intake- and flue gases with easily available three-inch PVC, and run that line up to 60 feet. The installer has the option of left-, right- or rear exit for the return plumbing and gas piping. Piping connections on the rear and top of the units make it easy to use more than one Q95M boiler in close-tandem. The integral condensate trap requires no field assembly, and to make it even better, the Q95M boiler comes with a standard 115v convenience outlet.

RADIANT HEAT

CGa - Gold Series
  • High-Efficiency​
  • Easy to Service​
  • Quality Material​
  • Residential and Light Commercial
Why Invest in High Efficiency?

The Value of Efficiency
Heating is the largest energy expense in most homes, accounting for more than half of annual energy bills in colder parts of the country. Homeowners can significantly reduce their energy bills by using
high efficiency boilers. High-efficiency boilers, most especially condensing boilers, may be more expensive initially, however, with lower monthly energy bills, the extra first cost is quickly paid back.

Helix VLT - Vertical Laser Tube Condensing Boiler
Innovative. Efficient. Dependable. Dunkirk.
The new Helix VLT features an EnergyStar rating of 96%. The VLT's high efficiency along with Sealed Combustion and Outdoor Temperature Reset* add up to BIG savings!

Lower Your Heating Bills with Dunkirk Boilers

The increased efficiency of the VLT could save you up to 40% on your heating bill each year. If you pay $1,800 annually to heat your home, you could save as much as $720 per year.

ECO Wall Mount Gas Boiler
  • Class-leading 70,000, 110,000, and 155,000 BTUH models
  • Exceeds Energy Star requirements at 95% AFUE efficiency rating
  • Durable stainless steel fire tube heat exchanger
  • Streamlined design configurable for installation
  • Display can be mounted on the boiler or wall (up to 2’ away)
  • Components positioned for fast and easy service
  • Multiple vent configurations and material options
  • Optional accessories to match virtually any installation
DXL Series
  • Up to 83.5% AFUE Gas Fired Hot Water Boiler
  • Dependable Cast Iron Heat Exchanger with Cast Iron Push Nipples. The Sections and Push Nipples expand at the same rate when heated. By using similar materials instead of less expensive gaskets the boiler maintains a water tight seal over time.
  • Advanced Fuel Smart Hydrostat Control: 3 Functions in 1 Control
    • Temperature limit with LED display and easy dial settings. Diagnostic and function indicator lights.
    • Low Water Cut-Off (LWCO), protects the boiler from damaging low water conditions.
    • Boiler Reset, lowers the boiler temperature to save fuel by turning on the burner only when needed. Setup is quick with no need to install an outdoor sensor; just dial in the number of heating zones.
  • Atmospheric Chimney Vent Boiler with Integral Draft Diverter. The Integral Draft Hood reduces the overall height and footprint of the boiler making it ideal for low clearance/space limited installations.
  • Textured paint Jacket with easy service access.
  • Cast to Last Warranty
    • 20 year non-prorated limited warranty

"We Assure 
Your Comfort"