The Dunkirk Quantum Q90-100 Series Condensing Gas Boilers are available in 3 models with inputs of 50, 75, and 100 MBH with an efficiency of 90% AFUE. Dunkirk has been making gas and oil-fired hot water and steam boilers for residential and commercial buildings since 1928 in Dunkirk, NY. In 1999 The Utica Companies (Utica) […]