Our company of quality hydronic-heating products, has introduced more new, high efficiency products over the last several years than any other company at any time in the history of hydronic heating! From new ENERGY STAR certified, gas-fired residential boilers… to high efficiency oil-fired boilers including advanced design, three-pass, cast iron boilers… along with the industry’s only, three-pass, oil-fired, steam boiler… and the only atmospheric gas boiler made in America, the ES2, boasting 85% AFUE. Together, the expansive lineup of heating products from U.S. Boiler Company boasts the highest average efficiency, exceeding 85%… with maximum efficiencies over 95%.
