Produced by TRIAD Boiler Systems, Inc. (West Chicago, IL), the steel, vertical firetube boiler is designed to achieve high efficiencies by integrating full modularity with proprietary, versatile, and primary-secondary piping, according to the manufacturer. Applications include space heating, domestic hot water, low temperatures, and combination boilers providing space heat with domestic hot water or low temperature. Burners can be powered by gas, oil, propane, or combination fuel.