The Xcelon makeup air unit is a traditional rooftop unit combined with a fully modulating condensing hydronic boiler. The unit features a high-efficiency condensing hydronic heat exchanger and is controlled by an integrated control platform that is designed to reduce gas operating costs while low internal static pressures reduce electrical operating costs. Xcelon units are available in capacities of 4,501 cfm to 15,000 cfm, are operational to -30°F, have operational efficiencies as high as 93 percent, and have heating capacities of 800 to 1,600 MBH. —Sterling HVAC Products, a Mestek Co.

Booth 1503