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Cleaver-Brooks Hot Water Firetube Boilers

As the founder of the packaged boiler, Cleaver-Brooks knows all about the power of integration. Today, the rules still apply. Cleaver-Brooks engineers the firetube boiler along with the burner, controls and ancillary components as an integrated package to achieve maximum efficiency and the lowest possible emissions.

The EX models are designed with extended heat transfer tubes that result in even higher efficiencies, lowest emissions and a 15% smaller footprint. The CBEX Elite model is the only boiler package to maintain 3% oxygen across the full operating range with 30 ppm NOx performance when using natural gas.

Size Range

15 – 2,200 HP


For reliable response for low/high-temperature pressure heating, multiple fuel firing. Applications include heating for universities, medical facilities, office complexes and process applications such as manufacturing, food processing and pharmaceuticals.


Natural gas, #2 oil, #6 oil and combination


30 to 125 psig


< 9 ppm NOx to < 30 ppm NOx