Custom manufacturer of engineered packaged boilers and systems, biomass systems, integrated PLC boiler controls and accessories. Low NOx modular boilers and burner configurations available for all models. Watertube Boilers: Series O, A, D and Flex with sizes from 10,000 to 150,000 PPH, pressures to 1000 PSIG, with various fuel and auxiliary options available. Parts and service distributor/dealer network available worldwide. Hurst specializes in the manufacturing of modular biomass boilers systems with outputs ranging from 28 K to 52 MW thermal.