Depending on the application, boiler systems are used throughout many different industries for generating steam and electric energy. Boiler applications require forced draft fans to provide combustion air as well as induced draft fans to remove products of combustion and maintain the required draft. Over-fire air fans, primary air and FGR fans are utilized to circulate flue gases to various parts of the system. Chicago Blower is a leading provider of pre-engineered and custom heavy duty fans for boiler systems.