AirPro recently built a couple of high pressure blowers for a US paper mill upgrading their power-generating boiler system from coal to biomass. The blowers are supplying the combustion air for the new burner system. Special attention had to be given to proper pressure and air flow as the blowers were required to be located a floor below the actual boiler due to space restrictions. AirPro supplied the fan skid complete with inlet filters/silencers and installed the damper/actuator system, designed and supplied by the plant manager/project engineer overseeing the project.