Emissions standards for boilers are becoming very stringent in many areas. The ability of the boiler to meet emissions regulations depends on the type of boiler and burner options. O’Brien Boiler Services has options to meet 5ppm NOx regulations, as well as 1 ppm CO regulation at 30 ppm NOx out of the box. We can also custom-engineer Selective Catalytic Reduction (SCR) for more rigorous emissions controls.