Johnston Boiler Company manufactures the worlds largest Scotch marine firetube boiler. Johnston pioneered the first water backed boiler over 100 years ago and the first packaged boiler over 65 years ago. Johnston boilers are built to last and carry the only 15-year warranty in the industry. In addition to the quality and dependability, the conservative design provides excellent fuel to steam efficiency resulting in the best life cycle costs in the industry.
Johnston also offers a full line of deaerators, surge tanks and blow down heat recovery systems. These feedwater systems are also designed and built to a quality standard which allows us to offer a 10 year warranty, the only one in the industry.
Johnston is well aware of the changing environmental requirements. While our standard Johnston burners can attain less than 30 ppm NOx, we know that some regions of the United States are requiring NOx emissions as low as 9 PPM.