​For 150 years, Johnston Boiler has been manufacturing the highest quality products. With an innovative spirit from day one, J.W. Johnston saw the untapped potential of the area and seized the opportunity to turn a broken down boiler company into the nation’s top supplier.​

Johnston Boiler Company manufactures the worlds largest Scotch marine firetube boiler. Johnston pioneered the first water backed boiler over 100 years ago and built our first packaged boiler over 65 years ago.