"Uncover warm possibilities" with Williamson-Thermoflo's GSA gas fired steam boiler. The efficient GSA-150-N-IP pumps out 150,000 BTUs with an AFUE (annual fuel utilization efficiency) rating of 82.9 percent. The GSA is also designed with a generous heating surface and an automatic vent damper to maintain that efficiency. This factory-packaged boiler is equipped with many features, such as a spark (intermittent) pilot system, cast-iron sections, and an insulated heavy-gauge steel jacket. The GSA is also easily serviced with all controls in reach and a one-piece access door. Since it is factory tested and comes with a limited 10 year warranty on boiler sections, you can be absolutely sure that your investment is reliable and built to last.
Every single GSA boiler is factory tested, ensuring reliability and properly functioning equipment.
GSA boilers are factory packaged meaning that the boiler comes to you with cast iron sections and the boiler assembled and ready for installation.
Service is simple with a one-piece access door and easily accessible controls.
10 Year Warranty
A limited 10 year warranty on boiler parts means that you can rest assured that your investment is covered, should there be a problem.