Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

We ship to most places in continental USA
Chat with us
Need help
Our Locations

Williamson GSA-200-N-IP-S2-W GSA Series 2 High Efficiency 200,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

SKU
GSA200CEI

In Stock. Ships in 1-7 Business Days.

Retail : $6,394.00 - $2429.72 =
$3,964.28 You Save (38%)
selected

selected

selected

selected

- +

Product details

Williamson GSA-200-N-IP GSA 200,000 Input Natural Gas, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

"Uncover warm possibilities" with Williamson-Thermoflo's GSA gas fired steam boiler. The highly efficient GSA-200-N-IP pumps out 200,000 BTUs with an AFUE (annual fuel utilization efficiency) rating of 82.8 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.

Factory Tested
  • Every single GSA boiler is factory tested, ensuring reliability and properly functioning equipment.
  • Factory Packaged
  • GSA boilers are factory packaged meaning that the boiler comes to you with cast iron sections and the boiler assembled and ready for installation.
  • Easy Service
  • 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.

Boiler Components

SKUDescription
GSA200EIWMW GSA-200 EI Boiler Only
450021293WTWMW 450021293WT GSA175-200 Draft Hood 7
381800477WMC Vent Damper 7 EG50/55 381800477
Williamson
See All Williamson Products

Specification Sheet

Basic Information
MPN ? Manufacturer Part Number GSA-200-N-IP-S2-W
Manufacturer Williamson
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. GSA Series 2
Dimensions and Measurements
Weight ? Weight 590.00
BTU Input 200,000
AFUE 82%
Vent Size (Inches) 7
Voltage 120V
Phase 1
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. 33-3/4"
Width (Inches) ? The horizontal measurement from left to right, measured in inches. 25-1/2"
Characteristics and Features
Material ? The material(s) used in the construction of the product. Cast Iron
Boiler Type Residential/Commercial
Fuel Type Natural Gas
Venting Chimney Vent
Venting Type Atmospheric Vent
More from Williamson


By using this site you agree to our Terms, Conditions of Use and Privacy Statement
© 2025 AF Supply Corp. All Rights Reserved.