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Williamson-Thermoflo GSA-250 - 157K BTU - 83.0% AFUE - Steam Gas Boiler - Chimney Vent
Model:
GSA-250-N-IP
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Recommended Accessories
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Optional Accessories
4
$100.00
Factory-Direct
$157.00
Factory-Direct
$336.00
Factory-Direct
Model: 400
$239.00
In-Stock
Features
- 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.
"Uncover warm possibilities" with Williamson-Thermoflo's GSA gas fired steam boiler. The highly efficient GSA-250-N-IP pumps out 250,000 BTUs with an AFUE (annual fuel utilization efficiency) rating of 83.0 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.
Specifications
GSA-250-N-IP
General Information
Product Line
GSA
Medium
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Steam
Heat Exchanger Material
Cast Iron
Fuel Type
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Conventional
Vent Type
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Chimney Vent
DHW Production
DHW Production
DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
No
Modulating/Staging
Modulating/Staging
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Single Stage
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
2000 Feet
Includes Pump
No
Assembly Type
Packaged
Performance
AFUE
AFUE
AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
83 %
Maximum Input Capacity
Maximum Input Capacity
The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
250000 BTU
DOE Heating Capacity
DOE Heating Capacity
Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.
209000 BTU
Net I=B=R Capacity
Net I=B=R Capacity
I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.
157000 BTU
Ultra Low NOx Emissions
Ultra Low NOx Emissions
NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx. Learn More
No
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
8 Inches
Gas Connection Size
3/4 Inch
Supply Connection
3 Inches
Return Connection
2 1/2 Inches
Product Height
41 7/8 Inches
Product Width
41 1/2 Inches
Product Depth
39 3/8 Inches
Product Weight
660 Pounds
Shipping Weight
670 Pounds
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Heat Exchanger Warranty
10 Years
Reviews
(4)
Williamson-Thermoflo GSA-250-N-IP Reviews & Ratings
The Williamson-Thermoflo GSA boiler is a great choice for gas-fired steam applications that call for a packaged*, durable, reliable, easy to service product. Over the years, most features that you'd want have become standard - stainless steel burners, included vent damper, and draft diverter. Also, out of the box you can expect: gauge glass, pressure gauge, high limit pressure control, probe-type LWCO, relief valve, and drain valve. The one-piece access door, coupled with easy-to-reach controls, make servicing this boiler as easy as possible. Unfortunately, the GSA boiler is only available for natural gas applications, so LP users must look elsewhere. *The largest size, GSA-300, is not packaged.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Great boiler
By Allen C.
Union, New Jersey
Purchased 09/25/2018 |
Review Posted 11/01/2018
Great product. Live in NJ waited 2-3 weeks but best price from dealer to front door.
Allen C. Recommends This
Was this review helpful?
Rating Breakdown
4/5
5/5
5/5
5/5
I ordered a new boiler, You delivered . . .PEACE OF MIND!
By Steven H.
Norristown, Pennsylvania
Purchased 11/05/2015 |
Review Posted 12/26/2015
Several years ago my wife and I purchased an old 3 story Victorian style home in Norristown, PA. The house had an old oil fired steam boiler that literally vibrated the floors every time it started. Well, last winter the old boiler sprung several pin hole sized leaks and shortly thereafter it failed.
I started doing research and found your website, used your calculator and made the purchase. Once delivered, my wife and I took over from there with the installation. We went from an old, noisy and messy oil fired boiler to a very quiet, efficient and very satisfying gas fired steam boiler.
Thank you for delivering...PEACE OF MIND!
I started doing research and found your website, used your calculator and made the purchase. Once delivered, my wife and I took over from there with the installation. We went from an old, noisy and messy oil fired boiler to a very quiet, efficient and very satisfying gas fired steam boiler.
Thank you for delivering...PEACE OF MIND!
Steven H. Recommends This
Was this review helpful?
Rating Breakdown
4/5
4/5
5/5
5/5
By Mircea I.
IL
Review Posted 12/08/2010
Built by a division of Weil McLain the boiler it is similar to their products. Seems to be build well and I hope to have years of trouble free working status. A little difficult to install given the position of the ports. I will recommend this product to others.
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
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Williamson-Thermoflo GSA-250 - 157K BTU - 83.0% AFUE - Steam Gas Boiler - Chimney Vent
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