Weil-McLain Natural Gas Boilers

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DOE Heating Capacity (BTU) Learn More
DOE Heating Capacity (BTU)
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.
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Net I=B=R Capacity (BTU) Learn More
Net I=B=R Capacity (BTU)
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.
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Maximum Input Capacity (BTU) Learn More
Maximum Input Capacity (BTU)
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.
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AFUE (%) Learn More
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.
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Vent Type Learn More
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.
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Medium Learn More
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.
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Modulating/Staging Learn More
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.
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Ultra Low NOx Emissions Learn More
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.
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Product Line
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Price
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Efficiency (%)
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DHW Production Learn More
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.
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Product Height (Inches)
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Product Width (Inches)
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Product Depth (Inches)
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 158k BTU Gross Input, 135k BTU DOE Capacity, 117k BTU Net IBR Capacity. Includes Circulator.
Item#: 109161
Model#: 381359046
Brand: Weil-McLain
$4,008.53
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 158k BTU Gross Input, 135k BTU DOE Capacity, 117k BTU Net IBR Capacity. Includes Circulator.
Item#: 109162
Model#: 381359047
Brand: Weil-McLain
$4,008.53
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 190k BTU Gross Input, 162k BTU DOE Capacity, 141k BTU Net IBR Capacity. Includes Circulator.
Item#: 109163
Model#: 381359048
Brand: Weil-McLain
$4,516.43
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 190k BTU Gross Input, 162k BTU DOE Capacity, 141k BTU Net IBR Capacity. Includes Circulator.
Item#: 109164
Model#: 381359049
Brand: Weil-McLain
$4,516.43
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 190k BTU Gross Input, 162k BTU DOE Capacity, 141k BTU Net IBR Capacity. Includes Circulator.
Item#: 109165
Model#: 381359050
Brand: Weil-McLain
$4,516.43
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 190k BTU Gross Input, 162k BTU DOE Capacity, 141k BTU Net IBR Capacity. Includes Circulator.
Item#: 109166
Model#: 381359051
Brand: Weil-McLain
$4,516.43
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 222k BTU Gross Input, 189k BTU DOE Capacity, 164k BTU Net IBR Capacity. Includes Circulator.
Item#: 109167
Model#: 381359052
Brand: Weil-McLain
$4,933.81
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 222k BTU Gross Input, 189k BTU DOE Capacity, 164k BTU Net IBR Capacity. Includes Circulator.
Item#: 109168
Model#: 381359053
Brand: Weil-McLain
$4,933.81
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 222k BTU Gross Input, 189k BTU DOE Capacity, 164k BTU Net IBR Capacity. Includes Circulator.
Item#: 109169
Model#: 381359054
Brand: Weil-McLain
$4,933.81
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 222k BTU Gross Input, 189k BTU DOE Capacity, 164k BTU Net IBR Capacity. Includes Circulator.
Item#: 109170
Model#: 381359055
Brand: Weil-McLain
$4,933.81
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 90k BTU Gross Input, 77k BTU DOE Capacity, 67k BTU Net IBR Capacity. Includes Circulator.
Item#: 109195
Model#: 381359004
Brand: Weil-McLain
$3,100.00
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 90k BTU Gross Input, 77k BTU DOE Capacity, 67k BTU Net IBR Capacity. Includes Circulator.
Item#: 109197
Model#: 381359036
Brand: Weil-McLain
$3,164.04
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 90k BTU Gross Input, 77k BTU DOE Capacity, 67k BTU Net IBR Capacity. Includes Circulator.
Item#: 109198
Model#: 381359037
Brand: Weil-McLain
$3,164.04
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 90k BTU Gross Input, 77k BTU DOE Capacity, 67k BTU Net IBR Capacity. Includes Circulator.
Item#: 109199
Model#: 381359038
Brand: Weil-McLain
$3,164.04
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 90k BTU Gross Input, 77k BTU DOE Capacity, 67k BTU Net IBR Capacity. Includes Circulator.
Item#: 109200
Model#: 381359039
Brand: Weil-McLain
$3,164.04
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 233k BTU Gross Input, 198k BTU DOE Capacity, 172k BTU Net IBR Capacity. Includes Circulator.
Item#: 109212
Model#: 113081460
Brand: Weil-McLain
$4,367.69
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Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 110K BTU Gross Input, 100K BTU DOE Capacity, 87K BTU Net IBR Capacity. Includes Circulator.
Item#: 123840
Model#: 383900177
Brand: Weil-McLain
$3,389.00
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Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 80K BTU Gross Input, 74K BTU DOE Capacity, 64K BTU Net IBR Capacity. Includes Circulator.
Item#: 124141
Model#: 383900173
Brand: Weil-McLain
$3,732.39
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Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 199K BTU Gross Input, 184K BTU DOE Capacity, 160K BTU Net IBR Capacity. Includes Circulator.
Item#: 124897
Model#: 383900175
Brand: Weil-McLain
$4,487.00
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In-Stock
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 80K BTU Gross Input, 74K BTU DOE Capacity, 64K BTU Net IBR Capacity. Includes Circulator.
Item#: 124898
Model#: 383900176
Brand: Weil-McLain
$3,326.53
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In-Stock
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 150K BTU Gross Input, 139K BTU DOE Capacity, 121K BTU Net IBR Capacity. Includes Circulator.
Item#: 124899
Model#: 383900178
Brand: Weil-McLain
$3,732.39
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In-Stock
Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 199K BTU Gross Input, 184K BTU DOE Capacity, 160K BTU Net IBR Capacity. Includes Circulator.
Item#: 124900
Model#: 383900179
Brand: Weil-McLain
$4,300.09
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In-Stock
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Disassembled. Ratings: 350K BTU Gross Input, 283K BTU DOE Capacity, 212K BTU Net IBR Capacity.
Item#: 163379
Model#: 133044315
Brand: Weil-McLain
$9,225.00
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Disassembled. Ratings: 350K BTU Gross Input, 294K BTU DOE Capacity, 256K BTU Net IBR Capacity.
Item#: 163380
Model#: 133041315
Brand: Weil-McLain
$8,541.00
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*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
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