80-85% Efficiency Weil-McLain 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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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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Fuel Type Learn More
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
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Product Line
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Price
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Product Width (Inches)
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Minimum Altitude (Feet)
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Maximum Altitude (Feet)
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Flue Connection Size (Inches)
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Gas Connection Size (Inches)
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Supply Connection (Inches)
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Return Connection (Inches)
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Product Weight (Pounds)
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 38k BTU Gross Input, 32k BTU DOE Capacity, 28k BTU Net IBR Capacity. Includes Circulator.
Item#: 109116
Model#: 381359113
Brand: Weil-McLain
$2,285.89
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 67k BTU Gross Input, 56k BTU DOE Capacity, 49k BTU Net IBR Capacity. Includes Circulator.
Item#: 109117
Model#: 381359114
Brand: Weil-McLain
$2,552.93
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 67k BTU Gross Input, 56k BTU DOE Capacity, 49k BTU Net IBR Capacity. Includes Circulator.
Item#: 109118
Model#: 381359115
Brand: Weil-McLain
$2,552.93
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 100k BTU Gross Input, 85k BTU DOE Capacity, 74k BTU Net IBR Capacity. Includes Circulator.
Item#: 109119
Model#: 381359116
Brand: Weil-McLain
$2,793.79
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 100k BTU Gross Input, 85k BTU DOE Capacity, 74k BTU Net IBR Capacity. Includes Circulator.
Item#: 109120
Model#: 381359117
Brand: Weil-McLain
$2,793.79
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 133k BTU Gross Input, 113k BTU DOE Capacity, 98k BTU Net IBR Capacity. Includes Circulator.
Item#: 109121
Model#: 381359118
Brand: Weil-McLain
$3,144.60
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 133k BTU Gross Input, 113k BTU DOE Capacity, 98k BTU Net IBR Capacity. Includes Circulator.
Item#: 109122
Model#: 381359119
Brand: Weil-McLain
$3,144.60
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 166k BTU Gross Input, 141k BTU DOE Capacity, 123k BTU Net IBR Capacity. Includes Circulator.
Item#: 109123
Model#: 381359120
Brand: Weil-McLain
$3,615.09
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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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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 166k BTU Gross Input, 141k BTU DOE Capacity, 123k BTU Net IBR Capacity. Includes Circulator.
Item#: 109124
Model#: 381359121
Brand: Weil-McLain
$3,615.09
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 200k BTU Gross Input, 170k BTU DOE Capacity, 148k BTU Net IBR Capacity. Includes Circulator.
Item#: 109125
Model#: 381359122
Brand: Weil-McLain
$4,019.01
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 200k BTU Gross Input, 170k BTU DOE Capacity, 148k BTU Net IBR Capacity. Includes Circulator.
Item#: 109126
Model#: 381359123
Brand: Weil-McLain
$4,019.01
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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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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 48k BTU Gross Input, 41k BTU DOE Capacity, 36k BTU Net IBR Capacity. Includes Circulator.
Item#: 109135
Model#: 381359000
Brand: Weil-McLain
$2,537.00
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 58k BTU Gross Input, 49k BTU DOE Capacity, 43k BTU Net IBR Capacity. Includes Circulator.
Item#: 109137
Model#: 381359002
Brand: Weil-McLain
$2,828.00
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In-Stock
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 119k BTU Gross Input, 102k BTU DOE Capacity, 89k BTU Net IBR Capacity. Includes Circulator.
Item#: 109139
Model#: 381359006
Brand: Weil-McLain
$3,435.00
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In-Stock
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#: 109141
Model#: 381359008
Brand: Weil-McLain
$3,866.00
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In-Stock
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#: 109143
Model#: 381359010
Brand: Weil-McLain
$4,422.00
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In-Stock
$4,834.00
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 48k BTU Gross Input, 41k BTU DOE Capacity, 36k BTU Net IBR Capacity. Includes Circulator.
Item#: 109147
Model#: 381359028
Brand: Weil-McLain
$2,591.08
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 48k BTU Gross Input, 41k BTU DOE Capacity, 36k BTU Net IBR Capacity. Includes Circulator.
Item#: 109148
Model#: 381359029
Brand: Weil-McLain
$2,591.08
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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 48k BTU Gross Input, 41k BTU DOE Capacity, 36k BTU Net IBR Capacity. Includes Circulator.
Item#: 109149
Model#: 381359030
Brand: Weil-McLain
$2,591.08
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Factory-Direct
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 48k BTU Gross Input, 41k BTU DOE Capacity, 36k BTU Net IBR Capacity. Includes Circulator.
Item#: 109150
Model#: 381359031
Brand: Weil-McLain
$2,591.08
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*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.
Factory-Direct
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 58k BTU Gross Input, 49k BTU DOE Capacity, 43k BTU Net IBR Capacity. Includes Circulator.
Item#: 109151
Model#: 381359032
Brand: Weil-McLain
$2,886.53
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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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Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 58k BTU Gross Input, 49k BTU DOE Capacity, 43k BTU Net IBR Capacity. Includes Circulator.
Item#: 109152
Model#: 381359033
Brand: Weil-McLain
$2,886.53
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*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.
Factory-Direct
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 58k BTU Gross Input, 49k BTU DOE Capacity, 43k BTU Net IBR Capacity. Includes Circulator.
Item#: 109153
Model#: 381359034
Brand: Weil-McLain
$2,886.53
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
Free Lift Gate
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Free Lift Gate
*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.
Factory-Direct