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Chimney Vent Gas Boilers

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Chimney vent gas boilers are one of the most popular boiler options, using your home's existing chimney to expel combustion gasses. Shop our wide selection of chimney vent gas boilers today.
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Learn More About 358001000-SD
Dunkirk PSB - 262,500 BTU - Steam Boiler - NG - 82% AFUE - Chimney Vented - 0 to 2,000 Ft. Altitude (Scratch & Dent)
Model: 358001000-SD
Dunkirk - PSB-8D - 262,500 BTU - Gas-Fired Steam Boiler - Natural Gas - 82% AFUE - Chimney Vented - 0 to 2,000 Feet Altitude - Packaged - MPN: 358001000
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 Scratch & Dent
$2,600.00
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$4,360.95
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Only 2 In-Stock
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Learn More About 381357804
Weil-McLain CGa-4-PIDN - 88K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 381357804
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 88K BTU DOE Capacity, 77K BTU Net IBR Capacity. Includes Circulator.
22% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(26)
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$1,760.00
In-Stock
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Learn More About 381357806
Weil-McLain CGa-5-PIDN - 117K BTU - 83.5% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 381357806
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 117K BTU DOE Capacity, 102K BTU Net IBR Capacity. Includes Circulator.
14% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(30)
Q&As (3)
$1,970.00
In-Stock
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Learn More About 381357808
Weil-McLain CGa-6-PIDN - 146K BTU - 83.2% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 381357808
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 146K BTU DOE Capacity, 127K BTU Net IBR Capacity. Includes Circulator.
7% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(26)
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$2,268.95
In-Stock
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Learn More About 381357810
Weil-McLain CGa-7-PIDN - 175K BTU - 83.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 381357810
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 210K BTU Gross Input, 175K BTU DOE Capacity, 152K BTU Net IBR Capacity. Includes Circulator.
5% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(28)
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$2,529.00
In-Stock
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Learn More About 381357802
Weil-McLain CGa-3-PIDN - 59K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 381357802
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 70K BTU Gross Input, 59K BTU DOE Capacity, 51K BTU Net IBR Capacity. Includes Circulator.
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(27)
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$1,652.00
In-Stock
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Learn More About 381357800
Weil-McLain CGa-25-PIDN - 44K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 381357800
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 52K BTU Gross Input, 44K BTU DOE Capacity, 38K BTU Net IBR Capacity. Includes Circulator.
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(26)
Q&As (3)
$1,497.00
In-Stock
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Learn More About 381357832
Weil-McLain CGa-4-PIDL - 88K BTU - 84.0% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: 381357832
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 88K BTU DOE Capacity, 77K BTU Net IBR Capacity. Includes Circulator.
4% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(22)
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$1,791.00
Only 3 In-Stock
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Learn More About GWA-105-N-T-S2
Williamson-Thermoflo GWA-105 - 88K BTU - 83.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: GWA-105-N-T-S2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 88K BTU DOE Capacity, 77K BTU Net IBR Capacity. Includes Circulator.
4% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(15)
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$1,619.00
Only 2 In-Stock
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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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Learn More About GWA-052-N-T-S2
Williamson-Thermoflo GWA-052 - 43K BTU - 83.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: GWA-052-N-T-S2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 52K BTU Gross Input, 43K BTU DOE Capacity, 37K BTU Net IBR Capacity. Includes Circulator.
3% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(14)
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$1,389.00
Factory-Direct
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2% Check Discount
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Learn More About GWA-070-N-T-S2
Williamson-Thermoflo GWA-070 - 58K BTU - 83.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: GWA-070-N-T-S2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 70K BTU Gross Input, 58K BTU DOE Capacity, 50K BTU Net IBR Capacity. Includes Circulator.
2% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(14)
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$1,449.00
Factory-Direct
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2% Check Discount
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Learn More About 381357834
Weil-McLain CGa-5-PIDL - 117K BTU - 83.5% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: 381357834
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 117K BTU DOE Capacity, 102K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(23)
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$2,148.00
In-Stock
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Learn More About 381357830
Weil-McLain CGa-3-PIDL - 59K BTU - 84.0% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: 381357830
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 70K BTU Gross Input, 59K BTU DOE Capacity, 51K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(22)
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$1,748.00
Only 5 In-Stock
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Learn More About 381357836
Weil-McLain CGa-6-PIDL - 146K BTU - 83.2% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: 381357836
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 146K BTU DOE Capacity, 127K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(22)
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$2,468.00
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Learn More About GWA-140-L-T-S2
Williamson-Thermoflo GWA-140 - 117K BTU - 82.5% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: GWA-140-L-T-S2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 117K BTU DOE Capacity, 102K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(13)
Q&As (5)
$1,809.95
Factory-Direct
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2% Check Discount
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Learn More About GSA-175-N-IP
Williamson-Thermoflo GSA-175 - 109K BTU - 82.8% AFUE - Steam Gas Boiler - Chimney Vent
Model: GSA-175-N-IP
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 145K BTU DOE Capacity, 109K BTU Net IBR Capacity.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(5)
Q&As (2)
$2,619.95
Factory-Direct
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Learn More About CGS40CNIH
New Yorker CGS40C - 63K BTU - 82.0% AFUE - Steam Gas Boiler - Chimney Vent
Model: CGS40CNIH
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 103K BTU Gross Input, 84K BTU DOE Capacity, 63K BTU Net IBR Capacity.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(4)
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$2,016.93
Factory-Direct
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Learn More About CGS50CNIH
New Yorker CGS50C - 85K BTU - 82.0% AFUE - Steam Gas Boiler - Chimney Vent
Model: CGS50CNIH
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 138K BTU Gross Input, 113K BTU DOE Capacity, 85K BTU Net IBR Capacity.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(4)
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$2,228.42
Factory-Direct
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2% Check Discount
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Learn More About 204NI-T2
Burnham 204I - 80K BTU - 82.3% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 204NI-T2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 96K BTU Gross Input, 80K BTU DOE Capacity, 70K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
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$2,059.00
Factory-Direct
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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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Learn More About G234X/64
Buderus G234X/64 - 219K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: G234X/64
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 226K BTU Gross Input, 219K BTU DOE Capacity, 190K BTU Net IBR Capacity.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
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$3,599.00
Factory-Direct
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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.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
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Learn More About 7738003479
Buderus GC144/5 - 112K BTU - 85.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 7738003479
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 133K BTU Gross Input, 112K BTU DOE Capacity, 97K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
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$2,425.00
Factory-Direct
Free Shipping & Lift Gate
? *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.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About 381357828
Weil-McLain CGa-25-PIDL - 44K BTU - 84.0% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: 381357828
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 52K BTU Gross Input, 44K BTU DOE Capacity, 38K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(22)
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$1,497.00
Factory-Direct
Free Shipping & Lift Gate
? *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.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
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Learn More About 113081388
Weil-McLain CGa-8-PIDN - 204K BTU - 82.7% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 113081388
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 245K BTU Gross Input, 204K BTU DOE Capacity, 177K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
4.9 out of 54.9 out of 54.9 out of 54.9 out of 54.9 out of 5(15)
Q&A (1)
$3,082.91
In-Stock
Free Shipping & Lift Gate
? *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.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
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Learn More About GWA-140-N-T-S2
Williamson-Thermoflo GWA-140 - 117K BTU - 82.5% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: GWA-140-N-T-S2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 117K BTU DOE Capacity, 102K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(14)
Q&As (5)
$1,815.00
Only 1 In-Stock
Free Shipping & Lift Gate
? *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.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
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