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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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Model Number 381357804 is the Number 1 Seller
Learn More About 381357804
Model 381357804 is a Recommended Product
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.
16% 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)
$1,818.81
In-Stock
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Model Number 381357806 is the Number 2 Seller
Learn More About 381357806
Model 381357806 is a Recommended Product
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.
10% 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)
$2,034.51
In-Stock
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Model Number 381357800 is the Number 3 Seller
Learn More About 381357800
Model 381357800 is a Recommended Product
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.
9% 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)
$1,512.11
In-Stock
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Model Number 381357832 is the Number 4 Seller
Learn More About 381357832
Model 381357832 is a Recommended Product
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.
8% 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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$1,821.56
Only 3 In-Stock
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Model Number 381357808 is the Number 5 Seller
Learn More About 381357808
Model 381357808 is a Recommended Product
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)
Q&As (2)
$2,328.91
In-Stock
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Learn More About 381357810
Model 381357810 is a Recommended Product
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)
Q&As (3)
$2,583.38
In-Stock
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Learn More About 381357802
Model 381357802 is a Recommended Product
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.
5% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(27)
Q&As (3)
$1,670.52
In-Stock
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Learn More About 381357834
Model 381357834 is a Recommended Product
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.
2% 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 381357836
Model 381357836 is a Recommended Product
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.
2% 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-105-N-T-S2
Model GWA-105-N-T-S2 is a Recommended Product
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.
2% Buy This
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5(15)
Q&As (5)
$1,619.00
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Learn More About GWA-052-N-T-S2
Model GWA-052-N-T-S2 is a Recommended Product
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.
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)
Q&As (5)
$1,389.00
Factory-Direct
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Learn More About 381357828
Model 381357828 is a Recommended Product
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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$1,512.11
Factory-Direct
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Learn More About 381357830
Model 381357830 is a Recommended Product
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
In-Stock
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Learn More About 113081388
Model 113081388 is a Recommended Product
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
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Learn More About GWA-070-L-T-S2
Model GWA-070-L-T-S2 is a Recommended Product
Williamson-Thermoflo GWA-070 - 58K BTU - 83.0% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: GWA-070-L-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.
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)
$1,464.95
Only 1 In-Stock
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Learn More About GWA-105-L-T-S2
Model GWA-105-L-T-S2 is a Recommended Product
Williamson-Thermoflo GWA-105 - 88K BTU - 83.0% AFUE - Hot Water Propane Boiler - Chimney Vent
Model: GWA-105-L-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.
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)
$1,629.95
Factory-Direct
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Learn More About AWR105ENSZ2PSU
Model AWR105ENSZ2PSU is a Recommended Product
Crown Boiler AWR105 - 87K BTU - 83.7% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: AWR105ENSZ2PSU
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 87K BTU DOE Capacity, 76K 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(6)
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$1,799.99
In-Stock
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Learn More About GSA-175-N-IP
Model GSA-175-N-IP is a Recommended Product
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 AWR280ENSZ2PSU
Crown Boiler AWR280 - 234K BTU - 83.3% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: AWR280ENSZ2PSU
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 280K BTU Gross Input, 234K BTU DOE Capacity, 203K 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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$2,899.99
Only 2 In-Stock
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Learn More About CG40ENIT
New Yorker CG40 - 88K BTU - 84.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: CG40ENIT
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.
1% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(4)
Q&A (1)
$1,630.64
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Learn More About GSA-125-N-IP
Williamson-Thermoflo GSA-125 - 78K BTU - 82.9% AFUE - Steam Gas Boiler - Chimney Vent
Model: GSA-125-N-IP
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 125K BTU Gross Input, 104K BTU DOE Capacity, 78K 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(3)
Q&As (2)
$2,199.95
Factory-Direct
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Learn More About 202NI-T2
Burnham 202I - 31K BTU - 82.3% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 202NI-T2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 38K BTU Gross Input, 31K BTU DOE Capacity, 27K 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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$1,709.00
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Learn More About 203NI-T2
Burnham 203I - 52K BTU - 82.6% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 203NI-T2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 62K BTU Gross Input, 52K BTU DOE Capacity, 45K 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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$1,919.00
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Learn More About 205NI-T2
Burnham 205I - 108K BTU - 82.0% AFUE - Hot Water Gas Boiler - Chimney Vent
Model: 205NI-T2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 130K BTU Gross Input, 108K BTU DOE Capacity, 94K BTU Net IBR Capacity. Includes Circulator.
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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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$2,249.00
Factory-Direct
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Free Shipping & Lift Gate
Learn More About Free Freight *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 may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 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

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