Cast Iron Boilers

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Cast iron boilers are a popular choice for both hot water and steam heating applications. We carry a wide selection of cast iron boilers from the top brands, so you can be sure to find one for your needs.
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Model Number 381359074 is the Number 1 Seller
Learn More About Weil-McLain 381359074
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.
10% Buy This
$2,097.00
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Model Number 382200611 is the Number 2 Seller
Learn More About Weil-McLain 382200611
Floor Mounted, Cast Iron Condensing Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 97K BTU DOE Capacity, 84K BTU Net IBR Capacity. Includes Circulator.
6% Buy This
$3,458.00
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Model Number KIN4LPI-LE2 is the Number 3 Seller
Learn More About Burnham KIN4LPI-LE2
Model KIN4LPI-LE2 is a Recommended Product
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Disassembled. Ratings: 105K BTU Gross Input, 87K BTU DOE Capacity, 65K BTU Net IBR Capacity.
5% Buy This
$2,543.00
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Model Number 381359078 is the Number 4 Seller
Learn More About Weil-McLain 381359078
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.
5% Buy This
$2,713.00
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Model Number 381359076 is the Number 5 Seller
Learn More About Weil-McLain 381359076
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.
5% Buy This
$2,359.00
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Learn More About Buderus G115WS/4
Model G115WS/4 is a Recommended Product
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.90 GPH Gross Input, 109K BTU DOE Capacity, 95K BTU Net IBR Capacity.
4% Buy This
$1,849.00
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Learn More About Weil-McLain 386700829
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.20 GPH Gross Input, 145K BTU DOE Capacity, 126K BTU Net IBR Capacity. Includes Circulator.
3% Buy This
$2,754.00
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Learn More About Weil-McLain 386700832
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.95 GPH Gross Input, 115K BTU DOE Capacity, 100K BTU Net IBR Capacity. Includes Circulator.
3% Buy This
$2,663.00
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Learn More About Crown Boiler Co. BSI241ENPZZPSU
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 241K BTU Gross Input, 199K BTU DOE Capacity, 149K BTU Net IBR Capacity.
3% Buy This
$3,587.00
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Learn More About Crown Boiler Co. AWR070BNST3PSU
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 Taco Circulator.
3% Buy This
$1,935.00
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Learn More About Weil-McLain 381359022
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.
3% Buy This
$3,004.00
Only 1 In-Stock
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Learn More About Burnham MPO-IQ115-TB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.82 GPH Gross Input, 101K BTU DOE Capacity, 88K BTU Net IBR Capacity. Includes Circulator.
3% Buy This
$2,844.00
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Learn More About Burnham 204EN-G0
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Grundfos Circulator and LWCO. Ratings: 103K BTU Gross Input, 87K BTU DOE Capacity, 76K BTU Net IBR Capacity.
3% Buy This
$2,370.00
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Learn More About Weil-McLain 113081460
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.
3% Buy This
$3,139.99
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Learn More About Burnham X-205P-TH
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Included Taco Circulator and LWCO. Ratings: 140K BTU Gross Input, 117K BTU DOE Capacity, 102K BTU Net IBR Capacity.
3% Buy This
$2,151.00
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Learn More About Weil-McLain 382200612
Floor Mounted, Cast Iron Condensing Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 140K BTU Gross Input, 130K BTU DOE Capacity, 113K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
$3,987.00
Only 4 In-Stock
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Learn More About Crown Boiler Co. BSI276ENPZZPSU
Model BSI276ENPZZPSU is a Recommended Product
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 276K BTU Gross Input, 229K BTU DOE Capacity, 172K BTU Net IBR Capacity.
1% Buy This
$3,824.00
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Learn More About Burnham PIN4SNI-ME2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 105K BTU Gross Input, 87K BTU DOE Capacity, 65K BTU Net IBR Capacity.
1% Buy This
$3,071.00
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Learn More About Burnham PIN6SNI-ME2
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 175K BTU Gross Input, 144K BTU DOE Capacity, 108K BTU Net IBR Capacity.
1% Buy This
$3,942.00
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Learn More About Buderus 7738003477
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 74K BTU Gross Input, 62K BTU DOE Capacity, 54K BTU Net IBR Capacity. Includes Circulator.
1% Buy This
$1,999.00
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Learn More About Crown Boiler Co. AWR140BNST3PSU
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 Taco Circulator.
1% Buy This
$2,248.00
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Learn More About Crown Boiler Co. AWR210BLST3PSU
Floor Mounted, Cast Iron Boiler with Single Stage Gas Valve. Ships Packaged. Ratings: 210K BTU Gross Input, 176K BTU DOE Capacity, 153K BTU Net IBR Capacity. Includes Taco Circulator.
1% Buy This
$2,861.00
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Learn More About Crown Boiler Co. AWR105BNST3PSU
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 Taco Circulator.
1% Buy This
$2,059.00
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Learn More About Crown Boiler Co. AWR105BLST3P8U
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 Taco Circulator.
1% Buy This
$2,059.00
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