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Find the perfect cast iron oil boiler for your needs. We offer a wide selection cast iron oil boilers from the top brands, in a variety of sizes and options. Shop today.
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Model Number CL3-091-PSL-MBSN is a Hot Seller
Learn More About CL3-091-PSL-MBSN
New Yorker CL3-091 - 56K BTU - 84.1% AFUE - Steam Oil Boiler - Chimney Vent
Model: CL3-091-PSL-MBSN
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.65 GPH Gross Input, 78K BTU DOE Capacity, 56K BTU Net IBR Capacity.
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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Model CL3-091-PSL-MBSN is a Closeout
Closeout
$2,297.00
Was 
$2,397.00
SAVE $100.00
Only 2 In-Stock
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Model Number 386700830 is the Number 1 Seller
Learn More About 386700830
Weil-McLain P-WGO-5 - 175K BTU - 85.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700830
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.45 GPH Gross Input, 175K BTU DOE Capacity, 152K BTU Net IBR Capacity. Includes Circulator.
23% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(4)
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$2,837.10
Only 4 In-Stock
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Model Number 386700828 is the Number 2 Seller
Learn More About 386700828
Weil-McLain P-WGO-3 - 115K BTU - 85.3% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700828
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.95 GPH Gross Input, 115K BTU DOE Capacity, 100K BTU Net IBR Capacity. Includes Circulator.
15% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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$2,141.50
In-Stock
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Model Number 386700832 is the Number 3 Seller
Learn More About 386700832
Weil-McLain P-WTGO-3 - 115K BTU - 85.3% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 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.
8% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(5)
Q&A (1)
$2,366.60
In-Stock
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Model Number 386700833 is the Number 4 Seller
Learn More About 386700833
Weil-McLain P-WTGO-4 - 145K BTU - 85.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700833
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.20 GPH Gross Input, 145K BTU DOE Capacity, 126K BTU Net IBR Capacity. Includes Circulator.
8% Buy This
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(5)
Q&A (1)
$2,716.00
Only 2 In-Stock
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Model Number CL4-126-WT-TBB is the Number 5 Seller
Learn More About CL4-126-WT-TBB
New Yorker CL4-126 - 111K BTU - 86.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Incl Tankless Coil
Model: CL4-126-WT-TBB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.90 GPH Gross Input, 111K BTU DOE Capacity, 97K 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(3)
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$3,027.71
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Learn More About 386700819
Weil-McLain P-SGO-3 - 85K BTU - 83.8% AFUE - Steam Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700819
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.95 GPH Gross Input, 114K BTU DOE Capacity, 85K BTU Net IBR Capacity.
8% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (1)
$2,248.47
Only 2 In-Stock
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Learn More About CI-HGS-129B-LL
New Yorker CI-HGS-129B - 129K BTU - 87.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: CI-HGS-129B-LL
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.05 GPH Gross Input, 129K BTU DOE Capacity, 112K BTU Net IBR Capacity.
8% 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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$1,969.00
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Learn More About OWB-6-T-S2-W-W
Williamson-Thermoflo OWB-6 - 212K BTU - 85.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: OWB-6-T-S2-W-W
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.75 GPH Gross Input, 212K BTU DOE Capacity, 184K BTU Net IBR Capacity. Includes Circulator.
8% Buy This
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$2,747.95
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Learn More About MPO-IQ115-TB
Burnham MPO-IQ115 - 101K BTU - 87.0% AFUE - Hot Water Oil Boiler - Chimney Vent
Model: 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.
8% Buy This
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$2,449.00
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Learn More About MST396SL-HB
Burnham MST396 - 95K BTU - 86.0% AFUE - Steam Oil Boiler - Chimney Vent
Model: MST396SL-HB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.05 GPH Gross Input, 127K BTU DOE Capacity, 95K BTU Net IBR Capacity.
8% Buy This
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Q&As (2)
$3,010.00
Factory-Direct
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Learn More About 386700834
Weil-McLain P-WTGO-5 - 175K BTU - 85.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700834
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.45 GPH Gross Input, 175K BTU DOE Capacity, 152K BTU Net IBR Capacity. Includes Circulator.
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(5)
Q&A (1)
$3,078.49
Only 3 In-Stock
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Learn More About 386700835
Weil-McLain P-WTGO-6 - 212K BTU - 85.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700835
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.75 GPH Gross Input, 212K BTU DOE Capacity, 184K BTU Net IBR Capacity. Includes Circulator.
4.8 out of 54.8 out of 54.8 out of 54.8 out of 54.8 out of 5(5)
Q&A (1)
$3,384.75
Only 1 In-Stock
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Learn More About 386700827
Weil-McLain P-WGO-2 - 86K BTU - 86.4% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700827
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.70 GPH Gross Input, 86K BTU DOE Capacity, 75K BTU Net IBR Capacity. Includes Circulator.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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$1,769.79
Only 4 In-Stock
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Learn More About 386700829
Weil-McLain P-WGO-4 - 145K BTU - 85.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 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.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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$2,471.90
In-Stock
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Learn More About CL3-091-PST-MBSR
New Yorker CL3-091 - 56K BTU - 84.1% AFUE - Steam Oil Boiler - Chimney Vent - Includes Tankless Coil
Model: CL3-091-PST-MBSR
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.65 GPH Gross Input, 78K BTU DOE Capacity, 56K BTU Net IBR Capacity.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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Model CL3-091-PST-MBSR is a Closeout
Closeout
$2,649.00
Was 
$2,749.00
SAVE $100.00
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Learn More About CL4-126-ST-MBB
New Yorker CL4-126 - 81K BTU - 84.1% AFUE - Steam Oil Boiler - Chimney Vent - Includes Tankless Coil
Model: CL4-126-ST-MBB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.90 GPH Gross Input, 108K BTU DOE Capacity, 81K BTU Net IBR Capacity.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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$3,181.90
Factory-Direct
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Learn More About G215/4
Model G215/4 is a Recommended Product
Buderus G215/4 - 171K BTU - 86.2% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model: G215/4
Floor Mounted, Cast Iron Boiler. Ships Disassembled. Ratings: 1.40 GPH Gross Input, 171K BTU DOE Capacity, 149K BTU Net IBR Capacity.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(3)
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$2,399.00
Only 1 In-Stock
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Learn More About 386700820
Weil-McLain P-SGO-4 - 108K BTU - 84.0% AFUE - Steam Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700820
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.20 GPH Gross Input, 144K BTU DOE Capacity, 108K BTU Net IBR Capacity.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (1)
$2,600.09
In-Stock
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Learn More About 386700822
Weil-McLain P-SGO-6 - 158K BTU - 83.7% AFUE - Steam Oil Boiler - Chimney Vent - Burner Sold Separately
Model: 386700822
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.75 GPH Gross Input, 210K BTU DOE Capacity, 158K BTU Net IBR Capacity.
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(2)
Q&A (1)
$3,223.98
Only 3 In-Stock
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Learn More About CL3-105-PSL-MBSN
New Yorker CL3-105 - 68K BTU - 83.8% AFUE - Steam Oil Boiler - Chimney Vent
Model: CL3-105-PSL-MBSN
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.75 GPH Gross Input, 90K BTU DOE Capacity, 68K BTU Net IBR Capacity.
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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Model CL3-105-PSL-MBSN is a Closeout
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$2,297.00
Was 
$2,397.00
SAVE $100.00
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Learn More About CL4-126-SN-MBB
New Yorker CL4-126 - 81K BTU - 84.1% AFUE - Steam Oil Boiler - Chimney Vent
Model: CL4-126-SN-MBB
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.90 GPH Gross Input, 108K BTU DOE Capacity, 81K BTU Net IBR Capacity.
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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$2,837.73
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Learn More About FWZ080BOLT1SSU
Model FWZ080BOLT1SSU is a Recommended Product
Crown Boiler FWZ080 - 97K BTU - 86.3% AFUE - Hot Water Oil Boiler - Chimney Vent
Model: FWZ080BOLT1SSU
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 0.80 GPH Gross Input, 97K BTU DOE Capacity, 84K BTU Net IBR Capacity. Includes Circulator.
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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$2,820.00
Factory-Direct
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Learn More About FWZ160BOLT1SSU
Model FWZ160BOLT1SSU is a Recommended Product
Crown Boiler FWZ160 - 197K BTU - 87.0% AFUE - Hot Water Oil Boiler - Chimney Vent
Model: FWZ160BOLT1SSU
Floor Mounted, Cast Iron Boiler. Ships Packaged. Ratings: 1.60 GPH Gross Input, 197K BTU DOE Capacity, 171K BTU Net IBR Capacity. Includes Circulator.
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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$3,750.00
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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.
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