Cast Iron Boilers

Shop by Boiler Feature

Combi Combi
Cast Iron Cast Iron
High Efficiency High Efficiency
Condensing Condensing
Ultra Low NOx Ultra Low NOx

Shop by Fuel Type

Natural Gas Natural Gas
Propane Propane
Electric Electric
Oil Oil
64 Products

  • Leesburg, 741 Miller Drive Suite A-1 & B

  • 6
  • 12
  • 2
  • 2
  • 9
  • 2
  • 3
  • 4
  • 1
  • 3
  • 20
  • There are no matching search results.

  • 106
  • 64
  • 12
  • 15
  • 6
  • 8
  • 4
  • 1
  • 5
  • 3
  • 3
  • 3
  • There are no matching search results.

  • 49
  • 10
  • 2
  • 2
  • 1
  • There are no matching search results.

  • 1
  • 1
  • 2
  • 7
  • 3
  • 4
  • 2
  • 14
  • 3
  • 75
  • 1
  • 2
  • There are no matching search results.

  • 7
  • 8
  • 4
  • 4
  • 3
  • 3
  • 2
  • 2
  • 2
  • 4
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • There are no matching search results.

  • 18
  • 6
  • 11
  • 8
  • 3
  • 4
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • There are no matching search results.

  • 7
  • 3
  • 6
  • 3
  • 2
  • 2
  • 2
  • 4
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • There are no matching search results.

  • 7
  • 9
  • 5
  • 5
  • 3
  • 4
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • There are no matching search results.

  • 6
  • 5
  • 4
  • 4
  • 3
  • 4
  • 4
  • 3
  • 3
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • There are no matching search results.

  • 6
  • 6
  • 6
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 3
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • There are no matching search results.
Need Help?
800-721-2590
Contact us between 8AM-6PM EST, Monday - Friday.
64 Products
Call for Pricing
Call for Pricing
Hot Water Gas Boiler - 85k BTU - 84% AFUE - Chimney Vent
PROSELECT® Force Boilers Force™

Hot Water Gas Boiler - 85k BTU - 84% AFUE - Chimney Vent
Part #FORCE04ENRHG1
Item #7932309
Mfr. Part #FORCE04EN-RHG1
4 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    Available Nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Cast Iron - Gas-Fired Hot Water Boiler - 65 MBH - Cast Iron Heat Exchanger - 91.9% AFUE
Weil-McLain GV90+

Cast Iron - Gas-Fired Hot Water Boiler - 65 MBH - Cast Iron Heat Exchanger - 91.9% AFUE
Part #W382200610
Item #4433944
Mfr. Part #382200610
4.8 out of 5 Customer Rating
Requires Certification

Points
EACH
Your product has been successfully added to the list
Your products have been successfully added to the list
Your product has been successfully added to the new list you created,
Your products have been successfully added to the new list you created,
You've reached more than half the max number of items allowed in a list (>250/500).
Log in or Create an Account to see product availability.
  • Requires Certification

  • Green

Hot Water Oil Boiler - 105 MBH - 87% AFUE - Chimney Vent (Includes tankless DHW heater coil)
PROSELECT® Force Boilers Force™

Hot Water Oil Boiler - 105 MBH - 87% AFUE - Chimney Vent (Includes tankless DHW heater coil)
Part #FORCEVFO3ET
Item #9055119
Mfr. Part #FORCEVFO-3ET
3.7 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Available
    Shipping Not Available
    Not available in VA
  • Requires Certification

  • Green

Steam Gas Boiler - 113 MBH - Cast Iron Heat Exchanger - 82% AFUE
Crown Boiler Bermuda BSI Series

Steam Gas Boiler - 113 MBH - Cast Iron Heat Exchanger - 82% AFUE
Part #CBSI138ENPZZPSU
Item #4310180
Mfr. Part #BSI138ENPZZPSU
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Hot Water Oil Boiler - 115 MBH - 87% AFUE - Chimney Vent (Includes Beckett® Burner)
PROSELECT® Force Boilers Force™

Hot Water Oil Boiler - 115 MBH - 87% AFUE - Chimney Vent (Includes Beckett® Burner)
Part #FORCEOIL115EGBHDR
Item #8090255
Mfr. Part #8017999
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Available
    Shipping Not Available
    Not available in VA
  • Requires Certification

  • Green

Hot Water Oil Boiler with Taco 007e Circulator - 122 MBH - 86.2% AFUE (Burner Sold Separately)
Weil-McLain WTGO™ Series 4

Hot Water Oil Boiler with Taco 007e Circulator - 122 MBH - 86.2% AFUE (Burner Sold Separately)
Part #W386701028
Item #9428878
Mfr. Part #386701028
4.3 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
  • Requires Certification
175 MBH - Cast Iron Natural Gas Boiler - w/ Grundfos® Circulator
U.S. Boiler Company Series 3™

175 MBH - Cast Iron Natural Gas Boiler - w/ Grundfos® Circulator
Part #U306BNIG
Item #7184336
Mfr. Part #306BNI-G
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
84% - 140 MBH - Natural Gas Water Boiler - w/ Grundfos® Circulator
U.S. Boiler Company X-2™

84% - 140 MBH - Natural Gas Water Boiler - w/ Grundfos® Circulator
Part #UX205NGH
Item #8941413
Mfr. Part #X-205N-GH
3.7 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Up to 82.2% - 105 MBH - Natural Gas Cast Iron Steam Boiler
U.S. Boiler Company Independence Series

Up to 82.2% - 105 MBH - Natural Gas Cast Iron Steam Boiler
Part #UIN4PVNIM2
Item #7025180
Mfr. Part #IN4PVNI-M2
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Water/Steam Boiler 210 MBH 210000 BTU Water 87.00% AFUE
PB Heat

Water/Steam Boiler 210 MBH 210000 BTU Water 87.00% AFUE
Part #PWBVE04WPCTL
Item #9363733
Mfr. Part #14459
4.1 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification

  • Green

275k Btu/h Cast Iron Gas Boiler – NG/LP, Atmospheric Vent
Burnham Hydronics

275k Btu/h Cast Iron Gas Boiler – NG/LP, Atmospheric Vent
Part #BK807HENEIL2
Item #10249348
Mfr. Part #K807HENEIL2
4.6 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Residential and Light Commercial Water/Steam Boiler 177 MBH Natural Gas
PB Heat Series 63™

Residential and Light Commercial Water/Steam Boiler 177 MBH Natural Gas
Part #P6304SPRKSPN
Item #7377388
Mfr. Part #63227
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Water/Steam Boiler 140 MBH 140000 BTU Water 86.60% AFUE
PB Heat

Water/Steam Boiler 140 MBH 140000 BTU Water 86.60% AFUE
Part #PECTE04SPL
Item #9363742
Mfr. Part #16403
4.1 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification

  • Green

Residential Oil Boiler 231 MBH
U.S. Boiler Company V8H™ Series

Residential Oil Boiler 231 MBH
Part #UCKV8H5WECLLWFH
Item #9514886
Mfr. Part #CKV8H5WEC-LLWFH
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Available
    Shipping Not Available
    Not available in VA
  • Requires Certification

  • Green

32K BTU - 84% - Cast Iron - Intermittent Pilot with Damper - Natural Gas - Hot Water Boiler
Weil-McLain CGa™

32K BTU - 84% - Cast Iron - Intermittent Pilot with Damper - Natural Gas - Hot Water Boiler
Part #W381359070
Item #8325594
Mfr. Part #381359070
3.3 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Oil Burning Water Boiler - 171 MBH - 86.2% AFUE
Buderus Hydronic Systems Buderus

Oil Burning Water Boiler - 171 MBH - 86.2% AFUE
Part #B121504
Item #1641654
Mfr. Part #7738000112
3.4 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
80.1% AFUE - 410 MBH - Cast Iron Gas-Fired Commercial Water Boiler - Atmospheric Vent
Burnham Hydronics

80.1% AFUE - 410 MBH - Cast Iron Gas-Fired Commercial Water Boiler - Atmospheric Vent
Part #BK808HENEIL2
Item #10249349
Mfr. Part #K808HENEIL2
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
399 MBH 320000 BTU/h Gas Boiler Natural Draft Vent
Peerless® Series GM™

399 MBH 320000 BTU/h Gas Boiler Natural Draft Vent
Part #PGM08SPRKWPN
Item #9616570
Mfr. Part #05841
4.1 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
1,000,000 BTU Water Heater with Pump
Laars Mighty Therm2®

1,000,000 BTU Water Heater with Pump
Part #LMT2V1000NACK1PXN
Item #4382935
Mfr. Part #MT2V1000NACK1PXN
4.1 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
Cast Iron - Hot Water Oil Boiler with Taco 007 Circulator - 171 MBH - 86.1% AFUE (Burner Sold Separately)
Weil-McLain WGO™ Series 4

Cast Iron - Hot Water Oil Boiler with Taco 007 Circulator - 171 MBH - 86.1% AFUE (Burner Sold Separately)
Part #W386701016
Item #9428902
Mfr. Part #386701016
4.1 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
  • Requires Certification

  • Green

105 MBH - Cast Iron Gas-Fired Hot Water Boiler - Electronic Ignition
Crown Boiler Aruba 5 Series

105 MBH - Cast Iron Gas-Fired Hot Water Boiler - Electronic Ignition
Part #CAWR105BNZ3AU1
Item #10357463
Mfr. Part #AWR105BNZ3AU1
5 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
70 MBH - Cast Iron Gas-Fired Hot Water Boiler - Electronic Ignition
Crown Boiler Aruba 5 Series

70 MBH - Cast Iron Gas-Fired Hot Water Boiler - Electronic Ignition
Part #CAWR070BNZ3AU1
Item #10357462
Mfr. Part #AWR070BNZ3AU1
4.3 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification
84% - 69 MBH - Natural Gas Cast Iron Water Boiler - w/ Grundfos® Circulator
U.S. Boiler Company Series 2™

84% - 69 MBH - Natural Gas Cast Iron Water Boiler - w/ Grundfos® Circulator
Part #U203ENG0
Item #8155536
Mfr. Part #203EN-G0
4 out of 5 Customer Rating
Requires Certification

Points
EACH
Log in or Create an Account to see product availability.
How to get it:
  • Pick Up
    0  Available
    0 nearby
    Pick Up  Not Available
    Not available in VA
  • Shipping
    Not Available
    Shipping Not Available
    Not available in VA
  • Requires Certification