Please ensure Javascript is enabled for purposes of website accessibility
  • Sign In
  • Create an Account

Need Help?   Email:

Toggle Nav
Cart Icon Cart
Search
We ship to most places in continental USA
Chat with us
Need help
Our Locations

Boilers

Steam X

Mbtu

Fuel Type

Medium

Brands



Items 73-108 of 198

Set Descending Direction

  1. Green Mountain GMGS Series
    Gas, Steam
    Cast Iron Heat Exchanger
    Chimney Vent
    82.00% Efficiency
    Green Mountain 16B722503100204 GMGS 225 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent
    Retail : $5,661.00 $3,645.68
    You Save (36%)

    • Green Mountain 16B307503100204 GMGS 75 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent

    • Green Mountain 16B411203100204 GMGS 112 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent

    • Green Mountain 16B515003100204 GMGS 150 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent

    • Green Mountain 16B618703100204 GMGS 187 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent

    • Green Mountain 16B722503100204 GMGS 225 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent

    • Green Mountain 16B826203100204 GMGS 262 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent

    • Green Mountain 16B929903100204 GMGS 299 Input MBtu - 82% AFUE Natural Gas Steam Boiler - Chimney Vent

  2. Weil-McLain EGH Series 5 Gas Boilers (No Coil Opening)
    Gas, Steam
    Cast Iron Heat Exchanger
    Chimney Vent
    82% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/w/i/withcoil_opening_3.png
    Without Coil Opening
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/k/n/knockdown_1.png
    Knockdown(Assembly required)
    Weil-Mclain 117124351 EGH-125PIN Input 495 MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim, No Tankless Coil Opening (Knockdown-Assembly Required)
    Retail : $13,469.00 $12,122.10
    You Save (10%)

    • Weil-Mclain 117084351 EGH-85PIN Input 315 MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim, No Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117094351 EGH-95PIN Input 360 MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim, No Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117104351 EGH-105PIN Input 405 MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim, No Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117114351 EGH-115PIN Input 450 MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim, No Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117124351 EGH-125PIN Input 495 MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim, No Tankless Coil Opening (Knockdown-Assembly Required)

  3. Weil-McLain EGH Series 5 Gas Boilers (with Coil Opening)
    Gas, Steam
    Cast Iron Heat Exchanger
    82% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/w/i/withoutcoil_opening_3.png
    With Coil Opening
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/k/n/knockdown_1.png
    Knockdown(Assembly required)
    Weil-Mclain 117095351 EGH-95PIN 360 Input MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim and Tankless Coil Opening (Knockdown-Assembly Required)
    Retail : $12,139.00 $10,925.10
    You Save (10%)

    • Weil-Mclain 117085351 EGH-85PIN 315 Input MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim and Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117095351 EGH-95PIN 360 Input MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim and Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117105351 EGH-105PIN 405 Input MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim and Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117115351 EGH-115PIN 450 Input MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim and Tankless Coil Opening (Knockdown-Assembly Required)

    • Weil-Mclain 117125351 EGH-125PIN 495 Input MBtu, 82% AFUE, Natural Gas, Steam Boiler with PS802 Steam Trim and Tankless Coil Opening (Knockdown-Assembly Required)

  4. Peerless SC Series
    Gas, Steam
    Forced Draft
    83% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/w/i/withoutburner.png
    Without Burner
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/k/n/knockdown_1.png
    Knockdown(Assembly required)
    Peerless SCT-08 Series SC 649 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)
    Retail : $11,738.00 $9,390.40
    You Save (20%)

    • Peerless 4005000 Series SC 404 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft ASSEMBLY REQUIRED, LESS BURNER

    • Peerless SCT-06 Series SC 505 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

    • Peerless SCT-07 Series SC 577 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

    • Peerless SCT-08 Series SC 649 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

    • Peerless 4009000 Series SC 722 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft - Knockdown

    • Peerless SCT-10 Series SC 794 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

  6. Peerless Steam Boilers Series 64
    Gas, Steam
    Chimney Vent
    83% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/w/i/withburner.png
    With Burner
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/k/n/knockdown_1.png
    Knockdown(Assembly required)
    Peerless 6410006 Series 64 517 Input MBtu - 81% AFUE Semi-Commercial Hydrolevel CG450 probe type Low Water Cut Off Natural Gas Steam Boiler - Chimney Vent (Knockdown)
    Retail : $11,923.00 $8,942.25
    You Save (25%)

    • Peerless 64-07 Series 64 345 Input MBtu - 81% AFUE Semi-Commercial Natural Gas Steam Boiler - Chimney Vent (Knockdown)

    • Peerless 64-08 Series 64 399 Input MBtu - 81% AFUE Semi-Commercial Natural Gas Steam Boiler - Chimney Vent (Knockdown)

    • Peerless 64-09 Series 64 460 Input MBtu - 81% AFUE Semi-Commercial Natural Gas Steam Boiler - Chimney Vent (Knockdown)

    • Peerless 6410006 Series 64 517 Input MBtu - 81% AFUE Semi-Commercial Hydrolevel CG450 probe type Low Water Cut Off Natural Gas Steam Boiler - Chimney Vent (Knockdown)

    • Peerless 6411004 64 Series 575 Input MBtu - 81% AFUE Semi-Commercial Hydrolevel CG450 probe type Low Water Cut Off Natural Gas Steam Boiler - Chimney Vent (Knockdown)

    • Peerless 6412006 Series 64 632 Input MBtu - 81% AFUE Semi-Commercial Hydrolevel CG450 probe type Low Water Cut Off Natural Gas Steam Boiler - Chimney Vent (Knockdown)

  7. Williamson GSA Series 2 Steam Boilers
    Gas, Steam
    Chimney Vent
    82% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/a/packaged_1_1.png
    Packaged
    Williamson GSA-200-N-IP-S2-W GSA Series 2 High Efficiency 200,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood
    Retail : $6,394.00 $3,964.28
    You Save (38%)

    • Williamson GSA-075-N-IP-S2-W GSA Series 2 High Efficiency 75,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-100-N-IP-S2-W GSA Series 2 High Efficiency 100,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-125-N-IP-S2-W GSA Series 2 High Efficiency 125,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-150-N-IP-S2-W GSA Series 2 High Efficiency 150,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-175-N-IP-S2-W GSA Series 2 High Efficiency 175,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam BoilerInput Natural Gas, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-200-N-IP-S2-W GSA Series 2 High Efficiency 200,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-238-N-IP-S2-W GSA Series 2 High Efficiency 238,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO

    • Williamson GSA-282-N-IP-S2-W GSA Series 2 High Efficiency 282,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO

  8. Williamson GSA Gas Steam Boilers
    Gas, Steam
    Chimney Vent
    82% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/a/packaged_1_1.png
    Packaged
    Williamson GSA-100-N-IP-S2-W GSA Series 2 High Efficiency 100,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood
    Retail : $4,624.00 $2,866.88
    You Save (38%)

    • Williamson GSA-075-N-IP-S2-W GSA Series 2 High Efficiency 75,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-100-N-IP-S2-W GSA Series 2 High Efficiency 100,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-125-N-IP-S2-W GSA Series 2 High Efficiency 125,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-150-N-IP-S2-W GSA Series 2 High Efficiency 150,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-175-N-IP-S2-W GSA Series 2 High Efficiency 175,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam BoilerInput Natural Gas, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-200-N-IP-S2-W GSA Series 2 High Efficiency 200,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO Includes Damper and Draft Hood

    • Williamson GSA-238-N-IP-S2-W GSA Series 2 High Efficiency 238,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO

    • Williamson GSA-282-N-IP-S2-W GSA Series 2 High Efficiency 282,000 BTU 82% AFUE Natural Gas Atmospheric Vent Steam Boiler, Intermittent Pilot, Probe LWCO

  9. Williamson OSB Series 3 Steam Boilers
    Oil-Fired, Steam
    Cast Iron Heat Exchanger
    Chimney Vent
    85% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/w/i/withoutburner.png
    Without Burner
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/a/packaged_1_1.png
    Packaged
    Williamson OSB-4-P-S3-W OSB Series 3 144,000 BTU 85% AFUE Oil-Fired Chimney Vent Steam Boiler, Probe LWCO, 4 Section (Burner and Tankless Coil Sold Separately)
    Retail : $4,470.00 $3,095.47
    You Save (31%)

    • Williamson OSB-3-P-S3-W OSB Series 3 114,000 BTU 85% AFUE Oil-Fired Chimney Vent Steam Boiler, Probe LWCO, 3 Section (Burner and Tankless Coil Sold Separately)

    • Williamson OSB-4-P-S3-W OSB Series 3 144,000 BTU 85% AFUE Oil-Fired Chimney Vent Steam Boiler, Probe LWCO, 4 Section (Burner and Tankless Coil Sold Separately)

    • Williamson OSB-5-P-S3-W OSB Series 3 174,000 BTU 85% AFUE Oil-Fired Chimney Vent Steam Boiler, Probe LWCO, 5 Section (Burner and Tankless Coil Sold Separately)

    • Williamson OSB-6-P-S3-W OSB Series 3 210,000 BTU 85% AFUE Oil-Fired Chimney Vent Steam Boiler, Probe LWCO, 6 Section (Burner and Tankless Coil Sold Separately)

  11. Burnham Independence Series Knockdown Boilers
    Gas, Steam
    Cast Iron Heat Exchanger
    Chimney Vent
    82% Efficiency
    Knockdown
    Burnham KIN7LNI-LE2, Independence, 210 Input MBtu, 82.1% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.,(Knockdown)(Trim Purchased Separately - sku 11114601)
    Retail : $6,209.00 $4,718.84
    You Save (24%)

    • Burnham KIN4LNI-LE2, Independence, 105 Input MBtu, 82% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.,(Knockdown)(Trim Purchased Separately - sku 11114601)

    • Burnham KIN5LNI-LE2, Independence, 140 Input MBtu, 82% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.,(Knockdown)(Trim Purchased Separately - sku 11114601)

    • Burnham KIN7LNI-LE2, Independence, 210 Input MBtu, 82.1% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.,(Knockdown)(Trim Purchased Separately - sku 11114601)

    • Burnham KIN8LNI-LE2, Independence, 245 Input MBtu, 82.2% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.,(Knockdown)(Trim Purchased Separately - sku 11114601)

    • Burnham KIN9LNI-LE2, Independence, 280 Input MBtu, 82.2% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.,(Knockdown)(Trim Purchased Separately - sku 11114601)

  12. Burnham Independence Series SemiPackage Boilers
    Gas, Steam
    Cast Iron Heat Exchanger
    Chimney Vent
    82% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/s/e/semi_packaged.png
    Semi Packaged
    Burnham SIN4LNI-LE2, Independence, 105 Input MBtu, 82% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged)(Trim Purchased Separately - sku 11114601)
    Retail : $4,081.00 $3,101.56
    You Save (24%)

    • Burnham SIN3LNI-LE2, Independence, 62 Input MBtu, 82% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged)(Trim Purchased Separately - sku 11114601)

    • Burnham SIN4LNI-LE2, Independence, 105 Input MBtu, 82% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged)(Trim Purchased Separately - sku 11114601)

    • Burnham SIN5LNI-LE2, Independence, 140 Input MBtu, 82% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged, Trim Sold Separately)

    • Burnham SIN6LNI-LE2, Independence, 175 Input MBtu, 82.1% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged)(Trim Purchased Separately - sku 11114601)

    • Burnham SIN7LNI-LE2, Independence, 210 Input MBtu, 82.1% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged)(Trim Purchased Separately - sku 11114601)

    • Burnham SIN8LNI-LE2, Independence, 245 Input MBtu, 82.2% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged)(Trim Purchased Separately - sku 11114601)

    • Burnham SIN9LNI-LE2, Independence, 280 Input MBtu, 82.2% AFUE, Electronic Ignition, Natural Gas Steam Boiler, Chimney Vent with Damper, Sea level-2,000 ft.(Semi Packaged)(Trim Purchased Separately - sku 11114601)

  13. Peerless Boilers Series SC
    Gas, Steam
    Forced Draft
    83% Efficiency
    Peerless 4009000 Series SC 722 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft - Knockdown
    Retail : $13,024.00 $10,419.20
    You Save (20%)

    • Peerless 4005000 Series SC 404 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft ASSEMBLY REQUIRED, LESS BURNER

    • Peerless SCT-06 Series SC 505 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

    • Peerless SCT-07 Series SC 577 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

    • Peerless SCT-08 Series SC 649 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

    • Peerless 4009000 Series SC 722 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft - Knockdown

    • Peerless SCT-10 Series SC 794 Input MBtu - 83% AFUE Semi-Commercial Natural Gas Steam Boiler - Forced Draft (KNOCKDOWN UNIT. ASSEMBLY REQUIRED)

  16. Peerless 63 Series Boilers - NG
    Gas, Steam
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/a/packaged_1_1.png
    Packaged
    Peerless 63003 63-03L 63™ Series 88 Input MBtu, 9.3 Gallon, 83% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent
    Retail : $5,241.00 $3,930.75
    You Save (25%)

    • Peerless 63003 63-03L 63â„¢ Series 88 Input MBtu, 9.3 Gallon, 83% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent

    • Peerless 63011 63-03 63â„¢ Series 118 Input MBtu, 9.3 Gallon, 83% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent, PACKAGED

    • Peerless 63035 63-05L 63â„¢ Series 206 Input MBtu, 12.4 Gallon, 82% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent

    • Peerless 63043 63-05 63â„¢ Series 236 Input MBtu, 12.4 Gallon, 82% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent

    • Peerless 63219 63-04L 63â„¢ Series 147 Input MBtu, 9.3 Gallon, 82.6% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent

    • Peerless 63227 63-04 63â„¢ Series 177 Input MBtu, 10.8 Gallon, 82% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent
Page
per page

Shop By
Now Shopping by
  1. System Type Steam Remove This Item
Clear All
Shopping Options
Category
  1. Residential Boilers 21 items
  2. Commercial Boilers 16 items
  3. Natural Gas Boilers 146 items
  4. Oil Boilers 46 items
  5. Electric Boiler 3 items
  6. Water Boilers 4 items
  7. Steam Boilers 198 items
Availability
System Type
Product Group Name
Burner
Coil
Discount% Range
Manufacturer
BTU Input Range
Fuel Type
Series
Price
OK

By using this site you agree to our Terms, Conditions of Use and Privacy Statement © 2025 AF Supply Corp. All Rights Reserved.