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

Mbtu

Fuel Type

Medium

Brands



Items 289-324 of 763

Set Descending Direction

  1. Williamson GWA Gas Water Boilers
    Gas, Water
    Cast Iron Heat Exchanger
    Chimney Vent
    84% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/a/packaged_1_1.png
    Packaged
    Williamson GWA-067-N-T-S3-W GWA Series 3, 67 Input MBtu, 84% AFUE Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO
    Retail : $3,240.00 $1,846.42
    You Save (43%)

    • Williamson GWA-038-N-T-S3-W GWA Series 3, 38 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-067-N-T-S3-W GWA Series 3, 67 Input MBtu, 84% AFUE Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-100-N-T-S3-W GWA Series 3, 100 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-133-N-T-S3-W GWA Series 3, 133 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-166-N-T-S3-W GWA Series 3, 166 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-200-N-T-S3-W GWA Series 3, 200 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-233-N-T-S3-W GWA Series 3 233 Input MBtu 84% AFUE Natural Gas Atmospheric Vent, Package Water Boiler, Taco 007, LWCO, Draft Hood Included

  2. Williamson GWA Water Boilers
    Gas, Water
    Cast Iron Heat Exchanger
    Chimney Vent
    84% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/a/packaged_1_1.png
    Packaged
    Williamson GWA-133-N-T-S3-W GWA Series 3, 133 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO
    Retail : $4,080.00 $2,325.57
    You Save (43%)

    • Williamson GWA-038-N-T-S3-W GWA Series 3, 38 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-067-N-T-S3-W GWA Series 3, 67 Input MBtu, 84% AFUE Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-100-N-T-S3-W GWA Series 3, 100 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-133-N-T-S3-W GWA Series 3, 133 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-166-N-T-S3-W GWA Series 3, 166 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-200-N-T-S3-W GWA Series 3, 200 Input MBtu, 84% AFUE, Natural Gas, Atmospheric Vent, Water Boiler, Taco 007, LWCO

    • Williamson GWA-233-N-T-S3-W GWA Series 3 233 Input MBtu 84% AFUE Natural Gas Atmospheric Vent, Package Water Boiler, Taco 007, LWCO, Draft Hood Included

  3. Williamson GSA Series 2 Steam Boilers
    Gas, Steam
    Chimney Vent
    82% Efficiency
    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
    Retail : $7,976.00 $4,945.12
    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

  4. Williamson GWI Series 2 Water Boiler
    Gas, Water
    Cast Iron Heat Exchanger
    Direct Vent
    84% Efficiency
    Williamson GWI-090-N-T-S3-W GWI Series 3 High Efficiency 90,000 BTU 84% AFUE Natural Gas Direct Vent Water Boiler, Taco 007, LWCO
    Retail : $4,062.00 $2,812.93
    You Save (31%)

    • Williamson GWI-048-N-T-S3-W GWI Series 3 High Efficiency 48,000 BTU 84% AFUE Natural Gas Direct Vent Water Boiler

    • Williamson GWI-058-N-T-S3-W GWI Series 3 High Efficiency 58,000 BTU 84% AFUE Natural Gas Direct Vent Water Boiler

    • Williamson GWI-090-N-T-S3-W GWI Series 3 High Efficiency 90,000 BTU 84% AFUE Natural Gas Direct Vent Water Boiler, Taco 007, LWCO

    • Williamson GWI-119-N-T-S3-W GWI Series 3 High Efficiency 119,000 BTU 84% AFUE Natural Gas Direct Vent Water Boiler, Taco 007, LWCO

    • Williamson GWI-158-N-T-S3-W GWI Series 3 High Efficiency 158,000 BTU 84% AFUE Natural Gas Direct Vent Water Boiler, Intermittent Pilot, Taco 007

    • Williamson GWI-190-N-T-S3-W GWI Series 3 High Efficiency 190,000 BTU 84% AFUE Natural Gas Direct Vent Water Boiler, Intermittent Pilot, Taco 007

  5. Weil-McLain WTGO Series 4 Oil-Fired Water Boilers
    Oil-Fired, Water
    Cast Iron Heat Exchanger
    Chimney Vent
    86.1% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/w/i/withoutburner.png
    Without Burner
    Weil-Mclain 386-701-031 WTGO-6R 196 Input MBtu 86.1% AFUE Cast Iron Oil-Fired Water Boiler with T-007 Circulator Series 4 - Chimney Vent (Burner Sold Separately)
    Retail : $6,399.00 $5,055.21
    You Save (21%)

    • Weil-Mclain 386-701-028 WTGO-3L 98 Input MBtu 86.4% AFUE Cast Iron Oil-Fired Water Boiler with T-007e Circulator Series 4 - Chimney Vent (Burner Sold Separately)

    • Weil-Mclain 386-701-027 WTGO-3R 112 Input MBtu 86.2% AFUE Cast Iron Oil-Fired Water Boiler with T-007e Circulator Series 4 - Chimney Vent (Burner Sold Separately)

    • Weil-Mclain 386-701-029 WTGO-4R 140 Input MBtu 86.2% AFUE Cast Iron Oil-Fired Water Boiler with T-007e Circulator Series 4 - Chimney Vent (Burner Sold Separately)

    • Weil-Mclain 386-701-030 WTGO-5R 168 Input MBtu 86.1% AFUE Cast Iron Oil-Fired Water Boiler with T-007 Circulator Series 4 - Chimney Vent (Burner Sold Separately)

    • Weil-Mclain 386-701-031 WTGO-6R 196 Input MBtu 86.1% AFUE Cast Iron Oil-Fired Water Boiler with T-007 Circulator Series 4 - Chimney Vent (Burner Sold Separately)

  6. Weil-McLain WGO Series 4 Oil-Fired Water Boilers
    Oil-Fired, Water
    Cast Iron Heat Exchanger
    Chimney Vent
    86.1% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/w/i/withoutburner.png
    Without Burner
    Weil-McLain 386-701-016 WGO-6R 196 Input MBtu 86.1% AFUE Cast Iron Oil-Fired Water Boiler with T-007 Circulator Series 4 - Chimney Vent (Burner Sold Separately)
    Retail : $5,770.00 $4,558.30
    You Save (21%)

    • Weil-McLain 386-701-012 WGO-2 98 Input MBtu 86.4% AFUE Cast Iron Oil-Fired Water Boiler w/ T-007E Circulator Series 4 - Chimney Vent (Burner Sold Separately) Packaged

    • Weil-McLain 386-701-013 WGO-3R 112 Input MBtu 86.2% AFUE Cast Iron Oil-Fired Water Boiler with T-007E Circulator Series 4 - Chimney Vent (Burner Sold Separately)

    • Weil-McLain 386-701-014 WGO-4R 140 Input MBtu 86.2% AFUE Cast Iron Oil-Fired Water Boiler with T-007E Circulator Series 4 - Chimney Vent (Burner Sold Separately)

    • Weil-McLain 386-701-015 WGO-5R 168 Input MBtu 86.1% AFUE Cast Iron Oil-Fired Water Boiler with T-007 Circulator Series 4 - Chimney Vent (Burner Sold Separately)

    • Weil-McLain 386-701-016 WGO-6R 196 Input MBtu 86.1% AFUE Cast Iron Oil-Fired Water Boiler with T-007 Circulator Series 4 - Chimney Vent (Burner Sold Separately)

  9. Weil-McLain CGa Gas Boilers Series 3
    Gas, Water
    Cast Iron Heat Exchanger
    Atmospheric Vent
    84% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/u/pump_1.png
    With Pump
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/a/packaged_1_1.png
    Packaged
    Weil-Mclain 381359082 CGa-8 Packaged 233 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3
    Retail : $5,864.00 $4,456.64
    You Save (24%)

    • Weil-Mclain 381359070 CGa-25 Packaged 38 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3

    • Weil-Mclain 381359072 CGa-3 Packaged 67 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3

    • Weil-Mclain 381359074 CGa-4 Packaged 100 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3

    • Weil-Mclain 381359076 CGa-5 Packaged 133 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3

    • Weil-Mclain 381359078 CGa-6 Packaged 166 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3

    • Weil-Mclain 381359080 CGa-7 Packaged 200 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3

    • Weil-Mclain 381359082 CGa-8 Packaged 233 Input MBtu, 84% AFUE, Atmospheric Natural Gas Water Boiler with Taco 007e Circulating Pump, Series 3

  10. Weil-McLain CGi Gas Boilers Series 4
    Gas, Water
    Cast Iron Heat Exchanger
    Induced Draft
    84% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/u/pump_1.png
    With Pump
    Weil-Mclain 381-359-008 CGI-6 158 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007 Pump
    Retail : $5,375.00 $4,085.00
    You Save (24%)

    • Weil-Mclain 381-359-000 CGI-25 48 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007E Pump

    • Weil-Mclain 381-359-002 CGI-3 58 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007E Pump

    • Weil-Mclain 381-359-004 CGI-4 90 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007E Pump

    • Weil-Mclain 381-359-006 CGI-5 119 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007E Pump

    • Weil-Mclain 381-359-008 CGI-6 158 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007 Pump

    • Weil-Mclain 381-359-010 CGI-7 190 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007 Pump

    • Weil-Mclain 381-359-012 CGI-8 222 Input MBtu 84% AFUE Cast Iron Natural Gas Water Boiler Series 4 with Taco T-007 Pump

  11. Weil-McLain EG-55 Gas Boilers Series 6
    Gas, Steam
    Cast Iron Heat Exchanger
    Chimney Vent
    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 118-755-501 EG-75 282 Input MBtu 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)
    Retail : $8,459.00 $6,682.61
    You Save (21%)

    • Weil-Mclain 118355501 EG-35 100 MBtu Input 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118405501 EG-40 125 MBtu Input 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118455501 EG-45 150 MBtu Input 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118505501 EG-50 175 MBtu Input 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118-555-501 EG-55 200 Input MBtu 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118-655-501 EG-65 238 Input MBtu 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening(Knockdown – Assembly Required)

    • Weil-Mclain 118-755-501 EG-75 282 Input MBtu 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

  12. Weil-McLain EG-45 Gas Boilers Series 6
    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 118-754-501 EG-75 282 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown – Assembly Required, No Tankless Coil Opening)
    Retail : $7,909.00 $6,248.11
    You Save (21%)

    • Weil-Mclain 118304501 EG-30 75 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118354501 EG-35 100 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118404501 EG-40 125 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain EG-45 118454501, 150 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118504501 EG-50 175 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118-554-501 EG-55 200 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown – Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118-654-501 EG-65 238 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown – Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118-754-501 EG-75 282 Input MBtu 82% AFUE Natural Gas Steam Boiler (Knockdown – Assembly Required, No Tankless Coil Opening)

  13. Weil-McLain EG Boilers Series 6 (with Coil Opening)
    Gas, Water
    Cast Iron Heat Exchanger
    Chimney Vent
    84% 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 118-752-500 EG-75 282 Input MBtu 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening (Knockdown – Assembly Required)
    Retail : $8,206.00 $6,482.74
    You Save (21%)

    • Weil-Mclain 118352500 EG-35 100 MBtu Input 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118402500 EG-40 125 MBtu Input 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118452500 EG-45 150 MBtu Input 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118502500 EG-50 175 MBtu Input 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118-552-500 EG-55 200 Input MBtu 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

    • Weil-Mclain 118-652-500 EG-65 238 Input MBtu 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening(Knockdown – Assembly Required)

    • Weil-Mclain 118-752-500 EG-75 282 Input MBtu 84% AFUE Natural Gas Water Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

  14. Weil-McLain EG Boilers Series 6 (No Coil Opening)
    Gas, Water
    Cast Iron Heat Exchanger
    Chimney Vent
    84% 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 118-751-500 EG-75 282 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown – Assembly Required, No Tankless Coil Opening )
    Retail : $7,470.00 $5,901.30
    You Save (21%)

    • Weil-Mclain 118301500 EG-30 75 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118351500 EG-35 100 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118401500 EG-40 125 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118451500 EG-45 150 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118501500 EG-50 175 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown - Assembly Required, No Tankless Coil Opening)

    • Weil-Mclain 118-551-500 EG-55 200 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown – Assembly Required, No Tankless Coil Opening )

    • Weil-Mclain 118-651-500 EG-65 238 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown – Assembly Required, No Tankless Coil Opening )

    • Weil-Mclain 118-751-500 EG-75 282 Input MBtu 84% AFUE Natural Gas Water Boiler (Knockdown – Assembly Required, No Tankless Coil Opening )
Page
per page

Shop By
Shopping Options
Category
  1. Residential Boilers 115 items
  2. Commercial Boilers 49 items
  3. Natural Gas Boilers 577 items
  4. Propane Boilers 75 items
  5. Oil Boilers 149 items
  6. Electric Boiler 14 items
  7. Water Boilers 484 items
  8. Steam Boilers 201 items
Availability
Product Group Name
Burner
Coil
Pump
Water Heater Type for Top Filters
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.