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 145-180 of 762

Set Descending Direction

  1. Peerless 63 Series Boilers - NG
    Natural Gas
    Chimney Vent
    Peerless 63227 63-04 63™ Series 177 Input MBtu, 10.8 Gallon, 82% AFUE, Spark Ignition Residential, Natural Gas, Boiler, Chimney Vent
    Retail : $6,303.00 $4,727.25
    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

  11. Utica Electric AT Boilers – 4 Elements
    Electric
    20 Years Warranty
    Utica AT204510C AT Series 68 Output MBtu 20 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler
    Retail : $3,273.00 $2,289.79
    You Save (30%)

    • Utica AT124310C10 AT Series 41 Output MBtu 12 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler

    • Utica AT164410C AT Series 54 Output MBtu 16 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler

    • Utica AT204510C AT Series 68 Output MBtu 20 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler

    • Utica AT244610C AT Series 82 Output MBtu 24 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler

    • Utica AT280010C10 AT Series 95 Output MBtu 28 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler

    • Utica AT320010C AT Series 109 Output MBtu 32 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler

    • Utica AT400010C AT Series 136 Output MBtu 40 Killo Watt, 240 Voltage 4-Element Wall Mounted Electric Boiler

  12. Lochinvar Knight Fire Tube Series Boilers (Wall Mount)
    Gas, Water
    Stainless Steel Heat Exchanger
    95% Efficiency
    Lochinvar WHB199N KNIGHT Fire Tube 199 Input MBtu - 95% AFUE - Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent
    Retail : $8,559.00 $6,402.13
    You Save (25%)

    • Lochinvar WHB055N Knight Fire Tube 55 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent

    • Lochinvar WHB085N Knight Fire Tube 85 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent

    • Lochinvar WHB110N Knight Fire Tube 110 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent

    • Lochinvar WHB155N Knight Fire Tube 155 Input MBtu - 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent

    • Lochinvar WHB199N KNIGHT Fire Tube 199 Input MBtu - 95% AFUE - Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent

    • Lochinvar WHB285N Knight Fire Tube 285 Input MBtu 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent

    • Lochinvar WHB399N Knight Fire Tube 399 Input MBtu 95% AFUE Residential Condensing Natural Gas Water Boiler - Wall Mount - Direct Vent

  19. Burnham Steammax Series Residential Boilers
    Gas, Steam
    Cast Iron Heat Exchanger
    Chimney Vent
    82% Efficiency
    Knockdown
    Burnham STMX399N-RH-KS, SteamMax, 399 Input MBtu, 82.5% AFUE, Hydrolevel, Residential Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Split block (8-12 sec.)(Knockdown)
    Retail : $10,505.00 $8,199.15
    You Save (22%)

    • Burnham STMX299N-RH-KA, SteamMax, 299 Input MBtu, 82% AFUE, Hydrolevel, Residential Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Assembled (3-7 sec.)(Knockdown)

    • Burnham STMX350N-RH-KS, SteamMax, 350 Input MBtu, 82.5% AFUE, Hydrolevel, Residential Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Split block (8-12 sec.)(Knockdown)

    • Burnham STMX399N-RH-KS, SteamMax, 399 Input MBtu, 82.5% AFUE, Hydrolevel, Residential Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Split block (8-12 sec.)(Knockdown)

    • Burnham STMX450N-RH-KS, SteamMax, 450 Input MBtu, 82.5% AFUE, Hydrolevel Residential, Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Split block (8-12 sec.)(Knockdown)

    • Burnham STMX500N-RH-KS, SteamMax, 500 Input MBtu, 82.5% AFUE, Hydrolevel Residential, Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Split block (8-12 sec.)(Knockdown)

    • Burnham STMX550N-RH-KS, SteamMax, 550 Input MBtu, 82.5% AFUE, Hydrolevel Residential, Natural Gas Steam Boiler, Chimney Vent, 10 Year Warranty, Split block (8-12 sec.)(Knockdown)

  23. Burnham ES2A,B Series Boilers
    Gas, Water
    Cast Iron Heat Exchanger
    Chimney Vent
    85% Efficiency
    https://www.afsupply.com/media/attribute/swatch/swatch_thumb/110x90/p/u/pump_1.png
    With Pump
    Burnham ES28BNI-G, ES2, 245 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)
    Retail : $6,909.00 $5,250.84
    You Save (24%)

    • Burnham ES23BNI-G, ES2, 70 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)

    • Burnham ES24BNI-G, ES2, 105 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)

    • Burnham ES25BNI-G, ES2, 140 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)

    • Burnham ES26BNI-G, ES2, 175 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)

    • Burnham ES27BNI-G, ES2, 210 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)

    • Burnham ES28BNI-G, ES2, 245 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)

    • Burnham ES29BNI-G, ES2, 280 Input MBtu, 85% AFUE, Electronic Ignition, Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Grundfos Alpha Pump(Altitude up to 10,000 feet)
Page
per page

Shop By
Shopping Options
Category
  1. Residential Boilers 115 items
  2. Commercial Boilers 48 items
  3. Natural Gas Boilers 576 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.