Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

  • 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

Weil-McLain SGO-6 245 Input MBtu 85% AFUE Steam Oil Boiler, Chimney Vent, Less Burner

SKU
386701003

In Stock. Ships in 1-7 Business Days.

Click Here for Shipping Cost by Destination
Retail : $5,992.00 - $1258.32 =
$4,733.68 You Save (21%)
245,000
Weil-McLain SGO-3 133 Input MBtu 85% AFUE Cast Iron Oil-Fired Steam Boiler with Tankless Heater Option Series 4 - Chimney Vent (Burner Sold Separately)
Weil-McLain SGO-4 168 Input MBtu 85% AFUE Cast Iron Oil-Fired Steam Boiler with Tankless Heater Option Series 4 - Chimney Vent (Burner Sold Separately)
Weil-McLain SGO-5 203 Input MBtu 85% AFUE Cast Iron Oil-Fired Steam Boiler with Tankless Heater Option Series 4 - Chimney Vent (Burner Sold Separately)
Selected
Weil-McLain SGO-6 245 Input MBtu 85% AFUE Steam Oil Boiler, Chimney Vent, Less Burner
- +
158,000
Weil-Mclain 386-701-000 SGO-3 133 Input MBtu 85% AFUE Cast Iron Oil-Fired Steam Boiler with Tankless Heater Option Series 4 - Chimney Vent (Burner Sold Separately)
Selected
Weil-McLain 386701003 SGO-6 158 Input MBtu 85% AFUE Steam Oil Boiler, Chimney Vent, Less Burner
Weil-Mclain 386-701-001 SGO-4 168 Input MBtu 85% AFUE Cast Iron Oil-Fired Steam Boiler with Tankless Heater Option Series 4 - Chimney Vent (Burner Sold Separately)
Weil-Mclain 386-701-002 SGO-5 203 Input MBtu 85% AFUE Cast Iron Oil-Fired Steam Boiler with Tankless Heater Option Series 4 - Chimney Vent (Burner Sold Separately)
main product photo

Product details

Weil-McLain SGO-6 245 Input MBtu 85% AFUE Steam Oil Boiler, Chimney Vent, Less Burner

Over the last 130 years, Weil-McLain has built a reputation of designing some of the most reliable boilers in the marketplace. Their dedication to producing lasting heating solutions is seen in every boiler they make. The SGO is a flexible, durable, oil-fired heating solution for steam systems. Efficient energy use is a high point of the SGO's design, allowing you to make the most of your energy dollar. Weil-McLain knows the value of longevity, that's why they used cast-iron for SGO boiler sections. Between the high efficiency, durable construction, and flexibility the SGO excels both as a replacement boiler and as an addition to new construction.

Features

  • Inspecting and maintaining a SGO is incredibly simple. Between the swing-away burner door and the quick-open top panel, the SGO is always accessible. Weil-McLain uses a recessed target wall design to protect the unit from flue brushes during cleaning.

  • Silicone-coated fiber ropes are used for sealing the boiler sections. These seals expand and contract with the boiler, keeping the unit watertight and preventing contaminants from entering your system.

  • SGO boilers have two vent connections, one on the rear and one on the top. By providing an alternate venting set up, Weil-McLain has ensured that the WGO is suited for a variety of installation conditions.

  • Heat retention is critical to energy efficiency. Heat leakage represents energy use without any comfort gains. An extended, insulated steel jacket prevents heat from escaping the SGO and improves the efficiency.

SGO CAST IRON OIL BOILER

blanco/SGO

BOILER

  • Factory tested and assembled cast iron section assembly (jacket and collector hood are not assembled on 7, 8 and 9 section blocks)
  • Insulated steel jacket
  • Aluminized steel flue collector hood with flue cap on top outlet (convertible to rear outlet)
  • Swing-away burner mounting door
  • Refractory blanket and target wall in combustion area
  • Tankless heater opening cover plate
  • Electrical junction box with wiring harnesses
  • Junction box cover plate with service switch
  • Two vent pipe brackets
  • Drain valve
  • Barometric damper
  • Oil vent damper
  • High limit pressure control
  • Low water cutoff; Packaged units only (float or probe type)
  • 15 PSI ASME relief valve
  • Steam pressure gauge
  • Siphon
  • Gauge glass, cocks and guard

OPTIONAL EQUIPMENT:

  • High-efficiency flame-retention Oil Burner (Beckett AFG, Carlin EZ or Riello). Specify 2-stage fuel unit (optional, Beckett) if required.
  • Tankless heaters and controls
  • Low water cutoffs (float or probe type)
  • Weil-McLain five- and ten-year homeowner protection plan
  • Weil-McLain indirect-fired water heaters

LIMITED TRANSFERABLE WARRANTY:

  • Residential: 10 Years Heat Exchanger; 2 Years Parts
  • Commercial: 10 Years Heat Exchanger; 1 Year Parts
Weil-McLain
See All Weil-McLain Products

Specification Sheet

Product Specifications Installation Manual Warranty Sheet Owners Manual
Basic Information
MPN ? Manufacturer Part Number 386-701-003
UPC / GTIN 672619219458
Manufacturer Weil-McLain
Dimensions and Measurements
Weight ? Weight 920.00
BTU Input 245,000
AFUE 85%
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. 35 5/8"
Width (Inches) ? The horizontal measurement from left to right, measured in inches. 20 1/4"
Depth (Inches) ? Depth 26 1/4"
Characteristics and Features
Material ? The material(s) used in the construction of the product. Cast Iron
Fuel Type Oil-Fired
Venting Chimney Vent
Installation Type ? The intended configuration for the product installed application is determined by the manufacturer. Floor Mounted
More Like This
More from Weil-McLain
  1. Weil-McLain 383900176 ECO Tec 80-H 80 Input MBtu 95% AFUE Natural Gas Condensing Heat Only Water Boiler Series 2 - Direct Vent
    Weil-McLain 383900176 ECO Tec 80-H 80 Input MBtu 95% AFUE Natural Gas Condensing Heat Only Water Boiler Series 2 - Direct Vent
    Retail : $4,090.00 - $858.9 =
    $3,231.10 You Save (21%)
    Add to Compare
  2. Weil-McLain 383900179 ECO Tec 199-H 199 Input MBtu 95% AFUE Natural Gas Condensing Heat Only Water Boiler Series 2 - Direct Vent
    Weil-McLain 383900179 ECO Tec 199-H 199 Input MBtu 95% AFUE Natural Gas Condensing Heat Only Water Boiler Series 2 - Direct Vent
    Retail : $5,287.00 - $1110.27 =
    $4,176.73 You Save (21%)
    Add to Compare
  3. Weil-McLain 383900173 ECO Tec 110-C 100 Input MBtu 95% AFUE Natural Gas Condensing Combi Water Boiler Series 2 - Direct Vent
    Weil-McLain 383900173 ECO Tec 110-C 100 Input MBtu 95% AFUE Natural Gas Condensing Combi Water Boiler Series 2 - Direct Vent
    Retail : $4,589.00 - $963.69 =
    $3,625.31 You Save (21%)
    Add to Compare
  4. Weil-McLain 383900006 Evergreen Pro EVG 155 155 Input MBtu 95% AFUE Natural Gas Condensing Water Boiler - Direct Vent
    Weil-McLain 383900006 Evergreen Pro EVG 155 155 Input MBtu 95% AFUE Natural Gas Condensing Water Boiler - Direct Vent
    Retail : $5,848.00 - $1228.08 =
    $4,619.92 You Save (21%)
    Add to Compare
Document

Click Here to Explore All Boilers

Related Categories

Boilers

Boiler Parts

Burners

Boiler Components

Tankless Coils

Furnaces


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