Weil-McLain Ultra Oil - 173K BTU - 87% AFUE - Hot Water Oil Boiler - - Burner Sold Separately

Model: 386901008 Item Number: 116943
Weil-McLain 386901008
Weil-McLain 386901008
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Weil-McLain Ultra Oil - 173K BTU - 87% AFUE - Hot Water Oil Boiler -  - Burner Sold Separately
Weil-McLain Ultra Oil - 173K BTU - 87% AFUE - Hot Water Oil Boiler - - Burner Sold Separately Model: 386901008 Item Number: 116943
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*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Specification Highlights
    New Learn More
    This product is new and has never been used. It's in its original packaging, which has not been opened.
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Overview for Weil-McLain 386901008

Over the last 130 years, Weil-McLain has built a reputation of designing some of the most reliable boilers in the marketplace. Weil-McLain's Ultra hot water boiler is highly efficient, simple to install, and remarkably durable. Using condensing technology, the Ultra will reuse heat that escapes from conventional boilers, providing greater efficiency. When equipped with the optional Weil-McLain Advanced Features Module (AFM), the Ultra is a very user-friendly boiler. A clear display screen relays information about operations, temperatures, and system status. With AFM and an 87% AFUE, the Ultra UO-3 makes comfort and efficiency more accessible than ever before.
  • Modern Appearance
  • The Weil-McLain Ultra Oil has appliance-like design features that allow placement in high traffic living spaces as well as providing easy serviceability.
  • Swing-Away Door
  • Featuring a full access, reversible swing-away door, the Ultra Oil provides simplified inspection, cleaning and maintenance.
  • Three Pass Design
  • The three pass design, used by Weil-McLain for over 70 years, provides better flame control and efficient fuel utilization.
  • Concealed Controls
  • The Ultra Oil, with it's top mounted hinged control POD, includes a factory installed external service switch and temperature and pressure gauge for easy viewing.
  • Venting Flexibility
  • The Weil-McLain Ultra Oil can be vented to an existing chimney or direct vented using the pre-packaged termination and combustion air kit.
  • Specifications
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    Product Category
    General Information
    Product Line
    Product Category
    Medium Learn More
    Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
    Hot Water
    Heat Exchanger Material
    Cast Iron
    Fuel Type Learn More
    Fuel Type
    To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
    Combustion Type Learn More
    Combustion Type
    Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
    Vent Type Learn More
    Vent Type
    Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
    Chimney Vent
    Modulating/Staging Learn More
    Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control.
    Mount Type
    Assembly Type
    Includes Pump
    Burner Model
    Sold Separately
    AFUE Learn More
    AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace.
    87 %
    Input Rate
    1.4 GPH
    DOE Heating Capacity Learn More
    DOE Heating Capacity
    Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.
    173000 BTU
    Net I=B=R Capacity Learn More
    Net I=B=R Capacity
    I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.
    150000 BTU
    Electrical Data
    60 Hz
    Flue Connection Size
    6 Inches
    Supply Connection
    1 1/2 Inches
    Return Connection
    1 1/2 Inches
    Product Height
    40 Inches
    Product Width
    22 1/16 Inches
    Product Depth
    33 Inches
    Shipping Width
    23 Inches
    Shipping Height
    39 Inches
    Shipping Depth
    27 Inches
    Shipping Weight
    852 Pounds
    CSA Listed
    Energy Star Listed
    ASME Certified
    AHRI Certified
    AHRI Reference Number
    Warranty Information
    Parts Warranty Show ACW Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
    2 Years
    Heat Exchanger Warranty
    20 Years
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    Weil-McLain Ultra Oil - 173K BTU - 87% AFUE - Hot Water Oil Boiler - - Burner Sold Separately
    Weil-McLain 386901008
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