Weil-McLain 71K BTU 93.5% AFUE Hot Water Propane Boiler Direct Vent

Model: 383500733 Item Number: 79375
Weil-McLain 383500733
Weil-McLain 383500733
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Weil-McLain 71K BTU 93.5% AFUE Hot Water Propane Boiler Direct Vent
Weil-McLain 71K BTU 93.5% AFUE Hot Water Propane Boiler Direct Vent Model: 383500733 Item Number: 79375
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Free Shipping
*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.
    199 Pounds Learn More
    199 Pounds
    Total weight of the product and any included accessory/components. This total is not the shipping weight, as it does not include packing material, which may increase the overall shipping weight of this product.
    Product Category
Recommended Accessories
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Overview for Weil-McLain 383500733

Overview for Weil-McLain 383500733Over 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 long-lasting heating solutions is seen in every boiler they make. Weil-McLain's Ultra hot water boiler is highly efficient, simple to install, and remarkably durable. The Ultra is a brilliant addition to any hydronic heating system, and the low profile means that it is easy to fit into even the smallest of spaces. Using condensing technology, the Ultra will reuse heat that escapes from conventional boilers, providing greater efficiency. Equipped with Weil-McLain's proprietary U-Control system, the Ultra is a very user-friendly boiler. Clear display screens relay information about operations, temperatures, and even the maintenance schedule and your contractor's contact information. With U-Control and a 93.5% AFUE, the Ultra 80 makes comfort and efficiency more accessible than ever before.
  • Nano-Coated Heat Exchanger
  • With a nano-coated heat exchanger, the Ultra boilers won't need cleaning for 5 years after installation. When it comes time to clean, simply rinse the exchanger with water and replace.
  • Outdoor Reset Control
  • An outdoor reset sensor is included with every Ultra boiler. This sensor, when paired with the U-Control system, allows your boiler temperature to be adjusted relative to the temperature outside, eliminating excess energy use and guaranteeing comfort.
  • Clean, Efficient Burner
  • The Ultra 80 has a stainless steel, modulating burner. Modulating burners scale heat production to your boiler's demand, further improving energy efficiency. A venturi mixing body combines gas and air prior to ignition for low NOx operations.
  • U-Control
  • Weil-McLain's U-Control makes it simple to set up even the most complex applications. Preset system configurations may be used right out of the box or customized to your liking. Multiple boilers can be staged together through the U-Control as well.
  • Advanced Condensate Management
  • The Ultra 80 incorporates polypropylene piping and nanotechnology coating, preventing condensate build-up and damage caused by acidic condensate penetration.
  • Easy Installation
  • Weil-McLain has included piping at the top and base of the unit to provide flexibility in how you install the Ultra. All electrical components come pre-wired, color-coded, and connected to the U-Control.
  • 5-Year Protection Plan*
  • This free protection plan covers parts and labor for any defective electronic or mechanical part furnished by Weil-McLain for up to five years from the installation date of your Ultra boiler.
  • Product Includes:
  • (1) Weil-McLain Ultra 80 Hot Water Boiler
  • (1) Taco 007 Circulator
  • (1) Outdoor Temperature Sensor
  • Product Note
    * To qualify for the 5-Year Protection Plan, registration must be completed within 30 days of your boiler installation. Please visit Weil-McLain's website at https://www.weil-mclain.com/product-registration for more details.
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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
    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.
    Liquid Propane
    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.
    Direct Vent
    DHW Production Learn More
    DHW Production
    DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
    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
    Minimum Altitude
    0 Feet
    Maximum Altitude
    5500 Feet
    Includes Pump
    Assembly Type
    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.
    93 %
    Maximum Input Capacity Learn More
    Maximum Input Capacity
    The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
    80000 BTU
    Minimum Input Capacity
    16000 BTU
    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.
    71000 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.
    62000 BTU
    Ultra Low NOx Emissions Learn More
    Ultra Low NOx Emissions
    NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx.
    Turndown Ratio
    Electrical Data
    60 Hz
    Secondary Vent Pipe Diameter
    3 Inches
    Gas Connection Size
    1/2 Inch
    Flue Connection Size
    2 Inches
    Supply Connection
    1 Inch
    Return Connection
    1 Inch
    Product Height
    43 1/16 Inches
    Product Width
    22 13/16 Inches
    Product Depth
    19 15/16 Inches
    Product Weight
    199 Pounds
    Shipping Weight
    199 Pounds
    Energy Star Listed
    CSA 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
    12 Years
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    Weil-McLain 71K BTU 93.5% AFUE Hot Water Propane Boiler Direct Vent
    Weil-McLain 383500733
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