Buderus 112K BTU 85.0% AFUE Hot Water Gas Boiler Chimney Vent GC144/5

Model: 7738503409 Item Number: 37571
Buderus 7738503409
Buderus 7738503409
Enlarge Image
Our Price: $3,569.00
synchrony card icon
$63 / Month
With our 86 months 11.99% APR*
86 fixed monthly payments required.
Ships in 4-7 Business Days
Buderus 112K BTU 85.0% AFUE Hot Water Gas Boiler Chimney Vent GC144/5
Buderus 112K BTU 85.0% AFUE Hot Water Gas Boiler Chimney Vent GC144/5 Model: 7738503409 Item Number: 37571
Product Q&A
Shipping Crate Icon
Free Shipping Learn More
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.
Truck Icon
Free Lift Gate Learn More
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.
    349.5 Pounds Learn More
    349.5 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
View More
Required Accessories Add All Required
Installation Accessories
View More


Overview for Buderus 7738503409

The GC144/5 gas fired boiler is purpose built for boiler replacement applications. It was built from the ground up to ensure compatability with older homes while still providing the higher efficiencies and safety features we have come to expect from boilers today. An AFUE of 85% places the GC144 head and shoulders above most older conventional boilers, and you will be able to immediately tell the difference after installation when your fuel bill comes in the mail. The included AquaSmart control and pressure relief valve bring your boiler up to modern safety standards, providing increased safety for your entire family.
  • Included AquaSmart Control
  • The AquaSmart control included with the GC144 series of boilers acts as the brain for your home's heating system, allowing it to react to both outdoor temperatures and increased heat demand within your home.
  • Patented Flexible Cast Iron
  • Buderus manufactures the GC144 with their patented GL-180M cast iron, an alloy developed specifically for home heating applications. The alloy is more corrosion resistant and flexible than other alloys, allowing it to respond to rapid temperature changes.
  • Ideal Replacement Boiler
  • The GC144 was engineered to be compatible with older hydronic heating systems with as few modifications as possible. This translates into an easier to install boiler requiring less contractor work, which leads to reduced installation costs.
  • Specifications
    View More


    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.
    Natural Gas
    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
    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.
    Mount Type
    Minimum Altitude
    0 Feet
    Maximum Altitude
    8500 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.
    85 %
    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.
    132500 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.
    112000 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.
    97000 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.
    Electrical Data
    120 Volts
    60 Hz
    Gas Connection Size
    1/2 Inch
    Flue Connection Size
    6 Inches
    Supply Connection
    1 1/4 Inches
    Return Connection
    1 1/4 Inches
    Product Height
    34 3/8 Inches
    Product Width
    21 1/2 Inches
    Product Depth
    20 3/8 Inches
    Product Weight
    349.5 Pounds
    CSA Listed
    ASME Certified
    AHRI Certified
    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
    5 Years
    Heat Exchanger Warranty
    Lifetime Years
    View More


    Do You Own This Product?

    Give us your opinion on this product and help any future buyer's make an informed decision.

    Product Q&A
    View More

    Product Q&A

    Be the first to ask a question.

    Whether it's a general or technical question ACWholesalers can help. Our customer service team is backed by years of experience so you can have confidence knowing that you'll be getting an insightful response.

    View More
    Buderus 112K BTU 85.0% AFUE Hot Water Gas Boiler Chimney Vent GC144/5
    Buderus 7738503409
    Customer Review Images
    Scroll Up ArrowTo Top